Midea Precision Air Conditioner Technical Manual Ä Down ... · Midea Precision Air Conditioner Technical Manual Ä Down delivery series Å Midea reserves the right to discontinue,

Midea Precision AC Technical Manual-Down Delivery Series MCAC-RTSM-2013-04

0

Midea Precision Air Conditioner Technical Manual

（Down delivery series）

Midea reserves the right to discontinue, or change specification or designs at any time without

notices and without incurring obligations.

DiAmon

New Stamp

http://www.c-o-k.ru/biblio

MCAC-PDSM-2013-04 Midea Precision AC Technical Manual-Down Delivery Series

1

Content 1. GENERAL INFORMATION ................................................................... 3

1.1 MEASUREMENTS ............................................................................................................ 3

1.2 EXTERNAL APPEARANCE ................................................................................................. 4

1.3 NOMENCLATURE ............................................................................................................. 5

2. SPECIFICATION & PERFORMANCE .................................................. 6

2.1FEATURES ...................................................................................................................... 6

2.2 REFRIGERANT CIRCUIT .................................................................................................... 8

2.3 SPECIFICATIONS ........................................................................................................... 10

2.4 DIMENSION (UNIT: MM) .................................................................................................. 32

2.5 SERVICE SPACE ............................................................................................................ 36

2.6 WIRING DIAGRAM ......................................................................................................... 37

3. INSTALLATION .................................................................................. 40

3.1 STORAGE ENVIRONMENT ............................................................................................... 42

3.2 INDOOR INSTALLATION ................................................................................................... 42

3.3 INSTALLING OUTDOOR UNITS .......................................................................................... 45

3.4 CONNECTING REFRIGERANT PIPE ................................................................................... 46

3.5 VACUUM AND ADD REFRIGERANT .................................................................................... 49

3.6 WATER PIPE INSTALLATION ............................................................................................ 50

3.7 ELECTRIC CONNECTION ................................................................................................ 52

3.8 TRIAL RUN ................................................................................................................... 55

4. CONTROL SYSTEM ........................................................................... 61

4.1 TABLE OF MAIN CONTROL COMPONENTS AND CONTROL LOAD ............................................ 61

4.2 MAIN CONTROL FUNCTION ............................................................................................. 64

5. OPERATION ....................................................................................... 65

Midea Precision AC Technical Manual MCAC-PDSM-2013-01

2

5.1 TEMPERATURE/HUMIDITY SET POINT SETTING FUNCTION .................................................. 65

5.2 QUERY FUNCTION FOR KEY COMPONENTS OPERATING STATUS .......................................... 65

5.3 SETTING FUNCTION OF USING PARAMETERS .................................................................... 67

5.4 MAINTENANCE MANAGEMENT ........................................................................................ 68

5.5 CLOCK MANAGEMENT ................................................................................................... 69

6. NETWORK FUNCTION INTRODUCTION ......................................... 71

6.1 GROUP CONTROL NETWORK SETTING ............................................................................. 72

6.2 THE ETHERNET COMMUNICATION CARD INTRODUCTION .................................................... 78

7. MAINTENANCE .................................................................................. 81

7.1 ELECTRICAL MAINTENANCE ........................................................................................... 81

7.2 CONTROL MAINTENANCE ............................................................................................... 81

7.3 FILTER SCREEN MAINTENANCE ....................................................................................... 82

7.4 INDOOR FAN COMPONENTS MAINTENANCE ...................................................................... 83

7.5 HUMIDIFIER MAINTENANCE ............................................................................................ 83

7.6 ELECTRICAL HEATING COMPONENTS ............................................................................... 85

7.7 REFRIGERATION SYSTEM ............................................................................................... 85

7.8 COMPRESSOR MONITORING AND REPLACEMENT .............................................................. 86

7.9 OUTDOOR FAN MAINTENANCE ........................................................................................ 87

8. TROUBLE SHOOTING ....................................................................... 88

9. ACCESSORIES .................................................................................. 93

ANNEX I: ALARM TABLE ...................................................................... 94


3

1. General information

1.1 Measurements

Type Model Dimension

(mm, W×H×D)

Outdoor unit

(Quantity) Power Supply

20kW Indoor MAD020T1N1S1 895×1,971×870

1 380V~,3Ph,50Hz

Outdoor MA0331 1,470×988×870 380V~,3Ph,50Hz

25kW Indoor MAD025T1N1S1 895×1,971×870

1 380V~,3Ph,50Hz

Outdoor MA0431 1,470×988×870 380V~,3Ph,50Hz

30kW Indoor MAD030T1N1S1 895×1,971×870

1 380V~,3Ph,50Hz

Outdoor MA0541 1,660×1,290×870 380V~,3Ph,50Hz

35kW Indoor MAD035T1N1S1 1,400×1,971×870

1 380V~,3Ph,50Hz

Outdoor MA0601 1,660×1,290×870 380V~,3Ph,50Hz

40kW Indoor MAD040T2N1S1 1,790×1,971×870

2 380V~,3Ph,50Hz

Outdoor MA0331 1,470×988×870 380V~,3Ph,50Hz

45kW Indoor MAD045T1N1S1 1,790×1,971×870

1 380V~,3Ph,50Hz

Outdoor MA0752 1,980×1,290×870 380V~,3Ph,50Hz

50kW Indoor MAD050T2N1S1 1,790×1,971×870

2 380V~,3Ph,50Hz

Outdoor MA0431 1,470×988×870 380V~,3Ph,50Hz

60kW Indoor MAD060T2N1S1 1,790×1,971×870

2 380V~,3Ph,50Hz

Outdoor MA0541 1,660×1,290×870 380V~,3Ph,50Hz

70kW Indoor MAD070T2N1S1 2,685×1,971×870

2 380V~,3Ph,50Hz

Outdoor MA0601 1,660×1,290×870 380V~,3Ph,50Hz

80kW Indoor MAD080T2N1S1 2,685×1,971×870

2 380V~,3Ph,50Hz

Outdoor MA0752 1,980×1,290×870 380V~,3Ph,50Hz

90kW Indoor MAD090T2N1S1 2,685×1,971×870

2 380V~,3Ph,50Hz

Outdoor MA0982 2,480×1,290×870 380V~,3Ph,50Hz

Midea Precisi

4

1.2 Extern

Indoor

Indoor

Indoor

on AC Technic

nal appear

r unit-20kW,

r unit-35kW,

r unit-70kW,

cal Manual

rance

, 25kW, 30k

, 40kW, 45k

, 80kW, 90k

kW:

kW, 50kW, 6

kW:

60kW:

M

MCAC-PDSM

M-2013-01

MCAC-PDSM

Outdoo

Outdoo

1.3 Nome

Indoor un

M-2013-04

or unit-Sing

or unit-Dou

nclature

nit

gle fan moto

uble fan mo

or:

tors:

Midea

a Precision AC

Technical Maanual-Down Delivery Series

5

5

Midea Precisi

6

Outdoo

2. Speci

2.1Features

V shap

pipe.

Change

temper

Reliable

Double

from th

Copela

Adopt a

integrat

Accura

temper

on AC Technic

or unit

ification

s

pe design hi

e the valid e

rature fluctua

e electric he

e wall design

e unit body.

and, special

advantage t

ted control s

te micropro

rature & hum

cal Manual

n & perfo

igh efficient

evaporator a

ation.

eater.

n, heat-insul

high efficien

technology o

solution of h

ocessor cont

midity senso

ormance

evaporator

area by elec

ated casing

nt compresso

of immersed

umidity.

trol technolo

r, frequency

e

r with hydro

ctric valve to

g reduces th

or.

d electrode

ogy and ke

y converter, p

ophilic alumi

o reduce the

e exchange

humidifier, c

y parts: Hig

pressure se

M

num fin and

e relative hu

ed heat and

carel cleana

gh quality h

nsor.

MCAC-PDSM

d inner groo

umidity witho

prevent the

able steam c

umidity con

M-2013-01

oved coppe

out apparen

condensate

cylinder, and

ntrol module

r

nt

e

d

e,

MCAC-PDSM

Multiple

The run

100 pie

Three t

Rotary

whole y

To enh

commu

capabil

M-2013-04

e protections

nning param

eces of error

types of pas

function, st

year.

hance remo

unication car

ities as the

s: High and

meter can be

r records ca

ssword: user

tandby func

ote commun

rd (optional

requirement

low pressur

e displayed i

n be stored.

r password,

ction and joi

nications an

part) and R

ts.

Midea

re protection

n the screen

.

maintenanc

in-in functio

nd control

RS485 card

a Precision AC

n, discharge

n of the cont

ce password

on can ensu

the precisi

(optional pa

Technical Ma

temperature

trol panel.

d, factory pas

ure the units

on air con

art) can sup

anual-Down D

re protection

ssword.

s keep ope

nditioners, t

pport the com

elivery Series

7

n, etc.

rating in the

he Etherne

mmunication

7

e

et

n

Midea Precisi

8

2.2 Refrig

Single

on AC Technic

gerant circ

refrigerant

cal Manual

cuit

t circuit typ

e:

MMCAC-PDSMM-2013-01

MCAC-PDSM

Dual-re

Compr

Evapor

Indoor

Outdoo

M-2013-04

efrigerant c

ressor: R41

rator (Heat

r Fan: Centri

or Fan: Axia

circuits type

0A, scroll co

exchanger

ifugal fan

al fan

e:

ompressor.

): Copper tu

Midea

ube and alum

a Precision AC

minum fin ty

Technical Ma

pe heat exc

anual-Down D

changer.

elivery Series

9

9


10

2.3 Specifications

Indoor model MAD020T1N1S1

Outdoor model (×Quantity) MA0331 (×1)

Indoor operating ambient temperature range °C 0~40

Outdoor operating ambient temperature range °C -20~45, (-40~45, with low ambient temperature kit)

Altitude \ ≤1000m (higher than 1000m, derating use)

Indoor Power supply V, Ph, Hz 380V~,3Ph,50Hz

Outdoor Power supply V, Ph, Hz 380V~,3Ph,50Hz

Whole unit Rated input W 15,000

Whole unit Rated current A 26.8

Cooling

Total capacity W 20,200

Sensible capacity W 18,580

Input W 7,800

EER W/W 2.59

E-heater Capacity W 6,000

Humidification Capacity kg/h 5

Compressor

Model \ ZP83KCE-TFD-522

Type \ Scroll

Qty. \ 1

Brand \ Copeland

Capacity W 20,000

Input W 6,400

Rated current (RLA) A 13.6

Locked rotor Amp (LRA) A 101

Thermal protector \ Internal

Refrigerant oil ml 1,774 (POE)

Indoor fan

Model (× quantity) \ Y(2)100L1-4-2.2KW(YRZ) (×1)

Brand \ Huanqiu/Wolong

Input W 2,200

Speed r/min 1,420

Indoor coil

Number of rows \ 4

Tube pitch(a)×row pitch(b) mm 25.4×22

Fin spacing mm 1.8

Fin type \ Hydrophilic aluminum fin

Pipe size mm Ф9.52

Pipe type \ Inner grooved copper pipe

Coil(W×H) mm (726×686)+(726×686)

Number of circuits \ 9+9

Outdoor fan

Type \ Axial fan

Motor Model (× Quantity) \ FN071-SDK (×1)

Motor Brand \ Ziehl-Abegg

Motor Input W 940


11

Speed r/min 900

Outdoor coil

No. of rows \ 3


Fin spacing mm 2.2


Pipe outside dia. and type mm Ф9.52

Inner grooved copper pipe

Coil (W×D) mm 1,250×914.4

Number of circuits \ 6

Indoor air flow m3/h 6,225

Indoor external static pressure Pa 20

Indoor drain pipe I.D. mm Ф30

Indoor noise level dB(A) ≤66

Outdoor noise level dB(A) ≤64

Refrigerant

Type \ R410A

Recharged (After installation) g 7,500

Control \ Thermostatic expansion valve

Maximum refrigeration pipe pressure MPa 4.4

Refrigerant

pipe

Max. pipe length m 60

Max. difference in level (O.U. up) m 20

Max. difference in level (O.U.

down) m 5

Connection

wire

Indoor power wire mm2 3×10.0mm2（A,B,C）+2×6.0mm2（N,GND）

Outdoor power wire mm2 4×1.0mm2

Signal wire mm2 4×1.0mm2

Filter \ G4

Indoor unit Net dimension (W×H×D) mm 895×1,971×870

Net weight kg 340

Outdoor unit Net dimension (W×H×D) mm 1,470×988×690(No include supporting bar)

Net weight kg 105

Notes:

1. The nominal cooling capacity is based on the following conditions. Indoor temperature: 24°CDB, 17°CWB;

Outdoor temperature: 35°CDB, pipe length is 10 meters.

2. The noise is measured in the semi suppression lab.

3. Specifications are subject to change without prior notice for product improvement.


12









Whole unit Rated current A 30

Cooling



Input W 9,400

EER W/W 2.77



Compressor


Type \ Scroll

Qty. \ 1

Brand \ Copeland

Capacity W 25,200

Input W 7,800





Indoor fan

Model (× quantity) \ Y(2)100L2-4-3KW(YRZ) (×1)


Input W 3,000

Speed r/min 1,420

Indoor coil

Number of rows \ 4


Fin spacing mm 1.8


Pipe size mm Ф9.52


Coil(W×H) mm (726×686)+(726×686)


Outdoor fan

Type \ Axial fan

Motor Model (× Quantity) \ FN080-ADK (×1)


Motor Input W 1,100

Speed r/min 680

Outdoor coil No. of rows \ 3


13


Fin spacing mm 2.2




Coil (W×D) mm 1,250×914.4







Refrigerant

Type \ R410A




Refrigerant

pipe




down) m 5

Connection

wire




Filter \ G4


Net weight kg 360

Outdoor unit Net dimension (W×H×D) mm 1,470×988×690(No include supporting bar)

Net weight kg 105

Notes:






14










Cooling



Input W 11,300

EER W/W 2.73



Compressor


Type \ Scroll

Qty. \ 1

Brand \ Copeland

Capacity W 29,200

Input W 9,200

Rated current (RLA) A 20




Indoor fan

Model (× quantity) \ Y2FD100L2-4 (×1)


Input W 3,000

Speed r/min 1,420

Indoor coil

Number of rows \ 4


Fin spacing mm 1.8


Pipe size mm Ф9.52


Coil(W×H) mm (726×686)+(726×686)


Outdoor fan

Type \ FN type, AC axial fan

Motor Model (× Quantity) \ WZZ800-8 (×1)


Motor Input W 1,100/760

Speed r/min 680/530

Outdoor coil No. of rows \ 3


15


Fin spacing mm 2.2




Coil (W×D) mm 1447×1219





Indoor noise level dB(A) 67

Outdoor noise level dB(A) 65

Refrigerant

Type \ R410A


Control \ Thermal expansion valve


Refrigerant

pipe




down) m 5

Connection

wire




Filter \ G4


Net weight kg 365/432

Outdoor unit Net dimension (W×H×D) mm 1,660×1,290×690 (Without supporting bar)

Net weight kg 140/250

Notes:






16


Outdoor model(×Quantity) MA0601 (×1)








Cooling



Input W 12,500

EER W/W 2.72



Compressor


Type \ Scroll

Qty. \ 1

Brand \ Copeland

Capacity W 32,600

Input W 10,200





Indoor fan



Input W 3,000

Speed r/min 1,420

Indoor coil

Number of rows \ 4


Fin spacing mm 1.8


Pipe size mm Ф9.52


Coil(W×H) mm (1,210×660.4)+(1,210×660.4)


Outdoor fan

Type \ Axial fan



Motor Input W 1,100

Speed r/min 680


17

Outdoor coil

No. of rows \ 4


Fin spacing mm 2.2




Coil (W×D) mm 1,448×1,219.2







Refrigerant

Type \ R410A


Control \ Thermal expansion valve


Refrigerant

pipe




down) m 5

Connection

wire




Filter \ G4

Indoor unit Net dimension (W×H×D) mm 1,400×1,971×870

Net weight kg 460

Outdoor unit Net dimension (W×H×D) mm 1,660×1,290×690(No include supporting bar)

Net weight kg 150

Notes:






18










Cooling



Input W 15,400

EER W/W 2.62



Compressor


Type \ Scroll

Qty. \ 2

Brand \ Copeland

Capacity W 20,000

Input W 6,400





Indoor fan



Input W 2,200

Speed r/min 1,420

Indoor coil

Number of rows \ 4


Fin spacing mm 1.8


Pipe size mm Ф9.52


Coil(W×H) mm (1,590×685.8)+(1,590×685.8)


Outdoor fan

(Single

outdoor unit)

Type \ Axial fan



Motor Input W 940

Speed r/min 900


19

Outdoor coil

(Single

outdoor unit)

No. of rows \ 3


Fin spacing mm 2.2




Coil (W×D) mm 1,250×914.4







Refrigerant

Type \ R410A

Recharged (After installation) g 8,500×2



Refrigerant

pipe




down) m 5

Connection

wire


Outdoor power wire mm2 (4×1.0mm2)+(4×1.0mm2)

Signal wire mm2 (4×1.0mm2)+ (4×1.0mm2)

Filter \ G4


Net weight kg 563

Outdoor unit

(Single)

Net dimension (W×H×D) mm 1,470×988×690(No include supporting bar)

Net weight kg 105

Notes:






20










Cooling



Input W 16,900

EER W/W 2.66



Compressor


Type \ Scroll

Qty. \ 1

Brand \ Copeland

Capacity W 44,000

Input W 13,500





Indoor fan



Input W 2,200

Speed r/min 1,420

Indoor coil

Number of rows \ 4


Fin spacing mm 1.8


Pipe size mm Ф9.52


Coil(W×H) mm (1,590×685.8)+(1,590×685.8)


Outdoor fan

Type \ Axial fan



Motor Input W 940

Speed r/min 900


21

Outdoor coil

No. of rows \ 3


Fin spacing mm 2.2




Coil (W×D) mm 1,750×1,219.2







Refrigerant

Type \ R410A




Refrigerant

pipe




down) m 5

Connection

wire




Filter \ G4


Net weight kg 560

Outdoor unit Net dimension (W×H×D) mm 1,980×1,290×690(No include supporting bar)

Net weight kg 170

Notes:






22










Cooling



Input W 19,100

EER W/W 2.6



Compressor


Type \ Scroll

Qty. \ 2

Brand \ Copeland

Capacity W 25,200

Input W 7,800





Indoor fan



Input W 3,000

Speed r/min 1,420

Indoor coil

Number of rows \ 4


Fin spacing mm 1.8


Pipe size mm Ф9.52


Coil(W×H) mm (1,590×685.8)+(1,590×685.8)


Outdoor fan

(Single

outdoor unit)

Type \ Axial fan



Motor Input W 1,100

Speed r/min 680


23

Outdoor coil

(Single

outdoor unit)

No. of rows \ 3


Fin spacing mm 2.2




Coil (W×D) mm 1,250×914.4







Refrigerant

Type \ R410A




Refrigerant

pipe




down) m 5

Connection

wire


Outdoor power wire mm2 (4×1.0mm2)+ (4×1.0mm2)


Filter \ G4


Net weight kg 665

Outdoor unit

(Single)

Net dimension (W×H×D) mm 1,470×988×690(No include supporting bar)

Net weight kg 105

Notes:






24










Cooling



Input W 22,600

EER W/W 2.62



Compressor


Type \ Scroll

Qty. \ 2

Brand \ Copeland

Capacity W 29,200

Input W 9,200





Indoor fan



Input W 3,000

Speed r/min 1,420

Indoor coil

Number of rows \ 4


Fin spacing mm 1.8


Pipe size mm Ф9.52


Coil(W×H) mm (1,590×685.8)+(1,590×685.8)


Outdoor fan

(Single

outdoor unit)

Type \ Axial fan



Motor Input W 1,100

Speed r/min 680


25

Outdoor coil

(Single

outdoor unit)

No. of rows \ 3


Fin spacing mm 2.2




Coil (W×D) mm 1447×1219







Refrigerant

Type \ R410A




Refrigerant

pipe




down) m 5

Connection

wire




Filter \ G4


Net weight kg 680

Outdoor unit

(Single)

Net dimension (W×H×D) mm 1,660×1,290×690(No include supporting bar)

Net weight kg 140

Notes:






26










Cooling



Input W 26,800

EER W/W 2.65



Compressor


Type \ Scroll

Qty. \ 2

Brand \ Copeland

Capacity W 32,600

Input W 10,200





Indoor fan



Input W 2,200

Speed r/min 1,420

Indoor coil

Number of rows \ 4


Fin spacing mm 1.8


Pipe size mm Ф9.52


Coil(W×H) mm (2,453×660.4)+(2,453×660.4)


Outdoor fan

(Single

outdoor unit)

Type \ Axial fan



Motor Input W 1,100

Speed r/min 680


27

Outdoor coil

(Single

outdoor unit)

No. of rows \ 4


Fin spacing mm 2.2




Coil (W×D) mm 1,448×1,219.2







Refrigerant

Type \ R410A




Refrigerant

pipe




down) m 5

Connection

wire




Filter \ G4


Net weight kg 910

Outdoor unit

(Single)


Net weight kg 150

Notes:






28










Cooling



Input W 30,700

EER W/W 2.64



Compressor


Type \ Scroll

Qty. \ 2

Brand \ Copeland

Capacity W 37,300

Input W 11,600





Indoor fan



Input W 2,200

Speed r/min 1,420

Indoor coil

Number of rows \ 4


Fin spacing mm 1.8


Pipe size mm Ф9.52


Coil(W×H) mm (2,453×660.4)+(2,453×660.4)


Outdoor fan

(Single

outdoor unit)

Type \ Axial fan



Motor Input W 940

Speed r/min 900


29

Outdoor coil

(Single

outdoor unit)

No. of rows \ 3


Fin spacing mm 2.2




Coil (W×D) mm 1,750×1,219.2







Refrigerant

Type \ R410A




Refrigerant

pipe




down) m 5

Connection

wire




Filter \ G4


Net weight kg 920

Outdoor unit

(Single)


Net weight kg 170

Notes:






30










Cooling



Input W 34,300

EER W/W 2.63



Compressor


Type \ Scroll

Qty. \ 2

Brand \ Copeland

Capacity W 44,000

Input W 13,500





Indoor fan



Input W 3,000

Speed r/min 1,420

Indoor coil

Number of rows \ 4


Fin spacing mm 1.8


Pipe size mm Ф9.52


Coil(W×H) mm (2,453×660.4)+(2,453×660.4)


Outdoor fan

(Single

outdoor unit)

Type \ Axial fan



Motor Input W 1,100

Speed r/min 680


31

Outdoor coil

(Single

outdoor unit)

No. of rows \ 3


Fin spacing mm 2.2




Coil (W×D) mm 2,250×1,219.2







Refrigerant

Type \ R410A




Refrigerant

pipe




down) m 5

Connection

wire




Filter \ G4


Net weight kg 920

Outdoor unit

(Single)


Net weight kg 220

Notes:





Midea Precisi

32

2.4 Dimen

Indoor

on AC Technic

nsion (Uni

r unit: MAD0

cal Manual

t: mm)

020T1N1S1

, MAD025T

T1N1S1, MA

AD030T1N1S

M

S1

MCAC-PDSMM-2013-01

MCAC-PDSM

Indoor

M-2013-04

r unit: MAD0

035T1N1S1

Midea

View of op

a Precision AC

pened door

Technical Ma

r

anual-Down Delivery Series

33

3

Midea Precisi

34

Indoor

Indoor

on AC Technic

r unit: MAD0

r unit: MAD0

cal Manual

040T2N1S1

070T2N1S1

, MAD045T

, MAD080T

T1N1S1, MA

T2N1S1, MA

AD050T2N1S

AD090T2N1S

M

S1, MAD060

S1

MCAC-PDSM

0T2N1S1

M-2013-01

MCAC-PDSM

Outdoo

Outdoo

M-2013-04

or unit: MA

or unit: MA

A0331, MA04

A0752, MA09

Mode

MA033

MA043

MA054

MA060

MA075

MA098

431, MA054

982

el L

31 147

31

41 166

01

52 198

82 248

Midea

41, MA0601

L

70 9

60

180

80

a Precision AC

H

988

290

Technical Ma

W

690

anual-Down Delivery Series

35

5

Midea Precisi

36

2.5 Servic

Indoor

Outdoo

Outdoo

on AC Technic

ce space

r unit (Unit:

or unit with

or unit with

cal Manual

mm)

h horizontal

h vertical ins

installation

stallation (U

n (Unit: mm

Unit: mm)

)

MMCAC-PDSM

M-2013-01

M

3

2Midea Precision AC

37

2.6 Wiring diag

E-box view o

Technical Manual-D

gram

of indoor unit

Down Delivery Seriees MCAAC-RTSM-2013-04

M

3

Midea Precision AC

38

Indoor unit w

Available for M

Indoor unit w

Available for M

Technical Manual

with single syst

MAD020T1N1S1, M

with dual-system

MAD040T2N1S1, M

tem- Controlling

MAD025T1N1S1, MA

m- Controlling c

MAD050T2N1S1, MA

g connection am

AD030T1N1S1, an

connection amp

AD060T2N1S1, MA

mplification figur

d MAD035T1N1S,

plification figure

AD070T2N1S1, MA

re:

MAD045T1N1S1

e:

AD080T2N1S1, and

MAD090T2N1S1

MCACC-PDSM-2013-01

Midea Precisi

39

Outdoo

Outdoo

on AC Technic

or unit- MA

or unit- MA

cal Manual-Do

A0331, MA04

A0752, MA09

own Delivery S

431, MA054

982

Series

41, MA0601

MCAC-RT

TSM-2013-04

Midea Precisi

40

3. Instal

The

out

Bef

ser

pip

Ins

The

Notes:

——: Pi

------: Th

※ : For

(Do

+ : W

co

on AC Technic

llation

e indoor unit

tdoor unit is

fore the inst

rvice, and co

eline laying,

tallation wor

e whole syst

pelines provi

he site-laying

r system norm

one by sit)

hen the equiv

mponents. (T

cal Manual

t must be in

installed on

tallation, con

onfirm wheth

, wiring and

rk must stric

tem layout d

ided by manu

pipeline (Do

mal operation

valtent length

These optiona

stalled on th

the ground

nfirm whethe

her the build

ventilation p

ctly follow th

diagram:

ufacturer

ne by technic

n and mainten

h of the pipe

al componen

he ground of

of the outdo

er the install

dings need to

pipe.

e design dra

cians)

nance conve

exceeds 30 m

nts need to be

f the device

oors or othe

ation enviro

o be configu

awing.

nience, the c

meters, then

e purchased

M

room or com

er rooms.

ment meet t

ured with the

components a

it should be e

by another o

MCAC-PDSM

mputer room

the requirem

e constructio

are supposed

eqquipped w

order).

M-2013-01

m. And the

ments of

on work of

d to be used.

ith these

MCAC-PDSM

Wh

of

rev

co

Th

M-2013-04

hen the cond

the conden

verse bend,

pper pipe of

he installatio

denser is hig

ser, to avoid

it must ensu

f condenser

n diagram, w

gher than co

d liquid refri

ure that the

.

when the ind

Midea

ompressor, i

gerant back

top elbow p

door unit is h

a Precision AC

nstall revers

kflow when t

pipe of the re

higher than

Technical Ma

se bend on t

the units sto

everse bend

outdoor unit

anual-Down D

the inlet and

ops. When i

d higher than

t.

elivery Series

41

d outlet pipes

installing the

n the top row

1

s

e

w

Midea Precisi

42

3.1 Storag

Sto

Am

Am

Sto

3.2 Indoor

Ta

wo

Mo

the

In o

nor

Co

mo

con

Ou

deh

inh

win

Bec

dam

ind

To

uni

Do

refr

on AC Technic

ge environ

Items

orage environ

mbient humidi

mbient temper

orage time

r installati

ke down the

ooden case.

ove the back

e bolts with w

order to ens

rmally, it sho

mputer room

oisture-proof

ncrete wall a

tdoor air ent

humidifyting

aled quantit

ndows shoul

cause the a

mage of othe

oor unit, and

ensure the n

t installation

not install th

rigeration cy

cal Manual

nment

nment Ind

ity 5%

rature Ind

Tot

mo

ion

e packaging

k plate, and

wrench.

ure that the

ould do the m

m should ha

f layer of cei

and ground m

ter into the r

load, so it is

ty should rem

d be fully en

ir conditione

er precision

d the installa

normal oper

n site.

he indoor un

ycle, and the

oor, clean.

~85% RH (N

oor unit: -20°

tal time of tr

nths. If exce

case, accor

the unit bas

environmen

moisture-pro

ve good the

ling and wal

must be mo

room may in

s necessary

main below

nclosed type

er will produc

equipments

ation scene

ration of indo

nit in the nar

en leads to a

R

No condensa

°C~54°C; Out

ransportation

ed 6 months

rding to the

se was fixed

nt control sy

oof and heat

ermal insulat

ll must use p

isture-proof

ncrease the

y to minimize

5%of whole

e, and apert

ce the cond

s nearby, the

of air condit

oor unit, it s

rrow space,

a short circu

Requirement

ation)

tdoor unit: -40

n and storag

s, it need to r

package dia

d in the botto

ystem in the

t preservatio

tion and sea

polyethylene

.

system coo

e outdoor ai

e indoor air c

ure are as s

ensate and

ere is not th

tioner must

hould choos

or it would b

it of returnin

M

ts

0°C~70°C.

e time shou

re-calibrate th

agram to rem

om wood tray

air condition

on work.

aled moisture

e film materi

ling, heating

r enter into t

circulation am

small as pos

water leaka

e precision e

be provided

se capacious

block the air

ng air and ai

MCAC-PDSM

uld not excee

he capacity.

move the pa

y with M8 b

ning room w

e-proof laye

ials. The pa

g, humidifyin

the room. O

mount, all th

ssible.

age may cau

equipments

d the drainag

s space as t

r flow, and s

r noise.

M-2013-01

ed 6

ackaging

olts, remove

works

er, the

inting of

ng and

Outdoor air

he doors and

use the

near the

ge pipelines

the indoor

horten the

e

d

.

MCAC-PDSM

Do

Do

the

Do

Acc

inst

Pla

Det

inst

Use

All

cho

Sin

Dua

M-2013-04

not fix the i

not make s

e unbalanced

not install o

cording to th

talled.

ace rubber d

termine the

tall the insta

e bolts, cush

outside plat

oosing insta

ngle-door un

al-door unit

ndoor unit in

everal indoo

d competitio

other equipm

he bottom in

amping mat

installation

allation base

hion, flat ma

tes of the un

llation angle

nit installation

installation

n the sunken

or units to be

on operation

ments on its

stallation siz

ts on the top

position, and

e at the selec

at and nuts t

nit should no

es and fixed

n basing siz

basing size:

Midea

n place or at

e huddled to

.

upper part,

ze of the ind

p of the insta

d according

cted position

to fix the air

ot allow bear

holes.

ze: (Unit: mm

: (Unit: mm)

a Precision AC

t the end of

ogether, to a

convenient

door unit, the

allation base

to the site c

n.

conditioner

ring weight,

m)

Technical Ma

the long and

avoid crossin

for its norma

e installation

e and steel p

condition and

on the base

it must be c

anual-Down D

d narrow roo

ng the air an

al maintena

n base shou

plate bottom

d user’s req

e.

considered w

elivery Series

43

om.

nd producing

nce.

ld be

m.

uierments to

when

3

g

o

Midea Precisi

44

Thr

I

Steel plate

Angle iron (St

Anti-shock

rubber pad

Fixing hole fo

H

Notes:

The in

To

red

fas

Fir

fas

on AC Technic

ree-door uni

tem

teel channel)

k

d

Top

Bottom

r expansion b

stallation bas

prevent def

duction mate

steners and

rst dismantle

stening torqu

cal Manual

it installation

Spec

100

40×40

Th

m Thic

olt

se should be

formation an

erials on the

vibration re

ed three L sh

ue: 12±1N.m

n basing size

ification (mm

×100×(5~6.5)

0×3 (50×37×4.

ickness: 3~5

ckness: 10~12

300

strong to su

nd damage d

e key places

duction mat

hape fixed m

m.

e: (Unit: mm

m)

)

.5)

Rubber

rubber o2

Install a

This is o

needs o

upport the ind

during trans

s when the u

terials before

metal plates

m)

r materical can

or rubber gask

as user require

only for refere

of users.

door unit.

sportation, it

unit left facto

e installing a

, and install

M

Remar

n choose isopr

ket with the sa

ements.

ence, it should

was added

ory. Remove

and debuggi

the bolts an

MCAC-PDSM

rk

rene rubber, d

ame similar pr

according to

fasteners o

e the transpo

ing the unit.

nd gaskets w

M-2013-01

different bulyl

roperties.

the actual

r vibration

ortation

with the bolts

s

MCAC-PDSM

3.3 Install

Aft

To

av

It i

he

Ins

Wh

rel

Th

Ou

H

Ins

ins

For ho

Ins

(M

M-2013-04

ling outdo

ter the unit a

ensure the

oid places w

s suggested

elp to low do

stall the unit

hen it is inst

ated local ru

he installatio

utdoor unit h

Horizontal:

side the pac

sallation.

rizontal ins

stall the outd

M6×23 Screw

oor units

arrives, chec

heat disper

with dust, sn

d that user s

wn the noise

far away fro

talled at the

ules.

n direction p

has two meth

ckage of outd

stallation:

door unit sup

ws in access

ck whether i

sion of the u

now, etc. It w

should horizo

e.

om the resid

top of the b

please refers

hods of insta

door unit, th

pporting bar

sories packa

Midea

t is damage

unit, intall th

will block the

ontal intall th

dential area.

uilding, pay

s to the insta

allation: hor

Verti

ere are four

r to ghe unit

age), totally 4

a Precision AC

ed during the

e outdoor un

e condensed

he unit if the

attention to

allation arro

izontal insta

cal (Top vie

r supporting

first, use 6

4 bars.

Technical Ma

e shipment.

nit at the wil

coils.

e installation

the water p

w label on th

allation and v

w):

bars which

screws to fix

anual-Down D

ll-ventilatde

conditions

proof layer a

he outdoor u

vertical insta

are fixed in

x the suppor

elivery Series

45

outdoor,

allow, which

nd obey the

unit.

allation.

horizontal

rting bar

5

h

e

Midea Precisi

46

It i

For ver

It is

3.4 Conne

Fo

the

Do

ob

co

pa

It n

on AC Technic

Mode

MA033

MA043

MA054

MA060

MA075

MA098

s suggested

rtical instal

s suggested

ecting refr

or ensure sa

e nitrogen in

o the heat in

bstacles, vibr

pper pipes d

articles and s

needs to app

cal Manual

el

31 1

31

41 1

01

52 1

82 2

d that use M

llation

d that use M

rigerant pi

fety, before

n the air con

sulation for

ration isolati

direct contac

so on away f

ply high qua

L1

1112

1310

1604

2105

M6×20 expan

6×20 expan

ipe

welding the

ditioner syst

the copper p

ing measure

ct with the w

from the cop

ality silver fib

H1

764

1066

nsion bolt fo

nsion bolt fo

pipelines a

tem, which c

pipes. When

ements as s

wall, meanw

pper pipes.

ber for weldi

D1

49

r fixing the m

r fixing the m

nd welding s

can release

n the copper

hock pad sh

hile pay atte

ng the pipel

M

(Un

mounting ba

mounting ba

spots, must

the system

r pipes go th

hould be don

ention to kee

ine connect

MCAC-PDSM

nit: mm)

D2

63

ase.

ase.

completely

pressure.

hrough the w

ne for avoidi

ep dust, aqu

tors. During

M-2013-01

discharge

walls or othe

ing the

ueous vapor,

the welding

er

,

MCAC-PDSM

pro

Ma

Ma

Fil

Th

sh

If o

ou

wh

Ins

Th

elb

to

Wh

ou

ma

Wh

va

an

M-2013-04

ocess, it nee

ake sure the

ake sure the

l refrigerant

he pipeline p

ould be con

one way equ

tdoor units i

hether need

Outdoo

Outdoo

stall grease

he suggested

bow and the

the site con

Outd

liquid

hen the unit

tdoor unit is

aterials befo

hen welding

lve before w

d side pane

eds to charg

e right conne

e outdoor un

and add ref

pressure dro

sidered duri

uivalent leng

is higher tha

to add the e

R

or unit installe

or unit installe

traps (oil loo

d pipeline si

e valve have

ditions.

door diamete

d pipe (Inch

3/8

1/2

5/8

3/4

7/8

1-1/8

leave the fa

s filled with n

ore connect t

g the copper

welding. Duri

el of unit.

ge nitrogen i

ecting pipe s

nit installation

frigerant and

ps, compres

ing the desig

gth is longer

an the numb

extended co

Relative posi

ed level is hi

ed level is low

op) every 7.5

zes in the fo

counted. Th

er of

) 90° B

0.2

0.2

0.2

0.

0.4

0.5

actory, it will

nitrogen gas

the indoor u

pipe with th

ing welding,

Midea

nto the pipe

size.

n height of u

d add refrige

ssor oil retu

gn and cons

r than 30m, o

berical show

omponents b

ition

gher than ind

wer than ind

5 meters of

ollowing tab

he installer w

Equiva

Bend 45° B

21 0

24 0.

27 0.

.3 0.

44 0.

56 0

has a smal

s to stay the

unit and outd

he indoor an

pay attentio

a Precision AC

eline for prot

unit pipeline

erant oil of u

rn, noise red

struction pro

or the vertic

ed in followi

before instal

door unit

door unit

the all vertic

le are equiv

will confirm w

alent length (

Bend T-sh

0.1

.12

.15

.18

.24

0.3

l amount of

pressure, a

door unit at s

nd outdoor u

on to do not

Technical Ma

ection.

installation.

unit pipeline

duction and

ocesses.

al height de

ng table, the

lation.

Value

Max. 2

Max. -5

cal height tu

alent length

whether it is

(Meter)

hape three-w

0.76

0.76

0.76

0.76

1.1

1.4

refrigerant i

nd must be

site.

nit, pack the

burn the lab

anual-Down D

.

installation.

vibration re

efference of

en it needs

e

20m

5m

ubes.

, the friction

s appropriate

way

in the indoor

put off all th

e wet cloth o

bels near the

elivery Series

47

duction

indoor and

to confirm

n losses of

e according

r unit, the

hese

on the ball

e base pane

7

el


48

Do not open the system pipeline more than 15 minutes, or it will lead to freeze the cooling oil and

influence the usage lifespan of the key parts in the system and the system operation stability.

The horizontal part of the gas pipe should be sloped down part after led out from the compressor,

its gradient at least should be 1:200 (every 1m should drop 5mm). But if the air exhaust pipe is

located at the place of cooling equipments (including under the block up floor) then it should be

insulated.

Considering the diameter will cause the system pressure drop loss, the copper pipes diameters

connecting between indoor and oudoor units.

Indoor unit model Length 10m 20m 30m 40m 50m 60m

MAD020T1N1S1 Gas pipe 22mm 22mm 22mm 22mm 22mm 22mm

Liquid pipe 13mm 13mm 13mm 13mm 16mm 16mm





















Notes:

If the pipe length is more than 60m, please consult the manufacturer.

When the pipe equivalent length is more than 30m, then it needs to install the extended

components. During the extended components installation, to prevent pipelines open, it

suggested that install the extended the electromagnetic valve body components on the outside

of the liquid pipe ball valve, or int the outside or the bottom of the equiment.

So in the electromagnetic valve installation operation process, it do not need to cut the indoor

pipeline, and after the whole system installation, then open the ball valve for pressurizing and

vacuum operation, to avoid moisture absorption of the compressor frozen oil, and ensure that

MCAC-PDSM

the

pip

the

Th

3.5 Vacuu

Aft

the

for

Un

sys

gla

Aft

am

If t

12

Wh

sys

as

M-2013-04

e operation o

pe in the pro

e pipe to the

he electroma

um and ad

ter finished

en filled with

r 24 hours.

nder the pipe

stem loop to

asses in indo

ter the vacu

mount liquid

the connecti

2kg.

hen the con

stem for the

the folling f

of the comp

ocess of pipe

e outdoor un

agnetic valve

d refriger

piping conne

h 30kgf/cm2

eline pressu

o below 20P

oor unit will

um inspectio

refrigerant a

ng pipe leng

necting pipe

e system nor

formula:

ressor and i

e intallation.

nits.

e wire conne

Si

Dua

ant

ection betwe

nitrogen fro

urizing was n

Pa, and keep

indicate to b

on, the refrig

and adds su

gth of indoor

e length is m

rmal operatio

Midea

its lifespan.T

Be sure to

ection as the

ingle-syste

al-system t

een the indo

m the outdo

no problem,

p for 2 hours

be green.

geration sys

uitable amou

r unit and ou

more than 10

on. The calc

a Precision AC

Trash and fo

blow them o

e following f

m type

type

oor and outd

oor unit cove

use vacuum

s, if the pres

stem should

unt refrigeran

utdoor unit is

0m, then it n

culation for t

Technical Ma

oreign matte

off with niltro

igure:

door unit, op

er connector

m pump to va

sure is no p

static filling

nt oil.

s within 10m

eeds to add

the added q

anual-Down D

ers may com

ogen before

pen all ball v

r, and then p

acuum refrig

picks up, the

quickly by p

m, the filling

d refrigerant

uantity of re

elivery Series

49

me into the

connecting

alves, and

pressurizing

geration

liquid sight

pecified

refrigerant is

into the

efrigerant is

9

s

Midea Precisi

50

Ad

Co

The co

Tot

Tot

Ad

lub

fol

Ad

Re

3.6 Water

Co

an

pip

Th

co

Th

wir

ca

wh

No

on AC Technic

dding amount

orresponding

rresponding

Liquid pipe

tal length of t

tal length of l

dd refrigeran

brication and

low:

dded refrigera

efrigerants ad

pipe insta

ondensed w

d drained o

pe, then the

he drainage

ntinuous the

he water lea

rings is conn

n directly be

here is easy

otes:

cal Manual

t of refrigeran

unit Length

g unit length

outer diame

12.7

16

19

22

25

28.6

the extend liq

liquid pipe (m

nt will cause

d cooling eff

ant oil amoun

dditional amo

allation

water drainag

ut. The inne

tube inner d

pipe shou

ermal resista

kage detect

nected with

e installed th

to collect th

nt (kg) =

additional ref

additional re

eter (mm)

quid pipe (m)

m) -10m

the system

fect, therefor

nt (ml) =

unt (kg) × 22.

ge pipes of

er diameter o

diameter sho

ld be conn

ance is high

tor should be

terminal 01

here. If the p

he water.

frigerant amo

efrigerant am

Refrigeran

=

refrigerant o

re, it needs

.6

humidifier a

of the tube

ould be mini

ected with

er than 100

e installed u

and 47. If th

place is une

ount (kg/m) ×T

mount for di

nt adding am

0

0

0

0

0

0

oil dilution, w

to add refrig

and evapora

is 30mm, if

imum 40mm

a U shape

°C. The U s

under the joi

he place und

even, the de

M

Total length o

fferent liquid

mount per m

0.11

0.17

0.26

0.36

0.52

0.68

which affect

gerant oil. Ad

ator are gat

more than 3

m.

e joint pipe,

hape must b

int of draina

der the pipe

etector shou

MCAC-PDSM

of extend liqu

d pipe diame

meter (kg/m)

the refriger

dditional form

thered by th

3 sets units

, which tem

be installed

age pipe and

e joint is flat,

ld be install

M-2013-01

uid pipe (m)

eters:

ant oil

mula is as

he T adapte

share a roo

mperature o

vertically.

d root, which

the detecto

ed the place

er

ot

of

h

or

e

MCAC-PDSM

B ≥

A ≥

P:

Hu

filte

filte

Re

Fin

PH

Re

To

Te

To

So

Iro

Ch

Sil

Ch

Ca

PU

lea

Th

pre

be

of

Th

the

M-2013-04

≥ P/10+20 (Un

≥ B/2 (Unit: m

Air outlet sta

umidifier also

er device o

ers should n

equirements

nite index of

H value

elative electr

otal hardness

emporary ha

otal non-solu

olid waste at

on + Mangan

hlorine

ica

hloride ion

alcium sulfat

U tube can

akage.

he normal w

essure redu

low 100kPa

main pipelin

he water inle

e connectors

nit: mm)

mm)

atic pressure

o needs to

n the water

not less than

for the wate

f ‘ordinary’ w

ric conductiv

s

rdness

uble solid

t 180°C

nese

te

be directly

working pres

ced device

a, it should se

ne must in a

et pipe conn

s of the wate

(Unit: Pa)

connect wit

r inlet pipe,

n 40.

er quality inl

water quality

vity at 20°C

connected

ssure range

on the place

et water coll

ccordance w

necting acce

er pipe are o

Midea

th an inlet w

for mainten

let to the hu

y

PH

SR,20°C

TH

CR

R180

with outer w

e of main p

e pressure m

lecting sump

with the loca

essories as

only for refe

a Precision AC

water pipe. I

nance conve

midifier:

C μs/c

mg/l Ca

mg/l Ca

mg

mg

mg/l Fe

ppm

mg/l S

mg/l

mg/l Ca

water pipe.

pipe is 100k

more than 8

p and water

al regulation

following sh

rence to cho

Technical Ma

nstall a side

enience. The

L

Mi

7

cm 30

aCO3 =

aCO3 =

/l (*

/l (*

e+Mn =

Cl =

SiO2 =

Cl- =

aSO4 =

It must sea

kPa to 800k

800kPa. If th

pump syste

s.

hows. It has

oose.

anual-Down D

e-pass stop

e filter mes

Limit valve

in. Max.

7 8.5

00 1250

= 400

= 300

*) (*)

*) (*)

= 0.2

= 30

= 20

= 0.2

= 100

al connecto

kPa. It sho

he main pipe

em. The wate

s equipped w

elivery Series

51

valve and a

h number o

or to preven

ould install a

e pressure is

er inlet pipes

with the unit

1

a

of

nt

a

s

s

t,

Midea Precisi

52

3.7 Electr

All

an

Th

Be

the

Ba

If i

for

an

tha

Fix

Wi

on AC Technic

ic connec

the power w

d local regu

he main pow

efore connec

e power sup

ase panel ha

t is difficult f

r connection

d left sides)

at any two o

x the spare w

iring refers t

cal Manual

ction

wires, contro

ulations and

wer supply re

ct the electri

pply has bee

as three cutt

for piping an

n. Knock dow

according t

of the pipelin

wirings on th

to indoor uni

olling wires a

electrical ru

equirements

c circuit, use

en closed.

ting holes to

nd wiring fro

wn the plate

o the actual

e, power wi

he electric c

it power wiri

and the gro

ules.

s: 380V AC,

e the voltme

o passby the

m the base

of side pan

need to cho

re and signa

cable fasteni

ing diagram

unding conn

50Hz, 3Ph.

eter to test th

e wirings.

panel, then

el cutting ho

oose import

al wire to ou

ng clamp.

, as followin

M

nection shou

he input pow

it can choos

ole, (2 cuttin

and export p

tlet from the

g picture.

MCAC-PDSM

uld observe

wer voltage,

se from the

ng holes both

ports, but it

e different ho

M-2013-01

the national

and confirm

side panel

h on right

must ensure

ole.

l

m

e

MCAC-PDSM

Ind

Wi

M-2013-04

door unit con

iring refers t

ntrolling con

to outdoor u

nnection amp

Sing

Dua

nit wiring dia

Midea

plification fig

gle-system

al-system t

agram, as fo

a Precision AC

gure:

type

type

ollowing pict

Technical Ma

ture,

anual-Down D

elivery Series

53

3

Midea Precisi

54

Fie

Us

an

Do

pip

on AC Technic

eld wiring,

se protection

d condense

o not contac

pes, compre

cal Manual

n pipe or shi

er.

t the cables

essor, etc.) fo

elding wire f

with high te

or protect th

Single-sys

Dual-syste

for the outdo

emperature o

he insulation

stem type

m type\

oor parts of

objects (Suc

layer.

M

the connect

ch as non-he

MCAC-PDSM

ting wires of

eat insulated

M-2013-01

f indoor unit

d copper

MCAC-PDSM

3.8 Trial ru

Int

Fo

lam

lam

Dis

On

inp

Ala

OK

Bu

Ba

wil

bu

Sh

us

op

Qu

Sh

pa

M-2013-04

un

troduction of

or all th butto

mp to mean

mps.

scriptions o

n/Off key: G

put or monito

arm key: Re

K key: Yellow

uttons desc

Menu:

ack to Menu

ll display un

tton can go

Mainte

hift to the firs

e for check

peratiom of t

Print:

uick display

Status

hift to the firs

arameters dis

f LCD manu

ons, when it

a paragraph

of display l

Green color, l

or.

ed colour, Li

w colour, lig

criptions of

(M0) under

it status, pro

back.

enance:

st page of th

the operatin

he device.

the pLAN ad

(Input/Outp

st page of in

splay contro

ual operator

is displaying

h is selected

amp:

ight up mea

ght up mean

ht up means

LCD manu

any display

obe reading

e maintenan

ng status, pr

ddress of cu

put):

put/output in

ol plate.

Midea

functions

g or modifyi

d silicone ru

ans that unit

ns one or m

s that device

ual operator

y situation (E

and operati

nce interface

robe reading

urrent contro

nterface (I0)

a Precision AC

ng the opera

bber button

is on. Flash

more alarms.

e normally is

r

Except chec

ing mode, u

e (A0), usua

g, maintenan

ol plate.

), input/outp

Technical Ma

ation param

which has t

means that

s powered.

king factory

nder factory

ally the main

nce, calibrat

ut status of

anual-Down D

meters, show

three differe

t close the u

parameters

y interface, p

ntenance par

tion reading

input and ou

elivery Series

55

ws a green

nt color

unit by switch

s situation)

pressing this

rameters are

and manua

utput

5

h

s

e

l

Midea Precisi

56

Sh

op

Sh

Sh

mo

Wh

pa

On

Dis

If t

pro

the

If t

se

pa

Ge

pre

Be

on AC Technic

Time:

hift to the firs

perating para

Set:

hift to the firs

Progra

hift to the firs

ode.

Query:

hen the unit

ages.

on/off:

n/off the unit

alarm:

splay the ala

Up:

the cursor m

ogramsectio

e parameter

Down:

the cursor m

ction; If the

arameter val

enter:

enerally mov

ess this butt

efore trial run

cal Manual

st page of tim

ameter of clo

st page of se

am:

st page of us

:

is under gro

t.

arm, elimina

moves to the

om; If the cu

r value.

:

moves to the

cursor move

ue.

ve the curso

ton to confirm

n, the mecha

me program

ock plate an

et point prog

ser interface

oup control s

ate the alarm

upper left c

rsor moves

upper left co

es to a certa

or from the u

m and make

anical part a

(K0). Time

nd activate ti

gram (S1).

e (P0). User

state, can p

m sound, and

corner, click

to a certain

orner, click t

ain paramete

upper left to

e the cursor

and eletrical

parameter i

me zone.

interface is

press this bu

d eliminate t

this button c

parameter p

this button c

er position, c

the setting a

move to the

part shoud

M

s used to di

used to cha

tton to shift

the current a

can page up

position, clic

can page dow

click this but

area, after se

e next setting

be checked

MCAC-PDSM

isplay and s

ange the uni

different un

alarm.

p in the sam

ck this button

wn in the sa

tton to decre

etting param

g parameter

d first.

M-2013-01

et the

it operating

it display

e

n to increase

ame program

ease the

meters then

r.

e

m

MCAC-PDSM

Th

Ele

Th

Un

the

M-2013-04

he mechanic

Make sure

situation o

fan whell

Make sure

Make sure

reliably an

Make sure

Make sure

be used o

room env

Under the

limit the c

ectrical part:

Make sure

disconnec

Make sure

connector

When term

control sig

pressure.

Separated

It has ens

when leav

change a

he system m

nder standby

e status of th

Switch on

indication

manual o

Press the

and keep

type in ma

Notes:

The mainte

After conf

cal part:

e remove th

of motor whe

and the tens

e the refrige

e the water

nd check the

e the heatin

e the room t

other heating

ironment, an

e situation in

condensed a

:

e the main p

cting switch

e all the elec

rs of electric

minal numbe

gnal from ind

d arrange th

sured that th

ving the fact

ny two wires

manual detec

y state, the c

he system fu

n the main p

lamp on the

perator disp

Maintenan

pressing th

aintenance p

enance passw

firm the pass

he protective

eel and fan

sion of the b

erant and lub

drainage pip

e leakage.

g belt of com

temperature

g devices or

nd make sur

n winter, it ne

air volume to

power input

of the outdo

ctrical or con

cal and contr

er 22 and 5

door unit, an

he power cab

he phase seq

tory. It only n

s between A

ction function

controller pr

unctional co

ower supply

e upper righ

play interface

nce key on th

e Down but

password.

word can be

sword, keep

Midea

e materials fo

wheel, and

belt.

brication oil

pelines of hu

mpressor ha

e is over 20°

r operated th

re there are

eeds to man

o increase th

woltage is i

oor unit has

ntrolling wire

rolling conne

are connec

nd it can not

ble and the

quences of t

needs to ma

A, B,C of the

n:

rovides the f

omponents, d

y, at that tim

ht corner of t

e will display

he manual o

tton to shift t

got from man

p pressing th

a Precision AC

or the transp

also check t

have been f

umidification

as been pre-

C and has s

he electrical

rated capac

n-made shad

he condense

n the range

been closed

es are corre

ections.

ted well, the

t operate. It

low voltage

the three-ph

ake sure the

e main powe

functions of

detailed ope

e, the unit is

the main con

y the unit wa

operator, and

the page to A

nufacture.

he Down bu

Technical Ma

portation. Ch

the parallelis

filled strictly.

n system hav

-heated ove

some therma

heating of t

city thermal

dow parts of

ed pressure.

of -10%~15

d.

ectly connect

e outdoor fan

will cause th

controlling c

hase compon

phase sequ

r supply.

manual on a

eration steps

s under stan

ntroller will d

as turned off

d enter to the

A5 interface

tton to enter

anual-Down D

heck the fas

sm of motor

.

ave been con

er 12 hours.

al load. If no

the unit to p

load for tria

f condensed

.

5% voltage.

ted, and fas

n can not re

he system s

cable.

nents are th

uence is cor

and off at sit

s as followin

ndby state, a

display gree

f.

e maintenan

e, and then i

r the followin

elivery Series

57

stening

r wheel and

nnected

ot, it should

re-heat the

l run.

d area and

Power

sten all the

ceive the

stop as high

he same

rrect. If fault,

te to detect

ng:

and the

n, the

nce interface

t needs to

ng interface

7

,

e,

,

Midea Precisi

58

Ma

on AC Technic

and use th

manual o

confirmat

anual operat

After the u

paramete

and the u

the enter

and press

Press the

operating

press ent

cal Manual

he enter key

n/off setting

ion.

tor display a

unit is on, en

ers setting, in

nit status. P

key to move

s enter key f

e Menu butto

mode, or ad

ter button fo

y to move th

of the critica

and operatio

nter to the m

nclude clock

Press the Se

e the cursor

for confirma

on to go bac

djust the set

r confirmatio

he cursor po

al compone

on methods

main interfac

k message, c

et button to s

r and use the

ation.

ck to M0 pag

tting paramt

on.

sition, and u

nts, and the

ce and it will

curren ambi

set the temp

e Up and Do

ge, and pres

ters, after ad

M

use the Dow

en press the

display som

ent tempera

perature and

own keys to

ss Down key

djusted the s

MCAC-PDSM

wn button to

enter key f

me current b

ature and hu

d humidity, a

o change the

y to query th

setting param

M-2013-01

carry out the

or

basic

umidity value

nd through

e parameter

he current

meters and

e

e

r


59

Compressor checking: Press the Set key, the setting temperature to be room temperature

minus 5°C, the relative humidity to be the same as the room temperature, and press enter

to observe the compressor whether operates or reverses. (The compressor reverse then it

will has abnormal voice.)

Note:

The compressor cannot be reversed over 30 seconds, and it should be judged immediately and

cut off the power.

Back to M0 page, and press Status to check the rising pressure of the compressor is

normal or not, and at the same time, the outdoor fan should be high speed operating, and

the stable pressure of the compressor should about 30bar.

Cooling state detection: Press the Menu and press the Down button to check the current

mode is cooling or not.

Dehumidification function detection: Press the Set to change the temperature as the

same as the room temperature, and relative humidity set to the room temperature minus

5%RH. Press enter and the compressor will be normally operated, and then press the

Menu, press Down key to check the current mode is dehumidification or not.

Humidification function detection: Operate the humidifier switch, press the Set to change

the temperature as the same as the room temperature, and the relative humidity set to be

the room temperature plus 5%RH, then press enter to check the compressor stops or not

and the humidifier starts to inlet water or not. Press the Status, find the li page, and check

the current flow of the humidifier whether increased gradually, and wait the action of the

humidification tank change from Water inletting to be Evaporating. Press Manual

drainage switch to drain off the water.

The first grade heater detection: Operate two electrical heater switchs, press Set to set

the temperature to be room temperature plus 2°C, and the humidity stays the same as the

indoor humidity. Press enter to check whether stop humidifying and whether operate the

first grade electrical heating pipe, and then press Menu, Down key to check whether

display heating mode.

The second grade heater detection: Press Set to set the temperature to be room

temperature plus 4°C, and the humidity stays the same as the indoor humidity. Press enter

to check whether operate the second grade electrical heating pipe, and then press Menu,

Down key to check whether display heating mode.

Dehumidification heating mode: Press the Set button to change the relative humidity to

be indoor humidity minus 5%, press enter to check the compressor whether operates, and

then press Menu, Down to check whether display dehumidification heating mode.

Humidification heating status detection: Press Set to change the relative humidity to be

indoor humidity minus 5%, press OK to check the compressor whether stops and the

humidifier starts to inlet water and starts humidifying or not, at that time the humidification

tank will be getting hot, and then press Menu, Down to check whether display

humidification heating mode. Press Manual drainage switch to drain off the water.

Cooling humidification status detection: Press Set key to change the temperature to be

indoor temperature minus 5%, press enter, and operate the unit after the unit stops one

minute, to check whether continue humidifying or not; and press Menu, Down to check

whether display cooling humidification mode.


60

Safe operation of refrigerant system detection: Operate the compressor, and after the

unit is stable operated then check whether there are bubbles in the liquid sight glass. Adjust

the thermal expansion valve to the suction degree of overheating be about 5°C~8°C, and

each adjustment should not over 1/2 circle and at least observe over 15 minutes every time.

Observe the compressor gas suction pipeline, make sure the pipeline and the compressor

cover have no condensed water and eliminate the potential liquid slugging danger. Under

the status of 24°C 50%RH air return and 29~30bar condensing pressure, the compressor

gas suction pressure should over 9bar. After detection, adjust the temperature and humidity

back to the default setting value or the initialization setting value.

Steps after trial run

Reset the unit to default status.

Check and make sure the temperature and humidity setting value and control precision are

reasonable.

Check and make sure other functions are reasonable.

MCAC-PDSM

4. Contr

4.1 Table

Sc

M-2013-04

rol syste

of main co

chematic dia

em

ontrol com

No.1 Cont2 Ope3 Tem4 OEM5 Fan 6 Pres7 Fan 8 Heat9 Heat

10 Com11 Inne12 Oute

agram of the

Code

J10 St

N01 In

N02 C

N03 C

N04 E-

N05 E-

N06 D

N08 A

N011 H

N012 H

N013 H

Y1 In

Y3 O

Y4 O

mponents

troller ration displa

mperature & hM humidifier speed regu

ssure transmpressure difter 1 ter 2

mpressor r fan

er fan

main contro

tandard use

ndoor fan

ompressor 1

ompressor 2

-heater 1

-heater 2

ehumidificat

larm output

umidifier

umidifier wa

umidifier wa

ndoor fan reg

Outdoor fan r

Outdoor fan r

Midea

and cont

Name

ayer humidity senconnector clating invert

mitter fferernce sw

oller termina

Na

er port, nonn

1

2

tion solenoid

ater inlet valv

ater outlet va

gulation

regulation 1

regulation 2

a Precision AC

rol load

nsor componenter

witch

als

me

nect to manu

d valve

ve

alve

Technical Ma

quantity 1 1 1 1 1 1 1 1 1 1 1 1

ual operator

anual-Down D

elivery Series

61

1

Midea Precisi

62

OE

on AC Technic

T

EM humidifie

cal Manual

ID1 C

ID2 C

ID3 E-

ID4 E-

ID5 P

ID6 In

ID7 A

ID8 R

ID9 C

ID10 C

ID11 H

ID12 S

ID13 Fi

ID14 W

ID13H To

ID14H To

B1 In

B2 A

B3 A

B4 O

B5 In

B6 A

B7 E

B8 H

TX-/TX+ R

er connector

ompressor 1

ompressor 2

-heater 1 ov

-heater 2 ov

hase seque

ndoor fan ov

ir flow switch

emote contr

ompressor 1

ompressor 2

umidifier wa

parkles alar

ilter screen b

Water leakag

o 220V sign

o 220V sign

ndoor humid

ir dischargin

ir dischargin

Outdoor temp

ndoor tempe

ir outlet tem

lectric condu

umidification

S485 Conca

r componen

1 high press

2 high press

verload

verload

nce protecti

verload

h

rol

1 low pressu

2 low pressu

ater level ala

rm

blocking

ge alarm

nal

nal

ity

ng pressure

ng pressure

perature

erature

mperature

uctivity conn

n current

atenating co

nts

sure

sure

ion

ure

ure

arm

1

2

nector

onnector

MMCAC-PDSMM-2013-01

MCAC-PDSM

Ind

Ou

Button

MON/ESC

ENTER

>>

M-2013-04

door schema

utdoor fan fr

n

Monit

Data/

Shiftin

Up

atic diagram

requency co

Mame

toring/ESC

/Confirm

ng

m

nversion

1, For shiftin

2, Back to th

3, Clear the

1, Enter to t

2, Confirm t

1, Under qu

2, Under da

3, When am

function)

Add the fun

Midea

ng to system m

he previous m

e alarm when t

the menu.

to amend the d

uick monitoring

ata amending,

mend the funct

ction code or

a Precision AC

Func

monitoring sta

menu.

the inverter wa

data.

g mode, shift t

shift to amen

tion code, incr

data.

Technical Ma

ctions

atus.

as under alarm

to the monitore

d position.

rease as 10 un

anual-Down D

m state.

ed parameter

nits. (Only vali

elivery Series

63

.

id for P0

3

Midea Precisi

64

DIR/JOG

RUN

STOP/RES

Lamp na

RUN

DIR

LOCAL

TRIP

4.2 Main c

Ad

co

Co

Tim

op

Co

ov

Co

lev

Th

Eq

tim

co

Te

Ala

Po

au

on AC Technic

Direct

Run

Down

SET Stop/

me Status

On

Flash

Off

On

Flash

Off

On

Off

On

Off

control fun

djust the civi

ntrol, hHum

ompressor c

me setting fu

perate the m

ompressor a

erload alarm

ontrol one or

vels.

he bulit-in ele

quipment ma

ming and sen

ntrol only is

mperature c

arm manage

ower-off mem

tomatically

cal Manual

tion/Jog

n

Reset

s

The inver

h The inver

The inver

The inver

h The inver

The inver

Operation

Terminals

Slightly e

The inver

nction

l use or indu

idity control

control functi

unction: Min

inimal interv

alarm functio

m, General a

r two electric

ectrode type

anual contro

nsor values.

effective un

control of air

ement, Alarm

mory: Sudde

recover the

Accord to th

1, Change t

2, Operate t

stop.

Under keyp

Reduce fun

1, When the

2, When the

3, According

(Equal to ou

rter is under o

rter is slowing

rter is under st

rter is under in

rter is under co

rter is under co

n panel contro

s or serial com

rror alarm. (O

rter output cur

ustrial applic

.

iom: Compre

imum runnin

val time and

om: High pre

alarm.

c heating eq

e humidifying

ol function: E

Under man

nder power o

r-return port.

m record fun

enly power o

operation st

he function cod

the operating d

the inverter to

ad control sta

ction code or

e inverter unde

e inverter unde

g to the functio

uter error inpu

perating or jog

down to stop

top status.

nversion status

orotation-inve

orotation statu

ol status. (Loca

mmunication p

Over-current, o

rrent and bus v

cation enviro

essor was a

ng time, Min

operate pow

essure load

quipments, a

g equipmen

Equipment ca

nual control s

off. Under m

.

nction.

off, the syste

tate before p

de to carry ou

direction of inv

o under the jog

ate, this button

data.

er normal ope

er error status

on code to ca

t.)

Instructions

g status.

.

s.

rsion transitio

us.

al control)

port control sta

ver pressure.)

voltage norma

onment temp

as simple on

nimum closin

wer control t

alarm, low p

at most to th

t.

an be manu

state, it only

manual contr

em has a me

power-off.

M

t one of the fo

verter.

g status, loose

will operate t

ration, stop th

s, reset the err

rry out emerge

s

n.

atus.

)

ally.

perature and

and off load

ng time, in th

the shortest

pressure ala

ree electric

ally controlle

y responds th

ol, it can not

emory functi

MCAC-PDSM

ollowing functi

en the key then

the inverter.

he inverter ope

ror.

ency stop func

d humidity: T

d managem

he same co

t delay time.

arm compres

heating pow

ed, and not

he safety al

t be started.

ion, the syst

M-2013-01

ons:

n jog will

eration.

ctiom.

Temperature

ent.

mpressor

ssiom

wer energy

affect by the

arm. Manua

.

tem

e

e

al

MCAC-PDSM

5. Opera

5.1 Tempe

Press S

humidit

5.2 Query

Press t

buttons

M-2013-04

ation

erature/hu

Set in men

ty setting po

y function

the Statu bu

s to turn ove

umidity se

u, directly e

oint (S1).

for key co

utton, direct

er pages for

t point se

enter the us

omponent

tly enter wit

query. Conte

Midea

etting func

ser without

ts operatin

thout passw

ents can be

a Precision AC

ction

password,

ng status

word. Enter t

checked as

Technical Ma

and can ch

to the interfa

s following:

anual-Down D

hange temp

ace, use Up

elivery Series

65

perature and

p and Down

5

d

n

Midea Precisi

66

Note:

Interface

on AC Technic

es of Ig, Ih, Ii a

cal Manual

and Ij display

y the humidif

fier operating

g status.

MMCAC-PDSM

M-2013-01

MCAC-PDSM

5.3 Settin

Pre

Note:

Use

Pre

us

M-2013-04

g function

ess the Prg

er password

ess enter b

e Up and D

n of using

button in m

is 0002.

button to ent

own to adju

paramete

menu, it need

ter the temp

ust the param

Midea

ers

d password t

perature and

meters settin

a Precision AC

to enter:

d humidity s

ng:

Technical Ma

set point for

anual-Down D

parameters

elivery Series

67

s setting and

7

d

Midea Precisi

68

Notes:

Int

Int

Int

Int

Int

5.4 Mainte

Press the M

Ch

Op

Ch

It

int

on AC Technic

terface P1 to

terface P2, P3

terface P5 for

terface P8, P9

terface from P

enance ma

Maintenance

heck the soft

perating time

heck the hist

must throug

erface A4 to

cal Manual

set the temp

3 and P4 to s

r some speci

9 to set temp

Pb to Pj for a

anagemen

e button, and

tware versio

e of hardwa

tory alarm re

gh interface

o A6.

erature settin

et the deviati

al functions a

erature and h

alarm selectio

nt

d enter the f

on and syste

re devices:

ecords and c

e A5 enter t

ng range.

ion and dead

activation.

humidity alar

on.

following int

em informati

change dev

to A6. Afte

d zone.

rm.

erface.

on:

ice operatin

r enter into

M

g time:

the interfa

MCAC-PDSM

ace, it can d

M-2013-01

directly from

m

MCAC-PDSM

Notes:

Ple

Ke

Up

sys

Pro

Ch

5.5 Clock

Press

controll

M-2013-04

ease contact

eep pressing

p button to

stem.

obe calibrat

hange the m

managem

Clock butto

ler:

manufacture

g Down butt

type in pas

ion:

maintenance

ment

on, and en

e for mainten

ton, the disp

ssword, and

password:

ter to the f

Midea

ance passwo

play screen

d then do th

following in

a Precision AC

ord.

will pop up

he calibratio

terface, and

Technical Ma

Type in mai

on setting of

d change t

anual-Down D

intenance p

f relative pa

the system

elivery Series

69

assword. By

arameters in

time of the

9

y

n

e

Midea Precisi

70

Press D

to ente

only the

If it is n

energy,

days in

manua

on AC Technic

Down button

r K2 interfac

e correspon

not need the

, then it can

a week to b

l every day.

cal Manual

n, enter to K

ce, then can

ding control

unit to be o

set (interfac

be different t

Interface Ka

K1 interface

n use the rela

function se

operated in s

ce K3, K4) t

time zone fo

Ka to change

and type in

ative functio

elected Yes t

some period

to carry out t

or controlling

e the clock p

clock mana

ons of time z

then can do

s of a day, a

timer on and

g (interface K

assword.

M

gement pas

zone control

the follow u

and want to

d off the unit

K5), which c

MCAC-PDSM

ssword 002.

. In K2 inter

up detailed s

close the un

t, and it also

can realize n

M-2013-01

Press ente

rface there

setting.

nit to save

o can set 7

not control by

r

y

MCAC-PDSM

6. Netwo

Manua

and rea

operato

The ma

disconn

the ma

Group c

controll

1~32. A

1, then

with the

named

A contr

kinds o

their co

1. Spe

2. Sha

As the

controll

manua

special

shifting

informa

also ca

M-2013-04

ork func

l operator an

alize the dat

or can only d

anual operat

nected or br

nual operato

control netw

lers and ma

Address 32 i

the main un

e address 9~

from 1 to 3

roller can ma

of manual op

orresponding

ecial (Pr), on

are (Sh), ca

following pic

ler 1 can up

l operator, m

manual ope

g (U:01>U:02

ation, their s

an control the

ction int

nd controler

ta and inform

display infor

tor was used

roken down,

or.

work maxima

nual operato

is only assig

nit can only

~31 will not

1 can accep

aximal mana

perator at the

g controllers

nly display t

n shift more

cture shown

date the dis

meanwhile, t

erator. To pr

2>U:03>U:0

pecial manu

e share man

troductio

r can be con

mation comm

rmation of on

d in the basi

and then ea

al connect 3

ors. Each de

gned to ghe

group contro

control by th

pt the contro

ages 3 manu

e same time

s synchronou

he output of

e than one co

n, one share

splay date of

the other two

ress the Que

01…). When

ual operator

nual operato

Midea

on

nnected toge

munication a

ne controller

ic paramter

ach controlle

2 devicesw

evice has th

manual ope

ol the units w

he main unit

ol of the shar

ual operator

e. Three ma

usly, and the

f this contro

ontrollers by

manual ope

f the share m

o controllers

ery button of

address 2 a

will produce

or and produ

a Precision AC

ether by RS4

and group co

r in once.

setting, if on

er will keep

(terminal), a

he only ident

erator, and th

with the con

t, and keep

re manual o

rs at the sam

nual operato

e correspon

ller.

y pressing th

erator linked

manual oper

s will continu

f the share m

and address

e the alarm

uce alarm in

Technical Ma

485 network

ontrol functio

ne or more m

normal oper

and these de

tified addres

he controller

ntroller addre

their single

perator.

me time, but

ors can upda

ding relation

he Query bu

d with three c

rator and ac

ue to update

manual oper

s 3 controlle

information,

formation.

anual-Down D

k, to make u

ons. The ma

manual ope

ration, no in

evices includ

ss, the addre

r address m

ess 2~8, and

operation st

t can not ma

ate the infor

n:

utton.

controllers,

ccept input c

e the display

rator for circ

ers have alar

, and at the

elivery Series

71

p the LAN,

anual

rators be

fluence from

de

ess range is

ust be set to

d the units

tate. Units

anage two

rmation of

and only

command of

y data of the

culated

rm

same time

1

m

o

Midea Precisi

72

6.1 Group

Accord

Set the

Power

at the s

follow:

Press e

operato

Press e

on AC Technic

p control n

ing to the pr

e manual ope

on the contr

same time fo

enter button

or address to

enter button

cal Manual

network se

revious pictu

erator addre

roller, and w

or 5 seconds

n to move the

o be 00.

n to confirm t

etting

ure, an exam

ess of the de

wait the contr

s to enter th

e cursor to t

the manual

mple of how

evice 2 to be

roller finish o

e configurat

the 32 field,

operator ad

to set group

e 0.

operation. P

tion mode, t

and press U

dress chang

M

p control net

Press Up, Do

he manual o

Up key to ch

ging.

MCAC-PDSM

twork will be

own and en

operator dis

hange the m

M-2013-01

e given.

nter buttons

play as

anual

MCAC-PDSM

Change

Cut off

controll

Press U

the follo

The ma

controll

Set the

Press U

mode, t

Press e

address

Press e

M-2013-04

e the contro

the controlle

lers.

Up and alar

owing interfa

anual operat

ler address

e manual ope

Up, Down a

the manual

enter to mov

s to be 31.

enter to con

ller address

er power an

m buttons a

ace then sto

tor will autom

to be 2, and

erator addre

and enter bo

operator dis

ve the cusor

firm the ma

of the devic

d the conne

at the same t

op pressing.

matically shi

d press ente

ess of the de

ottons at the

splay as follo

r to the 00 fi

nual operato

Midea

ce 2.

ections betw

time, and po

ift to the follo

er for confirm

evice 2 to be

same time

owing:

eld, and pre

or address c

a Precision AC

ween J11 por

ower on the

owing displa

mation.

e 31.

for at least 5

ess Down to

changing.

Technical Ma

rt on the con

controller, u

ay, press Up

5 seconds to

o change the

anual-Down D

ntroller and o

until the scre

p button to s

o enter the c

e manual op

elivery Series

73

other

een display

set the

configuration

perator

3

n

Midea Precisi

74

Configu

Press U

mode, t

Press e

Press e

operato

of man

manua

Notes:

P:

Trm

Trm

Trm

So the

manua

After se

on AC Technic

ure the corre

Up, Down a

the manual

enter button

enter to ente

or, press Up

ual operator

l operator di

02 means th

m1: 31 Pr me

operater

m2: 32 Sh me

operator

m3: None ---

controller w

l operator ad

etting, press

cal Manual

esponding re

and enter bu

operator dis

n 3 times, the

er the config

p and Down

r and contro

isplay as fol

at controller

eans that man

1 and contol

eans manual

r 2 and contro

means opera

with the addre

ddress is 32

s enter to mo

elation of co

uttons at the

splay as follo

e screen dis

guring page

to select the

ller. Use ent

lowing.

address is 02

nual operator

ller 02 is spec

operator 2 ad

oller 02 is sha

ator 3 address

ess 02, it is

2.

ove the curs

ontroller and

same time

owing:

splay as follo

for correspo

e manual op

ter button to

2.

r 1 address is

cial.

ddress is 32,

are.

s is empty.

special man

sor to the No

the manual

for at least 5

owing.

onding relati

perator addr

o confirm the

s 31, the corre

the correspo

nual operato

o field, and c

M

l operator.

5 seconds to

on of contro

ress and the

e setting and

esponding re

onding relatio

or address is

change to b

MCAC-PDSM

o enter the c

oller and ma

e correspond

d move the

elation of man

on of manual

s 31, and the

be Yes by Do

M-2013-01

configuration

anual

ding relation

cursor, the

nual

e share

own button,

n

MCAC-PDSM

and the

Set the

Repeat

corresp

Operat

grop co

Press P

the curs

factory

Notes:

Co

Press e

Find the

select t

M-2013-04

en press ent

e manual ope

t same steps

ponding rela

ions of the m

ontrol functio

Program an

sor to the 00

configuratio

ontact manufa

enter to ente

e Co page b

the relative p

ter for confir

erator and c

s for device

ation as the f

manual oper

on.

nd menu but

000 field, an

on.

acture to get

er the interfa

by pressing

parameters

rmation, the

controller ad

3, and set t

following dis

rator (Addre

ttons togethe

nd type in pa

the factory p

ace of config

Down butto

by Down bu

Midea

n finish grou

dresses of d

the manual o

splay:

ess No.32) w

er to enter th

assword by U

password det

guration ma

on, and pres

utton.

a Precision AC

up control ne

device 3 and

operator and

which connec

he factory pa

Up button. P

tails.

nagement.

ss enter to c

Technical Ma

etwork confi

d set their co

d controller a

cted with de

assword pag

Press enter

onfirm the s

anual-Down D

iguration of

orrespondin

addresses.

evice 1, conf

ge. Press en

to confirm e

setting. Move

elivery Series

75

one device.

g relation.

Set the

figure the

nter to move

entering

e the cursor

5

e

r,

Midea Precisi

76

Press m

to the in

interfac

Then th

1. Con

Ma

to c

2. Ma

Wh

incr

3. Rot

Aut

eve

car

Run

this

Tim

We

two

4. Loa

The

tha

The

tha

on AC Technic

menu to exit

nterface of p

ce Gm by Do

he units ope

nflict manag

nage by the

competed op

in unit and b

hen there are

rease the re

tation type

tomatic rotat

ery 5 minuts

rry out result

nning hours

s rotation typ

mezones: Ro

ednesday, an

o rotation typ

ad adjustme

e absolute v

n 8°C, then

e absolute v

n 4°C, and t

cal Manual

t the interfac

parameter m

own button.

erate after se

gement

e main unit, a

perations.

backup unit

e errors in th

eliability of th

tion: The cu

will carry ou

t is the same

: Ratation a

pe ,it can no

otation as tim

nd set other

pes the G0 i

ent

value of diffe

it will opera

value of diffe

then it will c

ce of configu

management

etting, there

and carry ou

shifting

he units of th

he aire cond

rrent rotatio

ut one rotati

e as running

s hours (000

t set the rota

me zones, ca

two rotation

nterface will

erence betwe

te standby a

erence betwe

lose standby

uration man

t, then press

are several

ut cooling, h

he group, th

itioning syst

n time set to

on. The cur

g hours.

0~240h), ev

ation time to

arry out on r

n type the G

l not be disp

een ambient

after 3 minu

een ambient

y.

agement, an

s enter to co

functions:

eating, huid

e backup un

tem.

o be 0 hour,

rent rotation

very 24 hour

o be 0.

rotation as t

G0 interface w

played.

t temperatur

tes.

t temperatur

M

nd press Do

onfirm enter

ification and

nits will auto

is used to te

n time set to

s will carry o

he setting ho

will be displa

re and settin

re and settin

MCAC-PDSM

own to move

ring, and the

d dihumidific

omatically op

est the rotati

be none 0 h

out one rota

our 22:00 of

ayed, and se

ng temperat

ng temperat

M-2013-01

e the cursor

en find

cation, avoid

perate, to

ion condition

hour, the

tion, under

f every

elect other

ure is highe

ure is lower

d

n,

r

MCAC-PDSM

Wire fig

3-core

which h

of the c

Functio

Be

are

Aft

an

pow

Aft

sec

On

wh

Pre

sta

it w

wh

En

to

wh

Pre

tha

wh

sa

Se

op

M-2013-04

gure of contr

shielding wi

has polarity.

controller wir

onal verificat

efore verifyin

e noumal wh

ter configure

d their corre

wer for ever

ter the contr

conds, then

n the manua

hether shift t

ess on/off to

atus. Press o

will automati

hether the st

nter the Gn i

be 1, and ro

hether carry

ess set to e

an the ambie

hether will au

me as the a

et the param

erations.

roller in grou

re (large or

It needs to

res should b

tion for grou

ng the group

hen it is ope

e all the add

esponding re

ry units.

roller operat

can check t

al operator w

o differents

o operate al

on/off to clo

cally turn to

tandby units

nterface, ch

otation time

out a rotatio

nter tempera

ent tempera

utomatically

mbient temp

eters of Gn

up control ne

equal to 0.7

correctly co

be 500 mete

p control ne

p control netw

rating by sin

resses of m

elations, suc

ion, press D

the online st

with address

units as : U

l the units in

ose one of th

ben on stat

will back to

hoose the rot

set to be 0.

on every 5 m

ature/humid

ture 10°C, t

turn to be o

perature to c

interface an

Midea

etwork.

75mm2) is us

onnect Rx-/T

ers.

etwork.

work funcito

ngle (withou

manual opera

ccessively o

Down, Up an

tatus of con

No. 32, pres

U:01>U:02>U

n the networ

he operated

tus. And the

o standby sta

tation type t

Check whet

minutes.

dity setting in

then after 3

on status. An

check wheth

nd S1 interfa

a Precision AC

sed to conne

Tx-, Rx+/Tx+

on, it needs t

t shutting do

ator and con

perate main

nd enter key

nect devices

ss Query to

U:03>U:01…

k, to check w

units to che

en re-operate

atus.

to Automati

ther the unit

nterface S1,

minutes to c

nd then set t

her the stand

ace to be the

Technical Ma

ect the contr

+ and GND. T

to confirm a

own for erro

ntroller in the

n power, con

ys at the sam

s in the grou

check the U

….

whether the

eck the unde

e the unit jus

icn Rotation

ts are under

set the setti

check the un

the setting te

dby units wil

e values req

anual-Down D

roller and th

The maximu

all the netwo

or).

e group cont

ntroller powe

me time for

up controller

U:01 on the

units are un

er standby u

st closed to

n, the stand

r standby sta

ing tempera

nder standby

emperature

l back to sta

quired by the

elivery Series

77

he J11 port,

um distance

rking units

trol network

er and indoo

at least 10

r network.

M0 interface

nder standby

units whethe

check

by quantity

atus, and

ture to lowe

y units

to be the

andby status

e actual

7

e

or

e

y

r

er

s.

Midea Precisi

78

Cancel

Clo

an

Ch

ad

Ch

6.2 The et

TCP/IP

Th

Th

Th

SN

no

Ins

1.

2.

on AC Technic

group contr

ose the unit.

d other cont

hange the co

dresses to b

hange device

thernet co

P communica

is card can

e air conditi

e network d

NMP protoco

restriction.

stallation of t

The board

Switch off

cal Manual

rol network.

. Switch off t

trollers.

orresponding

be 01, and c

e 1 to C0 int

ommunica

ation card (E

provide netw

oner is direc

diagram of th

ol is shown a

the ethernet

of TCP/IP c

the main po

the controlle

g manual op

configure the

terface and

ation card

Ethernet com

work connec

ctly connect

heTCP/IP co

as following

t communica

card is insta

ower. Remov

er power and

perator addr

eir correspo

Gm interfac

introduct

mmuniction

ctor, and als

ted with the

ommunicatio

picture, and

ation

lled in the p

ve the cover

d the networ

ress of devic

nding relatio

ce as followin

ion

card)

o can view t

computer by

on card (Eth

d the connec

CO* control

r of card from

M

rk connectio

ce 2 and dev

on as followi

ng:

the data thro

y the ethern

ernet comm

cting quantit

ler.

m the pCO*

MCAC-PDSM

ons of contro

vice to be 32

ing:

ough the Inte

net commun

munication ca

ty of air cond

by a screwd

M-2013-01

oller J11 por

2, controller

ernet Eplore

ication card.

ard) by

ditioners are

driver.

rt

er.

.

e

MCAC-PDSM

3.

4.

5.

6.

RS485

RS

ne

R2

Th

co

M-2013-04

Insert the T

and in con

difficult du

angle and

Clos the co

connector

Stick one o

electrical p

For the co

communica

S485 commu

twork conne

232/R485 co

e network d

nnect maxim

TCP/IP card

ntact with the

e to the limit

then turn it

over again,

on the seria

or both labe

panel.

nnection to

ation card

unication ca

ector, and al

onverter.

diagram of R

mum 200 se

d in th corres

e two suppo

ted space, c

until aligning

using the co

al board with

l, so that the

the ethernet

rd is as sho

so can view

RS485 comm

ts air condit

Midea

sponding plu

rts located o

consequentl

g the conne

over supplie

h the openin

e MAC addr

t network, u

own in follow

w the data th

munication c

tioners, and

a Precision AC

ug-in connec

on the case

y, it is recom

ectors.

d with the b

ng in the cov

ress can be

se an S/FTP

wing picture.

rough the In

card is as sh

the longest

Technical Ma

ctor, making

of the pCO*

mmended to

oard of TCP

ver.

read withou

P cable, cate

The RS485

nternet Explo

own in follow

R485 conne

anual-Down D

g sure it is su

*. This opera

o insert the b

P/IP card, lin

ut needing to

egory 5e or

5 card also c

orer by conn

wing picture

ecting wire w

elivery Series

79

ully inserted

ation may be

board at an

ning up the

o open the

higher.

can provide

necting

e. It can

which use

9

d

e

Midea Precisi

80

sh

Ins

1.

2.

3.

4.

5.

on AC Technic

ielding cable

stallation of

Remove th

Remove th

will be fou

Insert the

placed on

Close the

hole made

The conne

cal Manual

e is 1000m.

RS485 card

he serial car

he pre-punc

nd.

optional car

bothe plasti

cover using

e on the cov

ection with

d

rd placemen

ctured plastic

rd into the c

ic supports o

the screwd

er.

the RS485

nt cover with

c, the hole w

correspondin

on the pCO

river making

network is

h a screwdriv

which corres

ng connecto

case.

g the outside

carried out

M

ve.

sponds to th

or, taking car

e card termin

t by means

MCAC-PDSM

he tree-pole

re that the c

nal fits with

of the plug

M-2013-01

terminal ou

card is firmly

the punched

g-in termina

ut

y

d

al


81

connector on the card.

6. There is a table of Pin-wiring of the connector stamped on the card.

Pin Significato meaning

1 GND

2 RX+/TX+

3 RX-/TX-

7. Maintenance

7.1 Electrical maintenance

According to the following items to check appearance of the electrical connections and do the relative

handlings. Before fastening any assembly connections and circuit connections, it must ensure that

the power supply of the control element has been closed.

The electrical insulation test: find out the unqualified contacts and handle them. During the rest

process, pay attention to disconnect the control part of the safety or air switch, to avoid high

voltage damaging the control panel.

Static detect the suction port of each contactor is flexible or not, and whether there is card

resistance.

Use a hairbrush or dry compressed air to clean dust for the electrical and control components.

Check the suction port of the contactor whether has arc discharge and burn mark phenomenon.

When it is serious change the corresponding contactor.

Tighten each electrical connecting terminal.

Check whether the plug-in quick connectors whether contact well, if there is any loose condition

it should be replace the terminal.

7.2 Control maintenance

According to the following items to do the appearance check, simple function test of the electrical

connections and do the relative handlings. Before fastening any assembly connections and circuit

connections, it must ensure that the power supply of the control element has been closed.

Check the appearance of the power transformer and isolated transformer, and detect the output

voltage of indoor unit and outdoor unit.

Detect the surfaces of control connector panel, display panel, sensor panel and safety panel

whether there has obvious ageing.

Clean the dust, dirt on the electric control elements and control panel by hairbrush with the

electronic cleaning agent.

Check and tighten control each input and output plug-in connector of the control connector panel,

including the connection of display panel and control connector panel as well as the connection

of the control connector panel and temperature/humidity sensor panel.

Check the connection of the wiring terminals (J10, 01/45, 01/47, 01/48, etc.) and controller

connector panel.

Midea Precisi

82

Ch

ele

ov

sc

hig

co

co

Ch

wir

Us

ca

hu

Ch

1.

2.

7.3 Filter s

To

req

po

loc

Sh

no

on AC Technic

heck the out

ectromagnet

erload prote

reen cloggin

gh/low press

nditions the

ntrol panel,

heck the con

re and the a

se temperatu

librate the

midity senso

heck the exte

Fireworks

Fireworks

top of the

return air s

Water leak

Water leak

of the swit

The senso

the unit ab

screen ma

ensure the

quirement. T

sitions in the

cations may

hut off the po

t need to re

cal Manual

tput connect

tic valve, an

ection devic

ng switch an

sure switch

en it should

electric com

ntrol wiring

ageing situat

ure and hum

reading of

or, pay atten

ernal senso

detector (If

detector is

lower air o

sample, and

kage detecti

kage detecti

tch detect th

or should be

bout 2 to 2.5

aintenanc

e reliable o

The positio

e following f

be different

ower before

eset the filter

tion between

nd the inpu

ce, high/low

nd air flow s

and electr

be replace

mponents wh

between the

tion, when n

midity measu

the tempera

ntion to sele

rs:

installed)

located on t

out unit. It c

d it does not

ng sensor

ng sensor c

he water (or

placed far a

5 meters. It s

e

operation, th

n of filter s

figure are for

t.

changing th

r screen clo

n the contro

t connection

pressure s

switch. It sh

romagnetic

ed immedia

hich have ex

e indoor un

necessary, re

uring instrum

ature and h

ect the humid

the wind pow

continually d

need to adj

contains a pa

other cond

away from th

shall not dire

he filter scr

screen clog

r reference o

he filter scree

ogging switch

ol connector

n between

switch, heat

hould be foc

valve, if the

tely. Replac

xisting probl

it and cond

eplace the w

ment with hi

humidity se

dity control w

wer base pa

does the ana

ust.

air of dry co

uctive liquid

he wet tray o

ectly install u

reen must b

ging switch

only, due to

en. If change

h, otherwise

M

panel to ea

the control

ing thermal

cusing on ch

ere appear

ce the contr

ems.

enser or the

wires.

gher measu

nsor. During

way to be re

anel of the u

alysis judgm

ntact switch

), this switch

or floor dewa

under the un

be monthly

and air flo

the different

e the same t

e, it needs to

MCAC-PDSM

ach contacto

connector

protection

hecking the

loose, poo

rol fuse (or

e specificati

uring precisi

g the calibr

elative humid

pper air out

ment through

h, and when

h is closed

atering plac

nit.

check and

ow switch.

t model, and

type of filter

o calibrate t

M-2013-01

or, liquid pipe

panel to fan

switch, filte

terminals o

or contacting

r air switch)

ion of powe

on to check

ration of the

dity control.

unit and the

h collect the

a pair probe

immediately

es, and from

d change as

The display

d the specific

screen, it do

he setting o

e

n

er

of

g

),

er

k,

e

e

e

e

y.

m

s

y

c

o

of


83

the filter screen clogging switch. The filter screen clogging switch is located in the electric control

box, and collect the large air pressure and filtered air pressure through the white soft hose, and

the filter screen clogging switch to compare the two pressure difference to judge the output.

When installs different type of filter screen, in order to accurately find emergency alarm, it must

install all the panel of the device in places and keep closed. Under the fan is operating, as the

anti-clockwise direction to rotate the setting knob of the filter screen clogging switch, to make the

switch contact the filter alarm, and then as clockwise direction to rotate the 100Pa deviation

pressure, and then install the plastic protective cover of the filter screen clogging switch in place.

Notes:

1. Setting point shall be appropriately, and can not deviate too much, or it will due to dirty filter screen

and cannot trigger the alarm, and then cause the small system air volume and lead to abnormal

operation of the system.

2. To change different type of the filter screen and adjust the setting, it should be confirmed by

manufacture.

7.4 Indoor fan components maintenance

Periodically check the fan components, including: belt, motor frame, fan bearing and impeller. The

motor and installation panel are integration design and use bolts to fix on the installation panel. After

a period of using, it should be check whether the bolts are loosened. If they are loosened, they should

be promptly tightened.

Fan bearing and impeller

It should be regularly check whether the fan and fan spindle are installed firmly or not. Turn the

fan impeller to make sure it cannot clash the scroll shell. Use the bearing of this component is

permanently sealed and self-help lubricated. During regulating the belt, it should be examined

for the attrition phenomenon. Turn the belt pulley to check the rotating condition of the fan

spindle. If it was found to have any big movement, then needs to replace the bearing.

Belt

Use the belt tension meter to detect the tightness of the belt. Or in the connection center of motor

wheel and fan wheel to tight the belt, it should has 1/2’~1’ displacement. If the belt is in damage

or deformation status, use the same type of belt for replacement.

Motor

When the motor appears abnormal sound, burned etc, factors to make invalidation, needs to be

changed, for upper air supply unit. It should pay special attention for safety. It must use special

tools to hold the motor and then dismantle fixed the bolt of motor base.

7.5 Humidifier maintenance

During the normal operation of the humidifier, articles such as mineral salt will gradually deposit and

form scales on the internal wall of the humidifier tank. These scales must be regularly cleared, which

can guarantee the efficient operation of humidifier. Because of different water qualities, the cleaning

time should be based on the local specific situations. It is suggested to check monthly.

Please do not use cleaning agent and solvents to clean the plastic components.

Use materials which contain 20% acetic acid to remove the scales and residue in the water.

Midea Precisi

84

Ins

Ma

1.

2.

3.

4.

5.

6.

on AC Technic

struction of t

Item

1

2

3

4

5

6

7

8

9

10

11

12

aintenance m

Humidifica

gloves bef

After broke

and check

brush for c

Check wh

impurities.

damage o

Disconnec

body, to re

Check the

conductivit

Check the

cal Manual

the steam hu

m

Support

Water s

Water in

Water in

Gasket

Straight-

Humidifi

Overflow

Water in

Water s

90o ang

Water d

methods

ation tank m

fore operatio

e off the con

k the status

cleaning the

hether there

Check the

r broken, re

ct the power

emove all the

water supp

ty probe is c

ese pipeline

umidifier com

frame

upply tank +

nlet flexible p

nlet solenoid

-water drain

ication locki

w pipe

nlet flexible p

upply conne

le water dra

rainage sole

may be hot,

on.

nnection of t

of the inlet

filter.

e are solid

seal O-shap

place it.

supply, and

e impurities

ly tank whet

clean or not,

s whether i

mponent pa

Nam

+ Conductivi

pipe of hum

d valve (24V

nage connec

ng belt

pipe of wate

ector (Conne

ainage bend

enoid valve

so firstly c

the cable an

filter. Check

adhesives

pe ring whet

d take down

and clean it

ther has any

, and remov

t was clear

arts which ne

me

ity meter

idification ta

V AC)

ctor

er supply tan

ect to humid

(24V AC)

cool the hu

nd pipes, dis

k whether it

in the hum

ther has bee

all the senso

t.

y obstacles o

e all the imp

red and no

M

eed to maint

ank

nk

ification tan

midification

mantling the

is necessar

midification

en damaged

ors, then uns

or solid parti

purities and

impurities.

MCAC-PDSM

tain.

nk.)

tank or us

e electromag

ry to use wa

tank, and

d or broken,

screw the bo

cles. Check

clean it.

If it has an

M-2013-01

se protection

gnetic valve

ater and sof

remove the

if it has any

olt and valve

k whether the

y impurities

n

e,

ft

e

y

e

e

s,

MCAC-PDSM

Dis

1.

2.

3.

4.

5.

6.

Cle

1.

2.

3.

4.

7.6 Electr

Check

accordi

combin

no heat

7.7 Refrig

It must

function

corresp

main m

should

every s

Each s

M-2013-04

remove all

sassembling

Press the

Close the

cap.

Take down

Break off t

Loosen the

According

humidifica

ean the hum

Take down

screws of

Take off th

humidifica

Place the

loose, and

After clean

the connec

ical heatin

the rust sit

ing to the

nation has ta

ting effect, t

geration sy

t monthly c

n is norma

ponding erro

measure to p

not rely on

six months, m

system is eq

l the impurit

g the humidi

Manual dra

unit, and sw

n the steam

the electrica

e fastening d

to the reve

tion.

midification ta

n the humidi

the clamp in

he fixed clam

tion tank.

humidificati

d wash away

ning, install t

cting clamp.

ng compo

tuation of e

situation fo

andem conn

then it shoul

ystem

heck the co

al and has

ors before t

prevent most

the ceiling,

make sure w

quipped wit

ies and rinse

fication tank

ainage butto

witch off the p

pipe from to

l wirings fro

devices of h

erse order o

ank

ification tank

n the middle

mp, and ver

on tank cor

y all the scal

the humidific

.

onents

electrical hea

or replacem

nect two tem

d check whe

omponents

any sign o

he compon

t system fail

floor and fi

whether they

h a liquid s

Midea

e off.

k

on to empty

power suppl

op of the hum

m the top of

humidificatio

of above ste

k, and use c

e of humidific

rtically take

re body into

les carefully

cation tank c

ating compo

ment. The in

mperature sw

ether the tem

of the refrig

of wear or

ents fail or

lures. Refrig

ixed frame v

y were worn

sight glass f

a Precision AC

the water in

le for safety

midification

f the humidif

on tank, then

eps to insta

cross-screwd

cation tank.

out the hum

acetum wit

y by a soft ha

core back to

onents, and

nternal circu

witches. Whe

mperature s

geration sys

not. For i

devices da

gerant pipe m

vibration pla

or the exist

for observin

Technical Ma

humidificat

operation. O

tank.

fication tank

n lift it and ta

ll a new hu

driver to scr

midification t

th 20% dens

airbrush.

o the humidi

d use iron b

uit of the e

en there is h

witches hav

stem, to vie

t was often

mage, so re

must have th

ace. Check t

ed fixing stru

ng liquid ref

anual-Down D

tion tank.

Open and ta

k.

ake it down.

midification

rew open the

tank core bo

sity, waiting

fication tank

brush for d

electric hea

heating dem

ve been rese

ew whether

n accompa

egular inspe

he suitable

the refrigera

ucture has l

frigerant flow

elivery Series

85

ake down the

tank on the

e connecting

ody from the

for scale to

k, and fasten

e-rusting, o

ting interna

mand but has

et.

the system

nied by the

ection is the

bracket, and

ants pipeline

oosen or no

w and wate

5

e

e

g

e

o

n

or

al

s

m

e

e

d

e

ot.

er


86

situation of the system. When the water content of system is more than the standard, the liquid sight

glass basic color will change from green to yellow. When the refrigeration system has malfunction,

judge the error according to some operating parameters of the system.

When the suction pressure drops to below the set value of low pressure switch, it could lead to

the compressor stops. On the other aspect, high suction pressure also can be reduced to cool

the compressor motor, which may cause compressor damage.

Discharge pressure may be increased or decreased for the load conditions or the efficiency of

the condenser. When the discharge pressure reaches the setting value of the low pressure

switch, the high voltage switch action will make the compressor stop.

Thermal expansion valve can adjust the suction overheat degree. The suction overheat degree

has great influence for the using life of compressor, if the compressor operates on the situations

of too small or no suction overheat degree for long time, it may be directly led to compressor

produced liquid strike, which will crush the scroll compressor. Follow the below operations to

confirm the suction overheat degree of system:

1. Measure the suction wall temperature in the thermal expansion valve temperature sensing

position.

2. Take the compressor suction pressure sample from the needle valve of suction pipe.

3. Estimate the pressure difference between the temperature sensing position and the needle

valve of suction pipe.

4. The sum total of above two pressure plus one local standard atmospheric pressure value,

then find out the corresponding saturated temperature of the saturation pressure.

5. The suction overheat degree is the difference of the suction temperature and this saturated

temperature.

7.8 Compressor monitoring and replacement

This precision air conditioning system uses high efficient scroll compressor, which has high reliability.

If the project construction strictly accord with the correct program operations, then the probability of

failure which appears in operation process is very small.

If the problems which may result in compressor error can be early detected and corrected, then

most of the compressor errors can be avoided. So it is suggested that customer should regularly

contact the service of manufacture to do compressor operation state test, and do the monitoring

records.

During the compressor monitoring, check whether all electrical components of compressor are

running normally.

1. Check whether the corresponding air switches and contactor of the compressor are sensitive

and normal.

2. Check whether the high and low pressure switches are sensitive and normal.

3. Check whether the upper discharge temperature switch of the compressor has been fixed

reliably and done the thermal insulation.

4. Check whether the compressor wiring terminals resistance value is normal and the

grounding insulation is normal.

If for neglecting the inspection or other reasons to cause the compressor error, then before

changing the compressor it must be carefully do the fault analysis, the common errors mainly to

be the following two aspect:


87

1. Mechanical error

The mechanical error of compressor is mostly because that during the installation process it

is not strictly accorded to the operation guidelines, and the system refrigerant leakage and

improper trial run in the process of the construction and operation, and then cause the

compressor return liquid operation in long term.

Under such cases can lead to the compressor internal temperature over high, and

mechanical error including in the scroll badly worn, scroll jammed, and so on. For external

performance, the motor inside compressor resistance may be normal, but large noise will be

produced after the compressor start. When the error compressor starts, the pressure

difference between compressor suction and discharge ports is zero. If it is confirmed that

there are mechanical errors, then it must to replace the compressor.

2. Electrical error

The compressor electrical error mainly is that the compressor was burned and the wiring

terminals are blew out. Under this case, after power on the compressor, compressor still is

without any response. At this time, it should cut off the electricity, and then open the

compressor wiring box for visual inspection or using a multimeter to check the compressor

resistance. If there is any electrical error, it is necessary to change the compressor.

When compressor happens to completed burned, replace compressor and it also should be

replace drier-filter, and check the expansion valve. If there is any error, it also should be replaced.

Before the replacement, clean the system is necessary by right method. When changing the

compressor the skin must be avoided to directly contact with the refrigerant or lubricating oil,

otherwise it will cause severe frostbiting the skin, and it must wear protective gloves for handling

the contaminated components. After replace the compressor it must do serious analysis and

exclusion of the compressor error reasons, otherwise it may lead the new compressor to be

burned again.

1. Cut off the power supply.

2. Separate insert the suction pipe needle valve and discharge needle valve on the low

pressure and high pressure connectors of the pressure gauge, and to release the refrigerant.

3. Disconnect the electrical connection of the compressor.

4. Loosen the threading connectors in the suction pipe and discharge pipe of the compressor.

5. Remove the error compressor.

6. If the compressor was completely burned, it should clean the refrigeration system pipelines,

and replace the drier-filter and liquid sight glass.

7. Install the new compressor in place, and connect the pipeline connectors and electrical

circuit well.

8. According to the requirements of the debugging to vacuum the system and add refrigerant.

9. As the normal trial run to power on the system, check whether the system operation

parameters are normal. Through the liquid sight glass to observe the refrigerant status, and

combining with the system pressure and temperature parameters to confirm the adding

amount of refrigerant, until the system runs normally.

7.9 Outdoor fan maintenance

Check whether the fan operates normally, noisily, vibrates or blocks the bearing, etc.


88

8. Trouble shooting

When the system is suddenly having a demand, but there is a failure or invalidation which led to

non-workable, and then it cannot meet environmental needs. So it is necessary to periodically do the

functional test for the system components. Controller provides field manual opening and closing

function for all parts, and use for self-detecting the functional components’ states of the system.

Detailed operations can be checked by system self-diagnostic function.

During the device operation, the internal unit may have a deadly high voltage. It only allow

specialized technical person to do the unit maintenance operation, and must be especially careful

during the troubleshooting with electricity.

Common faults and handling methods of indoor fan

Symptom Probable reason Check items or handling methods

Fan no

working

No main power supply Check the voltage between A, B, C.

Overload, air switch is broken off Manual reset, check the average current value.

Contactor cannot contact together

Check whether has 24V AC voltage between 28

and 03. (Wire numbers) If it has, then the

contactor has error, change it.

Control panel error Check whether has 24V AC voltage between 28

and 03. If not, the control panel has error.

Air flow lost switch alarm (activate)

Check whether the belt has loosened or fan motor

has error, if not, then check whether the air flow

collecting plastic pip has abnormal position.

Fan error. Replace it.

Common faults and handling methods of dehumidification system


No

dehumidification

effect

System does not require carrying out dehumidification. Check the control system status.

Contactor of compressor cannot contact together. Refers to refrigerant system

handling methods.

Compressor does not operate, the air switch broke off. Check the air switch, contacting

points, check the air switch

voltage.

Dehumidification solenoid valve error

1, Check whether has 24V

voltage between wire 33 and wire

03.

2, Check whether reliable installs

the wires and valves.


89

Common faults and handling methods of humidification system


No

humidification

effect

No water filling in the humidification tank

or low filling water pressure.

Check the water source.

Check the water inlet solenoid valve is open.

Check whether the water inlet pipe has blocked.

No humidification requirement. Check manual operator.

No 24V AC input at controlling sire side of

humidification contactor.

Controller error.

Wiring from controller to the humidification

contactor controlling wire port is loose.

Common faults and handling methods of heating system


Heating system does not operates,

contactor do not contact together.

No heating requirement. Check the controller status.

Heating temperature controller is

broken off and not reset.

1. Wait for the controller reset.

2. Change a new controller.

The contactor contacted together,

but no heating effect. Heater error.

Turn off the power, check the

heating pipe and wire.

Common faults and handling methods of refrigeration system


Compressor

cannot run.

Power off. (Off the unit.) Check the main power switch, fuse and

connecting wires.

Power overload and the air switch broke off. Manual reset, check the current and air switch.

Electrical circuit connection is loose. Fasten the connection.

Compressor wire circuit has burnt. Check the compressor terminal.

The built-in protector of compressor has

broken off.

Check whether the compressor wire circuit is

open. If open, cool down the protector, then

automatically reset.


Compressor

cannot run.

Power off. (Off the unit.) Check the main power switch, fuse and

connecting wires.

Power overload and the air switch broke off. Manual reset, check the current and air switch.

Electrical circuit connection is loose. Fasten the connection.

Compressor wire circuit has burnt. Check the compressor terminal.

The built-in protector of compressor has

broken off.

Check whether the compressor wire circuit is

open. If open, cool down the protector, then

automatically reset.

The contactor cannot contact together. No

24V voltage input for the compressor control

wires. Or not reach the operating conditions

of compressor.

Check the manual operator parameters setting

correct or not. Check whether the controller is

error, or wiring from controller to compressor

port is loose.


90


Air suction and

exhausting pressure

have no difference

after operation.

Reverse the compressor or inner air

mixed up.

When the compressor was reversed, change

any two L wires. Inner air mixed up, change

the compressor, Check the leakage and

maintain, and add refrigerant, change the

drier-filter.


High air exhausting

temperature

Refrigerant leakage. Check whether the leakage and maintain, and

add refrigerant.


High air exhausting

pressure

Condenser has been blocked. Clean the condenser.

Condenser fan cannot run.

1, Check the wiring was correct or not.

2, Check whether it has 3~10V DC between

wire 22 and wire 05. If has, the outdoor

inverter is error. And if no, check the indoor

unit controller.

Too much refrigerant adding amount. Fasten the connection.


Low air

suction

pressure or

return liquid.

Lack of refrigerant in system. Check the leakage and maintain, add

refrigerant.

Air filter too dirty Change the air filter.

Drier-filter is blocked. Change the drier-filter.

Non-correct overheat adjustment Strictly accord to the adjustment steps to

adjust the thermal expansion valve.

Expansion valve error.

1, Check the temperature sensor and the

balance pipe whether have leakage.

2, Check the expansion valve whether has

serious frosting.

Condensed pressure too low Check the fan operates normally or not.

Belt creep Check the belt and adjust it.


Large

compressor

noise.

Return liquid. Refers to Low air suction pressure or return

liquid.

Lubricating oil lost and cause bearing

damaged.

Add the lubricating oil.

Compressor or pipe line is loose. Fasten the connection.

Common faults and handling methods of outdoor fan system

Both error and alarm are the abnormal working states of inverter. But there are different. Inverter

will self-check during operation. If there is error, the inverter will display error code, and cut off


91

the inverter output to stop the motor and make it stay free running condition. If there is alarm, the

inverter will display alarm code, and will not cut off the inverter output during alarm state, the

motor still be controlled by the inverter.

Many methods of inverter error reset: Press the Reset button in keypad of inverter, reset function

of terminals, or if necessary, power off the main power for a while then can reset the error. If error

has been solved, the inverter will recover to normal operation. If error still not has been solved,

the inverter will trip out again.

The alarm reset of inverter only effect by operate the Esc button in keypad of inverter.

When no display after power on:

1. Use the multimeter to check whether input power of inverter is same as the rated voltage.

2. Check whether the Charge lamp whether lights up.

3. If the above are normal, then maybe the power switch has error.

When the inverter does not run after the motor operation:

Cut off the connecting wire between inverter and motor, operate the inverter in 50Hz, and use

multimeter to check whether there is equivalent AC between U, V and W. Use simulate voltage

meter for measurement (the range is AC500V). If there is not equivalent voltage or no voltage,

then the inverter had been damaged.

Notes:

Between U, V and W are high –frequency impulse.

Code Type Error reason Solutions

E001

Over current error, current is

higher than 150% of

Maximum current.

Speed up and down times too

short. Extend the speed up and down time.

The inverter power is too small Select a large power inverter.

Voltage is too low. Check the input voltage.

E002 Power module error

Speed up and down time is too

short. Extend the speed up and down time.

The inverter output side is short

circuit. Check the insulation of motor.

Power module is damaged Replace the module.

Outer disturb. Find out disturb and eliminate it.

E003 Bus overvoltage error, the

value is more than 570V.

Speed down time is too short,

regenerated energy too large. Extend the speed down time.

Voltage is too high. Check the input voltage.

Load inertia is too large,

regenerated energy too large. Select a large power inverter.

E004 Bus voltage error, the value

is less than 171V. Voltage of power supply is too low. Check the input voltage.

E005

Motor load error, the motor

current is higher than

standard inverter current.

Voltage is too low. Check the input voltage.

Load inertia is too large. Check the load inertia, adjust torque

lifting capacity.

Not correct standard current setting

of motor. Reset the standard current of motor.


92

The inverter power is too small. Select a large power inverter.

E006

Inverter overheat error, the

temperature is higher than

90°C.

Ambient temperature is too high. Check the ambient temperature.

Ventilation of inverter is not well. Improve the ventilation environment.

Cooling fan error. Check the cooling fan work or not.

Temperature detection circuit error. Replace the detection.

E007 Soft start error Soft start circuit or contactor is

damage. Replace soft start.

E009 Output with lack of phase

error

Current of 3-phase output side is

asymmetric

Check the output connecting wire and

motor insulation.

E010 Out device error

Out error signal input terminal

activates. Check the outer error reason.

The stop key is set to be

emergency stop. Check the stop key.

E012 Current detection circuit

error

Current detecting components are

damaged. Replace the detection.

E013 EEprom read and write error

Control panel components of

inverter are damaged. Change the inverter

Outer disturb. Find out disturb and eliminate it.

E015 CPU disturb error Outer disturb Find out disturb and eliminate it.

E030 Error alarm This is an alarm; the inverter output

will not stop. Press Esc key to exit the alarm status.

MCAC-PDSM

9. Acces

Indoor unit

User’s m

Installatio

leakage

Switch p

Door key

Outdoor un

User’s m

Bottom c

Screws c

M-2013-04

ssories

t

Name

manual of ind

on frame

sensor

panel compon

y

nit

Name

manual of out

components

components

oor unit

for water

nent

tdoor unit

Quantity

1

1

1

1

Quantity

1

4

24

Midea

Shape

Shape

a Precision AC

e

(Place

e

For ho

For ho

Technical Ma

ed on the do

orizontal inst

orizontal inst

anual-Down D

oor plate.)

tall

tall

elivery Series

93

3


94

Annex I: Alarm table

Alarm display Result Probable reason

Low pressure compressor 1 Switch off the compressor 1.10s after the low pressure switch is trigged.

Lose of airflow (Serious Alarm) UNIT OFF Switch off the unit 10s after the airflow switch from close to open.

Main fan overload(Serious Alarm) UNIT OFF Switch off the unit Indoor fan motor protector acts.

EL heater1 overload Switch off the E-heater 1 The overload protector of E-heat 1 acts.

EL heater2 overload Switch off the E-heater 2 The overload protector of E-heat 1 acts.

Fire / Smoke detected(Serious Alarm) UNIT OFF

Switch off the unit Fire/smoke protector acts.

Power alarm Switch off the unit Phase sequence protector is trigged.

High room temperature It keeps 10s after difference between Ta and Ts is higher than design value. The unit will alarm.

Low room temperature It keeps 10s after difference between Ta and Ts is lower than design value. The unit will alarm.

High room humidity It keeps 10s after difference between Ha and Hs is higher than design value. The unit will alarm.

Low room humidity It keeps 10s after difference between Ha and Hs is lower than design value. The unit will alarm.

Operating hour threshold reached for compressor 1

Only remind, need to cancel alarm.

Operating hour threshold reached for mail fan


Room temperature probe faulty or disconnected

Switch off E-heater and compressor

a、 When Ta is lower than -30°C and keeping 60s, alarms and switches off all the E-heater. When Ta is lower than 50°C, 999.9°C will be displayed.

b、 When Ta is higher than 80°C and keeping 60s, alarm and switch off compressor. When Ta is higher than 95°C, 999.9°C will be displayed.

Supply temperature probe faulty or disconnected

a、 When Ts is lower than -30°C and keeps 60s, unit will alarm. When Ts is lower than -50°C, -999.9°C will be displayed.

b、 When the supply air temperature is higher than 80°C and keeps 60s, unit will alarm. When it is higher than 95°C, 999.9°C will be displayed.

Room humidity probe faulty or disconnected Switch off humidifier and compressor

a、 When Ha is lower than 5% and it keeps 60s, unit will alarm and switch off humidifier.

b、 When Ha is higher than 90% and it keeps 60s, unit will alarm and switch off compressor.

Condenser 1 pressure probe faulty or disconnected

Switch off compressor

a. When discharge pressure displayed is lower than -3.4bar and it keeps 60s, the unit will alarm.

b. When discharge pressure displayed is higher than 37.4bar and it keeps 60s, unit will alarm.


95

Built-in humidifier: high current Switch off humidifier Actual current of humidifier is 130% higher than standard current for long time.

Built-in humidifier: no water in the cylinder(cylinder off)

Switch off humidifier After water inlet valve is opened, actual current in humidification state cannot reach current of evaporating.

Built-in humidifier: low current Switch off humidifier Conductivity of water inside humidifier is lower than 75μS/cm.

High pressure compressor 1 thermal overload

Switch off compressor 1 Discharge pressure 1 is higher than top limit of pressure sensor.

High pressure + compressor 1 thermal overload

Switch off compressor 1 Pressure protection of compressor 1 is trigged.

Operating hour threshold reached for humidifier


Clogged filter When sensor of filter is trigged and it keeps 10s, unit alarms.

Water under floor(Serious Alarm) Switch off unit Water leakage sensor is trigged.

pLAN disconnected

a. When unit from address U2 to U8 is disconnected from group and it keeps 60s, unit will alarms.

b. Controller of pLAN address (except address 1/0) is disconnected with controller of address 1 and it keeps 60s, unit alarms.

Built-in humidifier: high conductivity alarm Switch off humidifier Conductivity of water inside humidifier is higher than 2000μS/cm.

Built-in humidifier: high conductivity pre-alarm

Conductivity of water inside humidifier is higher than 1500μS/cm.

Built-in humidifier: low steam production Switch off humidifier

Built-in humidifier: water drain alarm(cylinder off）

Switch off humidifier After water outlet valve opened, operates with high current in humidification state.

Built-in humidifier: cylinder full alarm(cylinder off)

Switch off humidifier Non-humidification, the sensor of water level is trigged.

Built-in humidifier: cylinder being depleted signal

Humidifier should be maintained.

Built-in humidifier: presence of foam Foam produce because of alkalescency water inside humidifier.

Built-in humidifier: cylinder depleted Humidifier should be maintained.

Built-in humidifier: compulsory maintenance alarm Cylinder 1

Humidifier already works for 10000h.

Built-in humidifier: recommended maintenance signal Cylinder 1

Humidifier already works for 2000h. It should be maintained.

Note:

Ambient temperature: Ta

Setting temperature: Ts

Ambient relative humidity: Ha

Setting relative humidity: Hs

Documents

Midea Precision Air Conditioner Technical Manual Ä Down ... · Midea Precision Air Conditioner Technical Manual Ä Down delivery series Å Midea reserves the right to discontinue,