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DELUXE HIGH WALL MINI SPLITSERVICE MANUAL
MODEL : HMC036KDT1HMH036KDT1
CAUTION
-BEFORE SERVICING THE UNIT, READ THE "SAFETYPRECAUTIONS" IN THIS MANUAL.-ONLY FOR AUTHORIZED SERVICE PERSONNEL.
International Comfort Products
2 MPS Multi Air Conditioner
Multi Air Conditioner Service Manual
TABLE OF CONTENTS
Safety Precautions......................................................................................................................................3
About MPS ...................................................................................................................................................7
Product Specifications ......................................................................................................................................8
Dimensions ........................................................................................................................................................10
Refrigeration Cycle Diagram .............................................................................................................................12
Wiring Diagram ...................................................................................................................................................13
Electronic Control Device ..................................................................................................................................14
Schematic Diagram ...........................................................................................................................................17
Functions ............................................................................................................................................................20
Operation Details................................................................................................................................................23
2-way, 3-way Valve..............................................................................................................................................30
Cycle Troubleshooting Guide............................................................................................................................34
Electronic Parts Troubleshooting Guide ..........................................................................................................35
Installation ..........................................................................................................................................................42
Operation ............................................................................................................................................................56
Disassembly of the parts (Indoor unit).............................................................................................................58
Exploded View and Replacement Parts List ....................................................................................................60
Service Manual 3
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions mustbe followed. Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
Meanings of symbol used in this manual are as shown below.
WARNING
CAUTION
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
WARNING Installation
Be sure not to do.
Be sure to follow the instruction.
Do not use a defective orunderrated circuit breaker.Use this appliance on a dedi-cated circuit.
• There is risk of fire or electric shock.
Do not let the air conditionerrun for a long time when thehumidity is very high and adoor or a window is left open.
• Moisture may condense and wet ordamage furniture.
Always ground the product.
• There is risk of fire or electric shock.
Install the panel and the coverof control box securely.
• There is risk of fire or electric shock.
Always install a dedicated cir-cuit and breaker.
• Improper wiring or installation maycause fire or electric shock
Use the correctly rated break-er or fuse.
• There is risk of fire or electric shock.
4 MPS Multi Air Conditioner
Safety Precautions
Operational
Do not modify or extend thepower cable.
• There is risk of fire or electric shock.
Do not install, remove, or re-install the unit by yourself(customer).
• There is risk of fire, electric shock,explosion, or injury.
Be cautious when unpackingand installing the product.
• Sharp edges could cause injury. Beespecially careful of the case edgesand the fins on the condenser andevaporator.
For installation, always con-tact the dealer or anAuthorized Service Center.
• There is risk of fire, electric shock,explosion, or injury.
Do not install the product on adefective installation stand.
• It may cause injury, accident, or dam-age to the product.
Be sure the installation areadoes not deteriorate with age.
• If the base collapses, the air condition-er could fall with it, causing propertydamage, product failure, and personalinjury.
Do not touch(operate) theproduct with wet hands.
• There is risk of fire or electrical shock.
Do not place a heater or otherappliances near the powercable.
• There is risk of fire and electric shock.
Do not allow water to run intoelectric parts.
• It may cause There is risk of fire, fail-ure of the product, or electric shock.
Service Manual 5
Safety Precautions
Do not open the inlet grille of the product dur-ing operation. (Do not touch the electrostaticfilter, if the unit is so equipped.)
• There is risk of physical injury, electric shock, or product fail-ure.
Be cautious that water could not enter theproduct.
• There is risk of fire, electric shock, or product damage.
Do not store or use flammable gas or com-bustibles near the product.
• There is risk of fire or failure of product.
If strange sounds, or smell or smoke comesfrom product. Turn the breaker off or discon-nect the power supply cable.
• There is risk of electric shock or fire.
Gasolin
6 MPS Multi Air Conditioner
Operational
Safety Precautions
Use two or more people to liftand transport the product.
• Avoid personal injury.
Use a soft cloth to clean. Donot use harsh detergents, sol-vents, etc.
• There is risk of fire, electric shock, ordamage to the plastic parts of the prod-uct.
Do not touch the metal partsof the product when removingthe air filter. They are verysharp!
• There is risk of personal injury.
Do not step on or put anyting on the product.(outdoor units)
• There is risk of personal injury and failure of product.
Do not insert hands or other objects throughthe air inlet or outlet while the product is oper-ated.
• There are sharp and moving parts that could cause personalinjury.
CAUTION Installation
Wax Thinner
check for gas (refrigerant)leakage after installation orrepair of product.
• Low refrigerant levels may cause fail-ure of product.
Install the drain hose toensure that water is drainedaway properly.
• A bad connection may cause waterleakage.
Keep level even wheninstalling the product.
• To avoid vibration or water leakage.
90˚
About MPS
About MPS
Conventional (On/Off Operation)
• During a Conventional Air Conditioning Cycle, the Compressor must turn on and off to reach desired Temperature setting.
• A large portion of power is used during Restart.This causes unnecessary power consumption.
27
25
23
21
19
00:05 0:10 0:15 0:20
Operation time (min)
Indo
or T
emp
(°C
)
ON OFF ON OFF
MPS
• MPS(Multi Power System) is a power saving system With Two rotary compressors of different capacity (60% & 40%) Operating an A/C at high power until it reaches desired temperature.
• And when it reaches the temperature, only the 40% Capacity rotary compressor operates.
27
25
23
21
19
00:05
100% operation 40% operation
0:10 0:15 0:20Operation time (min)
Indo
or T
emp
(°C
)
Service Manual 7
MPS (Multi Power System)
8 MPS Multi Air Conditioner
Product Specifications
Product Specifications
1. HMC036KDT1
34,200/36,000 22,800/24,000 11,400/12,000 208/230V
- - - -
3.6 2.4 1.2 at 230V
1Ø, 208/230V, 60Hz
Indoor – – 8
Outdoor 63
Indoor – – 40/38/36at 230V
Outdoor 54
4,020/4,020 2,530/2,530 1,340/1,340
– – –
17.9/17.9 11.6/11.6 5.9/5.9208/230V
– – –
8.5/8.9 9.0/9.5 8.5/8.9
– – –
Indoor 888x287x170
Outdoor 870 x 1060 x 320
Indoor 9
Outdoor 78
Liquid 6.35(1/4)
Gas 12.7(1/2)
2,500 – – at 7.5m
O
L.C.D Wireless
O
O
Operation2-Unit On 1-Unit On3-Unit On Remarks
UnitItem
Cooling Capacity
Heating Capacity
Moisture Removal /h
Power Source ø, V, Hz
Air Circulation /min
Noise Level dB(A)
Input W
A
E.E.R. Btu/h.w
C.O.P. -
Dimensions(W x H x D) mm
Net. Weight kg
Service Valve mm(Inch)
Refrigerant(R-22) g
Airflow Direction Control(Up & Down)
Remote Controller Type
Sleeping Operation
Drain Hose
Cooling
Heating
Cooling
Heating
Cooling
Heating
Runnig
Current
Btu/h(kcal/h)
( Hi / Med / Low )
Service Manual 9
Product Specifications
2. HMH036KDT1
34,600/36,000 23,040/24,000 11,500/12,000 208/230V
– – –
3.6 2.4 1.2 at 230V
1Ø, 208/230V, 60Hz
Indoor – – 8
Outdoor 63
Indoor – – 40/38/36at 230V
Outdoor 54
3,920/3,920 2,660/2,660 1,500/1,500
– – –
17.5/17.5 12.2/12.2 6.7/6.7208/230V
– – –
8.8/9.2 8.7/9.0 7.7/8
– – –
Indoor 888 x 287 x 170
Outdoor 870 x 1060 x 320
Indoor 9
Outdoor 78
Liquid 6.35(1/4)
Gas 9.52(3/8)
2,500 780 780 at 7.5m
O
L.C.D Wireless
O
O
Operation2-Unit On 1-Unit On3-Unit On Remarks
UnitItem
Cooling Capacity
Heating Capacity
Moisture Removal /h
Power Source ø, V, Hz
Air Circulation /min
Noise Level dB(A)
Input W
A
E.E.R. Btu/h.w
C.O.P. -
Dimensions(W x H x D) mm
Net. Weight kg
Service Valve mm(Inch)
Refrigerant(R-22) g
Airflow Direction Control(Up & Down)
Remote Controller Type
Sleeping Operation
Drain Hose
Cooling
Heating
Cooling
Heating
Cooling
Heating
Runnig
Current
Btu/h(kcal/h)
( Hi / Med / Low )
10 MPS Multi Air Conditioner
Dimensions
1. Indoor Unit
Dimensions
Installation plate
A
A
ø70mm
CenterCenter
ø70mm
Left rear piping Right rear piping
A
A
D
H
W
Tubing hole cover
W mm 888
H mm 287
D mm 170
HMC036KDT1, HMH036KDT1MODEL
DIM
Service Manual 11
Dimensions
2. Outdoor Unit
L6L7 L8L9
L4
H
L5
W
D L1
L3
L2
L10
L11L
11L1
1L1
1L1
1
Gas side3-way valve
Liquid side2-way valve
HMC036KDT1, HMH036KDT1MODEL
DIM
W mm 870
H mm 1038
D mm 320
L1 mm 360
L2 mm 340
L3 mm 25
L4 mm 1035
L5 mm 25
L6 mm 546
L7 mm 160
L8 mm 160
L9 mm 44
L10 mm 64.5
L11 mm 50
Indoor Side Outdoor Side
B A
4- WAY Valve
COMP BCOMP AA
ccum
.
C
Indoor Side Outdoor Side
B A
COMP BCOMP A
Acc
um.
C
ex)
Solenoid Valve
L.E.V
3-Way Valve
2-Way Valve
Capillary
12 MPS Multi Air Conditioner
Refrigeration Cycle Diagram
Refrigeration Cycle Diagram
1. HMH036KDT1
2. HMC036KDT1
Wiring Diagram
Service Manual 13
Wiring Diagram
Indoor Unit
Outdoor Unit
MOTOR
PILLARTERMINAL
STEPMOTOR
MAIN PCB ASSY
FORCEDOPERATIONAUTORESTART
REMOTECONTROL
THERMISTOR(OUT PIPE)
THERMISTOR(IN PIPE/AIR)
3854A24002C
CN
-MO
TOR
CN-DISP1
DISPLAY PCB ASSY
INDOOR WIRING DIAGRAM
TO OUTDOOR UNIT
C
RD BK BR BL
G V S
CN
-PO
WE
R
CN
-U/D
CN
-TH
1C
N-T
H2
SW
01F
COR
WH
WH
WH
RD
RD
BR
BR
BK
BK
BKYLBK
BK BK
WH
RDOR
OR
BLYL
RDBLYL
BK
BK
WH
WH
BL RD
YL
YL
GN/YL
CN-LEV(A) CN-LEV(B) CN-LEV(C)
CN-COM 1
CN-COM 2
CN-FAN
CN-RY_SV
CN-TH2
CN-POWER1 CN-POWER2
CN-COM 3
RY-COMP A 3 4
3 4RY-COMP B
F2(FUSE 250V T3.15A)
MAIN AC PCB ASSY
MAIN DC PCB ASSY
F1 : FUSE 250V 2.5ACo : CAPACITORTM.TB : TERMINAL BLOCKCN : CONNECTORRY : RELAY4WV : 4WAY VALVESV : SOLENOID VALVE
THERMISTOR(PIPE)THERMISTOR(AIR)
F1
F1
TOINDOORUNIT-A
POWERSUPPLY
1(L)
TM(POWER)
TM(PILLAR)
TB1
TB2
TB3
TB4
PR
PR
OLP
Co
CS
R
Co
Co
Co
6 8
2
0 1
4
H
C
F
H
C
F
LEVA
LEVB
LEVC
COMP-A
COMP-B
3854A24002D
FMo1
FMo2
OUTDOOR WIRING DIAGRAM
2(N)
BK
BK
BRBL
GVS
CRDTOINDOORUNIT-B
BKBRBL
GVS
CRDTOINDOORUNIT-C
BKBR
GN/YL
BL
GVS
F1
F1
F1
F1
CN-TH1THERMISTOR(DISCHARGE1)THERMISTOR(DISCHARGE2)
CS
R
COR
WH
WH
WH
RD
RD
BR
BR
BK
BK
BKYLBK
BK BK
WH
RDOR
OR
BLYL
RDBLYL
YLBK
BK
BK
WH
WH
BL RD
YL
BK
YL
YL
GN/YL
CN-COM 1
CN-COM 2
CN-FAN
CN-RY_SV
CN-TH2
CN-POWER1 CN-POWER2
CN-COM 3
RY-COMP A 3 4
3 4RY-COMP B
F2(FUSE 250V T3.15A)
MAIN AC PCB ASSY
MAIN DC PCB ASSY
F1 : FUSE 250V 2.5ACo : CAPACITORTM.TB : TERMINAL BLOCKCN : CONNECTORRY : RELAY4WV : 4WAY VALVESV : SOLENOID VALVE
THERMISTOR(PIPE)THERMISTOR(AIR)
F1
F1
TOINDOORUNIT-A
POWERSUPPLY
1(L)
TM(POWER)
TM(PILLAR)
TB1
TB2
TB3
TB4
PR
PR
OLP
Co
CS
R
Co
Co
Co
6 8
2
0 1
4
H
C
F
H
C
F
LEVA
LEVB
LEVC
COMP-A
COMP-B
3854A24002B
FMo1
FMo2
4WVSV
OUTDOOR WIRING DIAGRAM
2(N)
BK
BK
BRBL
GVS
CRDTOINDOORUNIT-B
BKBRBL
GVS
CRDTOINDOORUNIT-C
BKBR
GN/YL
BL
GVS
F1
F1
F1
F1
CN-TH1THERMISTOR(DISCHARGE1)THERMISTOR(DISCHARGE2)
CS
R
CN-LEV(A) CN-LEV(B) CN-LEV(C)
HMC036KDT1HMH036KDT1
HMC036KDT1 HMH036KDT1
14 MPS Multi Air Conditioner
Electronic Control Device
Electronic Control Device
Indoor Unit
• MAIN P.C.B DC ASM
Service Manual 15
Electronic Control Device
Outdoor Unit
ASM P/N : 6871A20479APCB P/N : 6870A90186A
CN_OOO
C51M
R22M
D05M
ZD03M
TRA
NS6
2003.11.10
CN_P
OW
ER2
- ~
R36M
+~
R11M
BD01
M
NT
C
SMPS
C12M
C10D
1 3 65
R34M
C28M
C30M
C19M
C07M
Q06
M
C22M
R35M
Q09M
R24M
ZD02M
D06M
R37M
C32M
C33M
R25M
ZD01M
R23M
R12M
R10M
Q03M
D04
M
C23M
C10M
R13M
D02M
TRANS5
L10M
TRANS3
TRA
NS4
L011M
L12M
13 12
L09M
C29M
9 78
C17M
TRA
NS2
TRANS1
L02M
L08M
L07M
L06M
L05M
C18M
D03M
R09M
L01M
C06M
D01M
IC01
A
C08D
R02D
C04
D
C01D
L01D
Q08M
D01D
C31M
C25M
L02D
R33M
IC04D
C02D
C03D
C07D
C05D
R30M
R31M Q07
M
CN_LEV(C)
C52M
L01HC0
2A
RY_FAN(L)
IC01K
C26M
R32M
C27M
R28M
Q05
M
IC05
M
C14
M
C21M
R20M
C16M
C15M
R21M
R16M IC04M
IC03M
C02M
R29M
R27M
R26M
R19M
C24
M
CN_COM3
C13M
R18M
R14
M
R17M
R15M
CN_COM1
Q04
M
CN_COM2
RY_4WAY
R08M
Q02
M
R04
MR0
3M
C09M
C05M
R07M
C04
M
R06M
RY_LIQ
R02MC03M
RY_GAS
R01M
Q01
MC01M
IC03K
L4(D
)
L3(C
)
L2(B
)
L1(A
)
IC02K
Q01
Z
OSC
01B
CN_RY_FAN
CN_POWER1
RY_FAN(H)
R05M
3
RY_COMP(B)
C11M
L03M
L04
M
NF03M
CN_RY_SV
NF05M NF04M NF02M NF01M
SW01
F
CN_LEV(B) CN_LEV(A)
C50M
LED0
1T
CN_T
H1CN
_JIG
CN_T
H2
RY_COMP(A)
4
4
PCB P/N : 6870A90195AASM P/N : 6871A20500
C04J
R01J
NF01J
C07J
C05J C06J
NF02J
C09J
C03J
C01J
GND1
D01J
C02J
CN_TAB1(N)
ZNR01J
CN_POWER2
C08J
GND2
FUSE(250V/T5A)CN_TAB2(L)
CN_POWER1
• MAIN P.C.B DC ASM
16 MPS Multi Air Conditioner
Electronic Control Device
Display P.C.B ASM
Service Manual 17
Schematic Diagram
Schematic Diagram
Indoor Unit
PKM
13EP
P-4
002
OSC
01B
3.6V
CST
-8.0
0MT
W
R21H
~R2
5H
50V
8
R11H
~R1
4H
R02F
12.1
K
C06D
103
AUT
O R
EST
ART
REM
OT
E CO
NT
ROL
FORC
ED O
PERA
TIO
N
SWIT
CHLI
MIT
CN-S
W
COM
NO
NC
123
123
Opt
ion
14 23
SW01
F
5V
5V 6.2K
R06F
R04
F6.
2K
470
uF25
V
C05D
+
DC5V
7805
1N4
148
D99
IC02
DO
I
470
uF25
V
C03D
104
50V
C04
D+
DC12
V
7812
IC01
DO
I
C DS Q
ST93
C46C
B6
R13H
R12H
20K
R11H
OJ2H
OJ1H
OJ3H
R14
H
5 93C4
6B
EEPR
OM
Vss
7 6DU O
RG
Vcc
OJ4H4321
210
K
+
50V
C02D
104
680u
F25
V
C01D
10K
R97
KA39
3IC
9-1
-4
OR2
HO
R5H
DC 5
V
R96
20K
OR3
H~0R
5HO
R4H
OR3
H
DC12
V3
1+
8
10K
OR1
H56
KR9
510
K
R21H
R24
H
R25H
5V
12.1
K1%
55
Ope
rati
on
RECE
IVERV
cc
GN
D
Vou
t
Slee
p
CMP
Tim
er
11
220
10V
C02L
LED2
LED1
LED4
LED3
44 5 2 6
5 62
CN-D
ISP
7 337
RDPK OR
YL
22 1
1
4 3
4 3
rece
iver
R01G
~R0
4G
220
STEP
PIN
G M
OT
OR
(UP/
DOW
N)
BLCN
-U/D
4
104
C02D
5V
11 1076
5V
45
48
35
46
47
1314
3334
2 646337325756 1
KID6
5004
AF
IC01
GKI
D650
04A
F
14 1213
3 54
9
1516
8 1 2
HVB
OUT
IC01
M
9
7 84 65
18
555450515253
1716
1920
2161
62
10
7
R01B
,1M
R01T
~R0
5T
8
5V
123
119
106
7
40
543
42
29 41
31 30 4438
220
0.01 R2
2H
R23H
25V
10V
R02A
,20K
C01A
5V
C02A
21
3
KID6
5004
AF
5924
2223
1560
25 26 36 28 2739
49
58
15 2
12 5
11 6
13 4
14 3
5V
16 1
9
8
IC02
M
R02L
,1K
C01L
680
pF
R81
1K
R02B
,10K
50V
C81
103
5V
rece
iver
R02E
,20
R01E
5.1K
R01L
1KBZ
01E
PK
321
2 2
STEP
PIN
G M
OT
OR
(LEF
T/R
IGHT
)
BL
3 3
4 4
5 5
1 1CN
-L/R
OR
YL
RD
Opt
ion
PIPE
-TH
2 3 4
DC12
V
CN-M
OT
OR
44
INDO
OR
FAN
MO
TO
R
33
22
11
DC 5
V
+
11
CN-D
C/DC
104
,50V
C07D
RXE2
50PO
LY S
W
~
100u
F63
V
C92
44
55
2 3
2 3
1/4
W75
0R9
9
11
11 42 3
HVB
OUT
+7
KSC7
536
IC01
AKI
A70
36P
5V
C91
103
1%
6.
2KR0
4H
KA39
3IC
9-2
R90
1KR9
3 10
K-
5
DC 5
VR9
2 10
KR9
14
.7K
6
1
%
CN-T
H1
1%
5V
12.1
KR0
2H
24 334 2
11
CN-T
H2
5V
6.2k
R26H
3 223
PIPE
-TH
ROO
M-T
H
12V
12
12
CN-H
VB
Opt
ion
33
HVB
OUT
18 MPS Multi Air Conditioner
Schematic Diagram
Outdoor Unit
P07
SW01
F
OR2
H,O
R7H,
OR1
0H:9
1K,O
R3H-
4H,
OR8
H-9H
,OR1
1H-1
2H:1
5K(E
TC:
20K)
R03T
11
DC 5
V
56K
R04
T1K
1 2
7036
P
IC01
A
CN-J
IG
3434
22
JIG
_RX
JIG
_TX
DC 5
V
10K
R01T
1KR02T
C01H
-C04
H : 1
03
P21
21
JIG
_RX
26
OSC
01B
CST
-8.0
0MG
W
JIG
_TX
+3
C02A 10
R03A
,100 50
V
25V
0.01
C01A
R02A
,4.7
KR0
1A,1
K
Xin
Vss
Xou
tR0
1B,1
M2524
P22
RESE
T2322
P20
19R0
1F,1
K
R02F
,10K
R02G
,10K
R01G
,10K
R04
G,1
0K
R03G
,10K
P32
29
30P3
3
2827
P31
P30
L4(C
)
L3(C
)
L1(A
)
L2(B
)
PWM
(A)
PWM
(C)
PWM
(B)
P53
P54
46
47
P52
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Service Manual 19
Schematic Diagram
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COM
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4
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(C)
DC 1
5V
Vm
(C)
Vm
(B)
DC 1
5V
DC 0
V
BD01
MD1
5XB6
0
DC 3
10V
RX(A
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DC 1
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TX
(A)
DC 5
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R13K 1K
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1
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2 31
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1
2 31
20 MPS Multi Air Conditioner
Functions
Functions
• Room temperature sensor. (THERMISTOR)
• Maintains the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 seconds at the starting.
• Restarting is inhibited for approx. 3 minutes.
• High, Med, Low, Chaos
--- Lights up in operation--- Lights up in Sleep Mode--- Lights up in Timer Mode
--- Lights up in Deice Mode(for Heat pump model)
--- Lights up in Compressor operation(for Cooling model)
• Intermittent operation of fan at low speed.
• The fan is switched to low(Cooling), med(Heating) speed.• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
• The fan is switched to intermittent or irregular operation• The fan speed is automatically switched from high to low speed.
• The louver can be set at the desired position or swingup and down automatically.
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Operation indication Lamps (LED)
OUTDOOR
Health Dehumidification Operation
• Both the indoor and outdoor fanstops during deicing.
• Hot start after deice ends.
• The indoor fan stops until theevaporator piping temperature will bereached at 28°C.
Sleep Mode Auto Control
Natural Air Control by CHAOS Logic
Airflow Direction Control
Deice (defrost) control (Heating)
Hot-start Control (Heating)
Service Manual 21
Functions
Remote Controller
JET COOL
Healthy Dehumidification Operation Mode.( )
Operation Mode Selection
(Cooling model only)
(Heating model only)
Cooling Operation Mode.( )
Heating Operation Mode.( )
Auto Operation Mode.( )
Sleep Operation
˚C To ˚F Swtiching Button
Room, Temperature Display
Setting the Time or Timer
Airflow Direction Control
Operation ON/OFF
Temperature SettingTEMPERATURE LOWHIGH
Timer SelectionON OFF
˚C / ˚F
Timer SettingSET
Timer CancelCANCEL
Fan Operation Mode
Reset
Fan Speed Selection
(Low) (Med) (High) (CHAOS)
Down to 18°C(64˚F)
Up to 30°C(86˚F)Cooling
: Cancel Sleep Mode, Timer ON or Timer OFF
: 1, 2, 3, 4, 5, 6, 7, Off Timer
: Fan Operates without cooling or heating.
: High: 39°C(102˚F) LOW : 11°C(52˚F)
Down to 16°C(60˚F)
Up to 30°C(86˚F)Heating
: OFF, ON, OFF ON
22 MPS Multi Air Conditioner
Display Function
Self-diagnosis Function
Display Function
1
(3times)
3sec 3sec
(5times)
3sec
(twice)
3sec 3sec
(once)
3sec 3sec 3sec
2
3
5
8
ErrorCode
Error LED(Indoor body operation LED)
Error contents SVC check point
• Indoor suction temperature thermistor open/short.
• Indoor pipe temperature thermistor open/short.
• Indoor TH ass'y check
• Outdoor TH ass'y check
• Resetting of remocon operating mode
• Communication line/circuit check
• Outdoor suction temperature thermistor open/short.
• Outdoor pipe temperature thermistor open/short.
• Abnormal operation of multi product. (Simultanueous operation of cooling and heating)
• Indoor fan lock
• Poor communication
• Check indoor fan motor and outdoor PCB ass'y
• Cooling, Soft Dry, Fan, Heating • Cooling, Soft Dry, Fan
• Sleep Mode • Sleep Mode
• Timer Mode • Timer Mode
• Hot-start, Defrost
Operation Indicator
Timer Indicator
Sleep Timer Indicator
Defrost Indicator
Operation Indicator
Timer Indicator
Sleep Timer Indicator
Compressor on IndicatorOUT
DOOR
Error Indicator
• The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble.• Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table.• If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed.• After error occurrence, if error is released, error LED is also released simultaneously.• To operate again on the occurrence of error code 12, be sure to pull out power cord and then re-insert.• Having or not of error code is different from Model.
1. Heating Model 2. Cooling Model
Service Manual 23
Operation Details
Operation Details
Main Unit Function1) C/O Model
Operation Indicator• On while in appliance operation, off while in appliance pause• Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on)
Sleep Timer Indicator• On while in sleep timer mode, off when sleep timer cancel or appliance operation pause
Timer Indicator• On while in timer mode (on/off), off when timer mode is completed or canceled.
Comp. Running Incidator• While in appliance operation, on while in outdoor unit compressor running, off while in compressor off
2) H/P Model
Operation Indicator• On while in appliance operation, off while in appliance pause• Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on)
Sleep Timer Indicator• On while in sleep timer mode, off when sleep timer cancel or appliance operation pause
Timer Indicator• On while in timer mode (on/off), off when timer mode is completed or canceled
Defrost Indicator• Off except when hot start during heating mode operation or while in defrost control
Cooling Mode Operation• When the intake air temperature reaches 0.5°C below the setting temp, the compressor and the outdoor fan
stop.• When it reaches 0.5°C above the setting temp, they start to operate again.
Compressor ON Temp Setting Temp+0.5°CCompressor OFF Temp Setting Temp-0.5°C
• While in compressor running, operating with the airflow speed set by the remote control. While in compressornot running, operating with the low airflow speed regardless of the setting.
Healthy Dehumidification Mode• When the dehumidification operation input by the remote control is received, the intake air temperature is
detected and the setting temp is automatically set according to the intake air temperature.26°C ≤ Intake Air Temp 25°C24°C ≤ Intake Intake Air Temp<26°C Intake Air Temp-1°C18°C ≤ Intake Intake Air Temp<24°C Intake Air Temp-0.5°CIntake Air Temp<18°C 18°C
24 MPS Multi Air Conditioner
Operation Details
• While in compressor off, the indoor fan repeats low airflow speed and pause.• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidifica-
tion operation and 4-min compressor off repeat.Compressor ON Temp. Setting Temp+0.5°CCompressor OFF Temp. Setting Temp-0.5°C
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
Heating Mode Operation(H/P model)• When the intake air temp reaches +3°…above the setting temp, the compressor is turned off. When below
the setting temp, the compressor is turned on.Compressor ON Temp. Setting Temp.Compressor OFF Temp. Setting Temp.+3°C
• While in compressor on, the indoor fan is off when the indoor pipe temp. is below 20°C, when above 28°C , itoperates with the low or setting airflow speed. When the indoor pipe temp is between 20°C and 28°C, it oper-ates with Super-Low(while in sleep mode, with the medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C, when above 35°C , itoperates with the low airflow speed.
• If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, theoutdoor fan is turned on/off according to the indoor pipe temp.
• While in defrost control, both of the indoor and outdoor fans are turned off.
Defrost Control(H/P model)• Defrost operation is controlled by timer and sensing temperature of outdoor pipe.• The first defrost starts only when the outdoor pipe temperature falls below -6°C after 45 minutes passed from
starting of heating operation and more than 10 minutes operation of compressor.• Defrost ends after 9/6 minutes passed from starting of defrost operation or after the outdoor fan operates
within max. 2 minutes 30 seconds when the outdoor pipe temperature rises over 12°C even it before 12 min-utes.
• The second defrost starts only when the outdoor pipe temperature falls below -6°C after 45 minutes passedfrom ending of the first defrost and more than 10 minutes operation of compressor.
Heating overload(H/P models)• Outdoor fan ON/OFF by sensing outdoor pipe temperature.• Outdoor fan is OFF if pipe temperature is over 6.5°C and outdoor fan is ON if pipe temperature is below 0°C.• Outdoor fan is off if any one part is heating overload condition.
Service Manual 25
Operation Details
Fuzzy Operation (C/O Model)• According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting
temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.Compressor ON Temp Setting Temp + 0.5°CCompressor OFF Temp Setting Temp + 0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.26°C ≤ Intake Air Temp 25°C24°C ≤ Intake Air Temp < 26°C Intake Air Temp + 1°C22°C ≤ Intake Air Temp < 24°C Intake Air Temp + 0.5°C18°C ≤ Intake Air Temp < 22°C Intake Air TempIntake Air Temp<18°C 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to thetemperature.
Fuzzy Operation (H/P Model)• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since
the operation off, the operation mode is selected.• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only
the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake airtemp at that moment as follows.24°C ≤ Inatake Air Temp Fuzzy Operation for Cooling21°C ≤ Inatake Air Temp<24°C Fuzzy Operation for DehumidificationInatake Air Temp<21°C Fuzzy Operation for Heating
• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
1) Fuzzy Operation for Cooling
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more belowthe setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressoris turned on.Compressor ON Temp Setting Temp +0.5°CCompressor OFF Temp Setting Temp + 0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.26°C≤ Intake Air Temp 25°C24°C≤ Intake Air Temp<26°C Intake Air Temp + 1°C22°C≤ Intake Air Temp<24°C Intake Air Temp + 0.5°C18°C≤ Intake Air Temp<22°C Intake Air TempIntake Air Temp<18°C 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the tem-perature.
26 MPS Multi Air Conditioner
Operation Details
2) Fuzzy Operation for Dehumidification
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more belowthe setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressoris turned on.Compressor ON Temp Setting Temp + 0.5°CCompressor OFF Temp Setting Temp+0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.26°C ≤ Intake Air Temp 25°C24°C ≤ Intake Air Temp<26°C Intake Air Temp+1°C22°C ≤ Intake Air Temp<24°C Intake Air Temp+0.5°C18°C ≤ Intake Air Temp<22°C Intake Air TempIntake Air Temp<18°C 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as indehumidification operation.
3) Fuzzy Operation for Heating
• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C or more abovethe setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.Compressor ON Temp Setting TempCompressor OFF Temp Setting Temp + 3°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.20°C≤Intake Air Temp Intake Air Temp + 0.5°CIntake Air Temp<20°C 20°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to theintake air temperature and the setting temperature.
Airflow Speed Selection• The airflow speed of the indoor fan is set to high, medium, low, or chaos (auto) by the input of the airflow
speed selection key on the remote control.
On-Timer Operation• When the set time is reached after the time is input by the remote control, the appliance starts to operate.• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.• If the appliance is operating at the time set by the timer, the operation continues.
Service Manual 27
Operation Details
Off-Timer Operation• When the set time is reached after the time is input by the remote control, the appliance stops operating.• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.• If the appliance is on pause at the time set by the timer, the pause continues.
Off-Timer <=> On-Timer Operation• When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation is
carried out according to the set time.
Sleep Timer Operation• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in appli-
ance operation, the operation of the appliance stops.• While the appliance is on pause, the sleep timer mode cannot be input.• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature
increases by 1°C. After another 30 min elapse, it increases by 1°C again.• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to
the low.• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to
the medium.
Chaos Swing Mode• By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they are
fixed to the desired direction.• While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.
Chaos Natural Wind Mode• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the air-
flow mode is operated for 2~15 sec. randomly by the Chaos Simulation.
Jet Cool Mode Operation (C/O Model)• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates.• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
Jet Cool Mode Operation (H/P Model)• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the othermode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C.• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then
operated in order that the air outflow could reach further.
28 MPS Multi Air Conditioner
Operation Details
Auto Restarting Operation• When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance automatically operates in the mode on the memory.• The slide switch on the main unit of the appliance should be on the Auto Restarting position in order that the
Auto Restarting operation is available.• Operation Mode that is kept on the memory
- State of Operation ON/OFF- Operation Mode/Setting Temp/Selected Airflow Speed- Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour)
Slide Switch
FORCEDOPERATION
AUTORESTART
REMOTECONTROL
Forced Operation (C/O Model)• To operate the appliance by force in case that the remote control is lost, the forced operation selection switch
is on the main unit of the appliance to operate the appliance in the standard conditions.• When the power is supplied while the slide switch is on the forced operation position, or when the slide switch
position is switched to the Auto Restarting position (or test operation) or switched from the remote control posi-tion to the forced operation position while the power is on, the forced operation is carried out.
• When the slide switch position is switched from the forced operation position to the Auto Restarting position orthe remote control position, the forced operation is canceled and the appliance stops operating.
• The forced operation is carried out in cooling mode with the setting temperature 22°C and the high speed ofairflow.
• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times toindicate the forced operation.
Forced Operation (H/P Model)• To operate the appliance by force in case that the remote control is lost, the forced operation selection switch
is on the main unit of the appliance to operate the appliance in the standard conditions.• When the power is supplied while the slide switch is on the forced operation position, or when the slide switch
position is switched to the Auto Restarting (or test operation) position or switched from the remote control posi-tion to the forced operation position while the power is on, the forced operation is carried out.
• When the slide switch position is switched from the forced operation position to the Auto Restarting position orthe remote control position, the forced operation is canceled and the appliance stops operating.
• The forced operation is carried out in cooling mode with the setting temperature 22°C and the high speed of airflow.• In the forced operation mode, the indoor fan is operated at low speed for around 15 sec and then the operation
condition is set according to the intake air temperature as follows.24°C≤Intake Air Temp Cooling Mode Operation, 22°C, High Speed21°C≤Intake Air Temp<24°C Dehumidification Operation, 23°C, High SpeedIntake Air Temp<21°C Heating Mode Operation, 24°C, High Speed
• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times toindicate the forced operation.
Service Manual 29
Operation Details
Remote Control Operation Mode• When the remote control is selected by the slide switch on the main unit, the appliance operates according to
the input by the remote control.
Protection of the evaporator pipe from frosting• If the indoor pipe temp is below 0°C in 7 min. after the compressor operates without any pause while in cool-
ing cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the indoorevaporator pipe from frosting.
• When the indoor pipe temp is 7°C or higher after 3 min. pause of the compressor, the compressor and theoutdoor fan is turned on according to the condition of the room temperature.
Buzzer Sounding Operation• When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds.• When the appliance-pause key is input by the remote control, the long "beep—" sounds.• When a key is input by the remote control while the slide switch on the main unit of the appliance is on the
forced operation position, the error sound "beep-beep-beep-beep-beep-" is made 10 times to indicate that theremote control signal cannot be received.
30 MPS Multi Air Conditioner
2-way, 3-way Valve
2-way, 3-way Valve
2-way Valve (Liguid Side) 3-way Valve (Gas Side)
Works Shaft position Shaft position Service port
Shipping Closed Closed Closed(with valve cap) (with valve cap) (with cap)
Air purging Open Closed Open(Installation) (counter-clockwise) (clockwise) (push-pin or with
vacuum pump)
Operation Open Open Closed(with valve cap) (with valve cap) (with cap)
Pumping down Closed Open Open(Transfering) (clockwise) (counter-clockwise) (connected
manifold gauge)
Evacuation Open Open Open(Servicing) (with charging
cylinder)
Gas charging Open Open Open(Servicing) (with charging
cylinder)
Pressure check Open Open Open(Servicing) (with charging
cylinder)
Gas releasing Open Open Open(Servicing) (with charging
cylinder)
3.
2.
1.
4.
5.
6.
Flare nut
To piping connection
Open positionClosed position
Flare nut
Valve cap
To piping connection
Open positionClosed position
Hexagonal wrench(4mm)
To outdoor unit
Pin
Service port
Service port cap
To outdoor unit
Service Manual 31
2-way, 3-way Valve
• Procedure1. Confirm that both the gas side and liquid side
valves are set to the open position.- Remove the valve stem caps and confirm that
the valve stems are in the raised position.
- Be sure to use a hexagonal wrench to operatethe valve stems.
2. Operate the unit for 10 to 15 minutes.
3. Stop operation and wait for 3 minutes, then con-nect the manifold gauge to the service port ofthe gas side valve.- Connect the hose of the gauge with the push
pin to the service port.
4. Air purging of the charge hose.- Open the Low-handle valve on the gauge
slightly to air purge from the hose.
5. Set the liquid side valve to the closed position.
6. Operate the air conditioner at the cooling cycleand stop it when the gauge indicates 1kg/cm2g.
7. Immediately set the gas side valve to the closedposition.- Do this quickly so that the gauge ends up indi-
cating 1kg/ g.
8. Disconnect the charge set, and mount the liquidside and gas side valve caps and the serviceport nut.- Use torque wrench to tighten the service port
nut to a torque of 1.8kg.m.(4.2kg*m/5.5kg*m)
- Be sure to check for gas leakage.
Indoor unit
Outdoor unit
Liquid side
Close
Gas side
2-Wayvalve
Open3-Wayvalve
manifold gauge
Indoor unit Liquid side
Close
Gas side
2-Wayvalve
Open3-Wayvalve
Hi- handle(CLOSE)
Low-handle(CLOSE)
(1) Pumping down
32 MPS Multi Air Conditioner
2-way, 3-way Valve
(2) Evacuation(All amount of refrigerant leaked)
• Procedure1. Confirm that both the liguid side valve and gas
side valve are set to the opened position.
2. Connect the vaccum pump to the center hose ofthe manifold gauge.
3. Connect the service port of the gas side valve tothe low side of the gauge.
4. Connect power supply to outdoor unit.5. Evacuation for approximately one hour.
- Confirm that the gauge needle has movedtoward-76 cmHg (vacuum of 4 mmHg or less).
6. Close the Low handle of the gauge turn off thevacuum pump, and confirm that the gauge nee-dle does not move(approximately 5 minutesafter turning off the vacuum pump).
7. Disconnect the charge hose from the vacuumpump.- Vacuum pump oil.
If the vacuum pump oil becomes dirty or deplet-ed,replenish as needed.
8. Mount the valve caps and the service port caps.
Indoor unit
Outdoor unit
Liquid side
Open
Gas side
2-Wayvalve
Open3-Wayvalve
manifold gauge
Indoor unit Liquid side
Open
Gas side
2-Wayvalve
Open3-Wayvalve
Vacuum pump
Hi- handle(OPEN)
Low-handle(OPEN)
Service Manual 33
2-way, 3-way Valve
(3) Gas Charging(After Evacuation)
• Procedure1. Connect the gauge to the charging cylinder.
- Connect the charge hose which you disconnect-ed from the vacuum pump to the valve at thebottom of the cylinder.
- If you are using a gas cylinder, also use a scaleand reverse the cylinder so that the system canbe charged with liquid.
2. Purge the air from the charge hose.- Open the valve at the bottom of the cylinder and
press the check valve on the charge set to purgethe air. (Be careful of the liquid refrigerant). Theprocedure is the same if using a gas cylinder.
3. Open the low handle on the gauge and chargethe system with liquid refrigerant.- If the system can not be charged with the speci-
fied amount of refrigerant, it can be chargedwith a little at a time (approximately 150g eachtime) while operating the air conditioner in thecooling cycle; however, one time is not suffi-cient, wait approximately 1 minute and thenrepeat the procedure(pumping down-pin).
4. Immediately disconnect the charge hose fromthe gas side valve's service port.
- Stopping partway will allow the gas to be dis-charged.
- If the system has been charged with liquidrefrigerant while operating the air conditionerturn off the air conditioner before disconnectingthe hose.
5. Mount the valve stem nuts and the service portnut.- Use torque wrench to tighten the service port
nut to a torque of 1.8 kg.m.(4.2kg.m/5.5kg.m.)- Be sure to check for gas leakage.
manifold gaugeChargingcylinder
Hi- handle(OPEN)
Low-handle(OPEN)Check valve
Indoor unit
Outdoor unit
Liquid side
Open
Gas side
2-Wayvalve
Open3-Wayvalve
Indoor unit Liquid side
Open
Gas side
2-Wayvalve
Open3-Wayvalve
This is different from previous procedures.Because you are charging with liquid refrigerantfrom the gas side, absolutely do not attempt tocharge with larger amounts of liquid refrigerantwhile operating the air conditioner.
34 MPS Multi Air Conditioner
Cycle Troubleshooting Guide
Cycle Troubleshooting GuideTrouble analysis1. Check temperature difference between intake and discharge air and operating current.
All amount of refrigerant leaked out.Check refrigeration cycle.
Refrigerant leakageClog of refrigeration cycleDefective compressor
Excessive amount of refrigerant
Normal
Notice:Temperature difference between intake and discharge air depends on room air humidity. When the room airhumidity is relativery higher, temperature difference is smaller. When the room air humidity is relatively lowertemperature difference is larger.
2. Check temperature and pressure of refrigeration cycle.
Notice:1. The suction pressure is usually 4.5~6.0 kg/cm2G at normal condition.2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with
putty.
Temp. difference : approx. 0°CCurrent : less than 80% of
rated current
Temp. difference : approx. 8°CCurrent : less than 80% of
rated current
Temp. difference : less than 8°CCurrent : over the rated
current
Temp. difference : over 8°C
Temp. Difference
Operating Current
Suction pressure Temperature(Compared with (Compared with Cause of Trouble Description
the normal value) the normal value)
High Defective compressor Current is low.Defective 4-way reverse valve
Normal Excessive amount of High pressure does not quicklyrefrigerant rise at the beginning of operation.
Insufficient amount of Current is low.Lower Higher refrigerant(Leakage)
Clogging Current is low.
Higher
Service Manual 35
Electronic Parts Troubleshooting Guide
Electronic Parts Troubleshooting Guide
(* Refer to Electronic Control Device drawing and Schematic diagram.)
Turn off Main Power
Turn on Main Power
Does "beeping" sound is made from the Indoor Unit?
Primarily, the operating condition of Micom is OK.Check the voltage of power(About AC 220V/AC240V, 60Hz)
• Main power's voltage• Voltage applied to the unit• Connecting method of Indoor/Outdoor connecting
cable• Check Fuse (Outdoor PCB Ass'y)• Check Varistor
ZNRØ1J(Outdoor PCB Ass'y)
Check the connection housing for contacting
• Connector related to CN-DC/AC• Display PWB Ass'y Check
Check each load(Indoor/Outdoor Fan Motor,Compressor, Stepping Motor etc.) and contactingcondition of related connector
PCB Board Operation Check
Items
• Power Transformer(Outdoor unit)- Input Voltage- Output Voltage
• IC01D(7812) Output(Indoor/Outdoor unit)
• IC02D(7805) Output(Indoor/Outdoor unit)
• IC01A(KIA7036, Reset IC)X01(8MHz)
• Replace Trans
• Replace IC01D
• Replace IC02D
• Replace faulty parts
- About AC220V/240V±10% - Check the power voltage- About AC14±3V
• DC +12V
• DC +5V
• Voltage of Micom No. 2,(DC +4.5V over) and Soldering condition.
Content Remedy
NO YES
(After 10 seconds)
1. The Outdoor Unit does not operate at all
36 MPS Multi Air Conditioner
Electronic Parts Troubleshooting Guide
Turn on Main Power
While the compressor has been stopped, the compressor does notoperate owing to the delaying function for 3 minutes after stopped.
Caused by other parts except the remote controlCause by the remote control
When the mark( ) is displayed in LCD screen, replacebattery.
Check the contact of CN-DISPI connector.
When the compressor stopped Indoor Fan is driven by a low speed.At this point the wind speed is not controlled by the remote controller.(When operated in the Sleeping Mode, the wind speed is set to thelow speed by force.)
Check DISP PWB Ass'y- Voltage between CN DISP1 - : DC +5V
When the detect switch(double key) inside the remotecontroller door is fault, it is impossible to operatetemperature regulating( / ) and wind speed selecting.
Check the connecting circuit between the remote con-troller MICOM (No. ) - R17(2Ω) - IR LED - Q1 -R16(2.2KΩ).
Check point
• Check the connecting circuit between PIN -R01L(1K) - C01L(680PF) - MICOM PIN
• Check Receiver Ass'y
2. The product is not operate with the remote controller.
Service Manual 37
Electronic Parts Troubleshooting Guide
3. When cooling does not operate
Turn on Main Power
Operate "Cooling Mode( )" by setting the desired temperature of theremote controller is less than one of the indoor temperature by 1°C at least.
When in Air Circulation Mode, Compressor/Outdoor Fan is stopped.
Check the sensor for indoor temperature is attached as close as to beeffected by the temperature of Heat Exchanger(EVA).
When the sensor circuit for indoor temperature and connector are in badconnection or are not engaged, Compressor/Outdoor Fan is stopped.
• Check the related circuit of R02H(12.1K), R01H(1.0K), R04H(6.2K),R03H(1.0K) (Indoor unit).
• Check the indoor temperature sensor is disconnected or not(About 10kΩ / at 25°C).
Check if connection line (Indoor/Outdoor) is complied with Wiring Diagram.
Check Outdoor Unit(PCB Ass'y)
Correct connection line
Good connection Bad connection
38 MPS Multi Air Conditioner
Electronic Parts Troubleshooting Guide
4. When indoor Fan does not operate.(or "ON/OFF" led of display blinks 8 times)
Turn off Main power
Check it (Indoor/Outdoor)the connection line is complied with Wiring Diagram
Check the line fuse in the outdoor unit
Check the connection of CN-MOTOR
check the operation of blower by manual
Correct connection line
Check POLY S/W in indoor PCB Ass'y
If it is opened If it is shorted
Exchange Indoor PCB Ass'y Check the outdoor PCB Ass'y
Bad connection Good connection
Service Manual 39
Electronic Parts Troubleshooting Guide
5. When Vertical Louver does not operate.
• Confirm that the Vertical Louver is normally geared with the shaft ofStepping Motor.
• If the regular torque is detected when rotating the Vertical Louver withhands Normal
• Check the connecting condition of CN-U/D Connector• Check the soldering condition(on PWB) of CN-U/D Connector
If there are no problems after above checks
• Confirm the assembly conditions that are catching and interfering partsin the rotation radial of the Vertical Louver
Check the operating circuit of the Vertical Louver
• Confirm that there is DC +12V between pin (RED) of CN-U/D andGND.
40 MPS Multi Air Conditioner
Electronic Parts Troubleshooting Guide
6. When Heating does not operate
Operate “Heating Mode( )” by setting the desired temperature of theremote control is higher than one of the indoor temperature by 2°C atleast.
In heating Mode, the indoor fan operates in case the pipe temperatureis higher than 28°C.
Check the connector of intake and pipe sensor(thermistors)
• Check the related circuit of R02H(12.1K), R01H(1.0K), R04H(6.2K),R03H(1.0K).
• Check the indoor room temperature is disconnected or not (about10KΩ/at 25°C).
• Check the indoor pipe temperature is disconnected or not (about5KΩ/at 25°C).
Turn ON Main Power
Check if connection line (Indoor/Outdoor) is complied with Wiring Diagram.
Check Outdoor Unit(PCB Ass'y)
Correct connection line
Good connection Bad connection
Service Manual 41
Electronic Parts Troubleshooting Guide
7. Outdoor unit does not operate at all.
8. Communication error
PCB Board Operation Check in Outdoor
Items
• Power Transformer(Outdoor unit)- Input Voltage- Output Voltage
• IC01D(7812) Output(Indoor/Outdoor unit)
• IC02D(7805) Output(Indoor/Outdoor unit)
• IC01A(KIA7036, Reset IC)X01(8MHz)
• Replace Trans
• Replace IC01D
• Replace IC02D
• Replace faulty parts
- About AC220V/240V±10% - Check the power voltage- About AC14±3V
• DC +12V
• DC +5V
Content Remedy
• The control data can be transmitted or received between indoor and outdoor unit with one signal cable.
• If the data be disturbed by any noise level and misconnection, the unit will be operated incorrectly. In thiscase, the indoor unit blinks the operation and operation LED on display and indoor fan, outdoor fan, COMPare not operated.
• The unit can be reoperated by On/Off control of Remocon.
Check Outdoor Unit
Turn off Main Power
• Check the electrical wiring diagram of outdoor side.• Check the abnormal condition for the component of
Compressor/Outdoor Fan Motor/4-way.• Check the “open” or “short” of connecting wires between indoor and
outdoor.
42 MPS Multi Air Conditioner
Installation
Installation(1) Installation of Indoor, Outdoor unit
Front
Right Rear right
Rear left
Down right
Left
More than 5 cm
More than eye-level
More than5 cm
More than5 cm
more than 70cm(27.6 inch)
more than 30cm(11.8 inch)
more than 30cm(11.8 inch)
A
B
Indoor unit
Outdoor unit
1) Selection of the best location1. Indoor unit
• There should not be any heat source or steamnear the unit.
• There should not be any obstacles to preventthe air circulation.
• A place where air circulation in the room will begood.
• A place where drainage can be easily obtained.
• A place where noise prevention is taken intoconsideration.
• Do not install the unit near the door way.
• Ensure the spaces indicated by arrows fromthe wall, ceiling, fence, or other obstacles.
2. Outdoor unit• If an awning is built over the unit to prevent
direct sunlight or rain exposure, be careful thatheat radiation from the condenser is notrestricted.
• There should not be any animals or plantswhich could be affected by hot air discharged.
• Ensure the spaces indicated by arrows fromthe wall, ceiling, fence, or other obstacles.
3. Piping length and the elevation
Pipe Size
GAS LIQUID
Max. pipinglengthA (m)
Max.Elevation
B (m)
1/2"(3/8") 1/4" 15 7.5
Service Manual 43
Installation
2) Indoor Unit InstallationThe mounting wall should be strong and solidenough to protect it from the vibration.
1. Mount the installation plate on the wall withfour Type "A" screws.(If mounting the unit on the concrete wall, consid-er using anchor bolts.)
• Always mount the Installation plate horizontallyby aligning the marking-off line by means of thethread and a level.
2. Drill the piping hole with 70mm dia. holecoredrill.• Line according to the arrows marked on lower
the left and the rght side of the Installation Plate.The meeting point of the extended line is thecenter of the hole.
• Drill the piping hole at either the right or the leftand the hole should be slightly slant to the out-door side.
Installation Plate
marking-off line
Thread
Weight
Type "A" screw
ø70mm ø70mm
5~7m
m
A
A
A
A
Indoor Outdoor
Wall
Left rear piping Right rear piping
The lower left and the right side ofInstallation Plate
44 MPS Multi Air Conditioner
Installation
1) Preparation of pipings1. Cut the pipes and the cable.
• Use the accessory piping kit or the pipes pur-chased locally.
• Measure the distance between the indoor andthe outdoor unit.
• Cut the pipes a little longer than the measureddistance.
• Cut the cable 1.5m longer than the length of thepipe.
2. Remove burrs.• Remove burrs from cut edges of pipes.
• Turn the pipe end toward down to avoid themetal powder entering the pipe.
Caution:If burrs are not removed, they may cause a gasleakage.
3. Flaring the pipes.• Insert the flare nuts, mounted on the connection
ports of both indoor and outdoor unit, onto thecopper pipes. Some refrgerant gas may leak,when the flare nuts are removed from the indoorunit, as some gas is charged to prevent theinside of the pipe from rusting.
• Fit the copper pipe end into the Bar of flare toolabout 0~0.5mm higher. (See illustration)
• Flare the pipe ends.
4. Tape the flaring portion to protect it from thedust or damages.
90 Slanted
Pipe cutter
Rough
Reamer
Pipe
Point down
"A"
Bar
Copper pipe Clamp handle Red arrow mark
Cone
BarYoke
Handle
Inclined Cracked Uneventhickness
Surfacedamaged
= Improper flaring =
When properly flared, the internal surface flare willevenly shine and be of even thickness.Since the flare part comes into contact with the connec-tors, carefully check the flare finish.
"A"; ø12.7 mm (1/2") →0~0.5 mmø9.52 mm (3/8") →0~0.5 mmø6.35 mm (1/4") →0~0.5 mm
(2) Piping and Drainage of Indoor Unit
Service Manual 45
Installation
2) Connection of Pipings1. Remove the installation plate
• Pull the two '∆' marked portion of bottom of thechassis and pull the installation plate out of chas-sis.
2. Route the drain hose and the indoor tubing.
For left rear piping
3. Route the tubing and the drain hose straightbackwards(see figure).
4. Insert the connecting cable into the indoorunit through the piping hole.• Do not connect the cable to the indoor unit.
• Make a small loop with the cable for easy con-nection later.
5. Tape the tubing, drain hose and the connectingcable. Be sure that drain hose locates at thelowest side of the bundle.Locating at the upper side can be a reason thatdrain water overflows drain pan inside the unit.
Installation plate
Pull
Pull
Connecting cable
Gas side piping
Liquid side pipingDrain hose
• To remove the holder, pressthe bottom of the chassisnear the holder upwardsand the tab is clear of itshole.
• Turn it clockwise approx.90° and remove it.
Tubing holder
Press
Pull
46 MPS Multi Air Conditioner
Installation
Connectingcable
Drain hose
Indoor unit tubing Flare nut Pipings
SpannerTorque wrench
Plastic bandsInsulation material
Press the lower left and right side of the unitagainst the Installation Plate until the hooksengage with their slots (sound click).
6. Indoor unit installation.• Hook the indoor unit onto the upper position of
the installation plate. (Engage the two hooks ofthe rear top of the indoor unit with the upperedge of the installation plate.)Ensure the hooks are properly seated on theinstallation plate by moving it in left and right.
7. Connecting the pipings to the indoor unit.• Align the center of the pipings and sufficiently
tighten the flare nut with fingers.
• Finally, tighten the flare nut with torque wrenchuntil the wrench clicks.Wrench tightening the flare nut with forquewrench, ensure the direction for tightening fol-lows the arrows on the wrench.
8. Wrap the insulation material around the con-necting portion.
CAUTION: Take care to arrange the pipings,drain hose and cables as the rightupper picture for inserting it into theindoor unit and refixing the tubingholder easily.
Pipe Size Torque
Liquid Side (1/4") 1.8kg m
Gas Side (3/8") 4.2kg m
Gas Side (1/2") 5.5kg m
Wrap the insulation material around the connectingportion.
Service Manual 47
Installation
9. Set the pipings and the connecting cable tothe back of the chassis with the tubingholder.• Hook the edge of tubing holder to tap on chas-
sis and push the bottom of tubing holder to beengaged in the bottom of chassis.
10. Indoor unit installation.• Hook the indoor unit onto the upper portion of
installation plate. (Engage the two hooks of therear top of the indoor unit with the upper edgeof the installation plate.)Ensure the hooks are properly seated on theinstallation plate by moving it in left and right.
Drain hose
Tubing holder
Taping
Piping
Push2
Hook1
Connectingcable
Drain hose
Press the lower left and right side of the unitagainst the Installation Plate until the hooksengages with their slots (sound click).
48 MPS Multi Air Conditioner
Installation
Gas side piping
Gas side piping
Evaporator side piping
Evaporator side piping
Torque wrench
B-UNIT
C-UNIT
A-UNITOutdoor unit
A
B
C
1) Connecting the pipings to the Outdoorunit
1. Align the center of the pipings and sufficientlytighten the flare nut with fingers.
2. Finally, tighten the flare nut with torquewrench until the wrench clicks.• When tightening the flare nut with torque wrench,
ensure the direction for tightening follows thearrow on the wrench.
Pipe Size Torque
Liquid Side (1/4") 1.8kg.m
Gas Side (3/8") 4.2kg.m
Gas Side (1/2") 5.5kg.m
(3) Connecting Pipings and the cable to Outdoor unit
Service Manual 49
Installation
Outdoor unit
GN/YL
20mm
GN/YL
20mm
AWG 18
AWG 12
WARNINGWARNING
NOTENOTE
Over 5mm
Holder forpower supply
cord
Connectingcable
Cover control
Terminal block
Power supplycable
A-UNIT
SVGC
B-UNIT
SVGC
C-UNIT
SVGC
Terminal BLOCK
SVGC
Terminal BLOCK
SVGC
L1 L2
Power Source208/230V AC(High voltage)
Indoor A-UNIT Indoor B-UNIT
Terminal BLOCK
SVGC
Indoor C-UNIT
Connecting cable(Low voltage)Connecting cable(Low voltage)Connecting cable(Low voltage)
Connection of the cable1. Remove the cover control from the unit by
loosening the screw.
2. Dismount caps on the conduit panel.3. Temporarily mount the conduit tubes on the conduit
panel.4. Connect the wires to the terminals on the control
board individually as the following.5. Secure the cable onto the control board with the
holder (clamper).6. Ground the unit in accordance with local codes.7. Refix the cover control to the original position with
the screw.8. Use lock nuts to secure the conduit tubes.
1. Separately wire the high and low voltage line.
2. Use heat-proof electrical wiring capable ofwithstanding temperature up to 167˚F.
3. Use outdoor and waterproof connection cable ratedmore than 300V for the connection between indoorand outdoor unit. (For example, Type SJO-WA)
• Be sure to comply with local codes while running thewire from the indoor unit to the outdoor unit(size of wireand wiring method, etc).
• Every wire must be connected firmly.
• No wire should be allowed to touch refrigerant tubing,the compressor or any moving parts.
The power cable connected to the outdoor unitshould be complied with the following specifications.(UL recognized and CSA certified)
CAUTION
The connecting cable connected to the indoor andoutdoor unit should be complied with the followingspecifications. (UL recognized and CSA certified)
50 MPS Multi Air Conditioner
Installation
Connection method of the connectingcable(Example)
(1) Dismount two-caps on the conduit panel.(2) Make a hole appropriate for the passage of connec-
tion cable through on cap by tool.(for low voltage line)
(3) Pass the connecting cable through the hole.(4) Properly connect the cable on the terminal block.(5) Fix the connection cable with clamp cord provided on
the unit not to have strain at the terminal when theconnection cable is pulled outside up to a 35 poundweight.
(6) Wind the vinyl tape round the connecting cable forsealing between the surface of the connection cableand cap.
(7) Mount the taped part of cable on the cap.(8) Finally, mount the holed cap with the wound cable on
the conduit panel.
When connecting each power wire to the correspondingterminal, follow instructions "How to connect wiring to theterminals" and fasten the wire tightly with the fixing screwof the terminal plate.
How to connect wiring to the terminalsFor solid core wiring (or F-cable)
(1) Cut the wire end with a wire cutter of wire-cutting pli-ers, then strip the insulation to expose the solid wireabout 25mm(15/16")
(2) Using a screwdriver, remove the terminal screw(s) onthe terminal plate.
(3) Using pliers, bend the solid wire to from a loop suit-able for the terminal screw.
(4) Shape the loop wire properly, place it on the terminalplater and tighten securely with the terminal screwusing a screwdriver.
For strand wiring(1) Cut the wire end with a wire cutter or wire-cutting pli-
ers, then strip the insulation to expose the strandwiring about 10mm(3/8").
(2) Using a screwdriver, remove the terminal screw(s) onthe terminal plate.
(3) Using a round terminal fastener or pliers, securelyclamp each stripped wire end with a round terminal.
(4) Position the round terminal wire, and replace andtighten the terminal screw using a screwdriver.
Loose wiring may cause the terminal to overheat orresult in unit malfunction. A fire hazard may also exist.Therefore, be sure all wiring is tightly connected.
WARNING
G
Terminalblock
Lock nut
Power supply line(1ø, 230/208V)
Conduit panel
Cap(Reuse)
Clamp cord
Hole(for low voltage line)Cap(Remove)Taping(for sealing)
Low voltage line(connecting cable)
Loop
Str
ip 2
5mm
(15/
16")
Insulation
Solid wire
High voltage
Low voltage
Str
ip 1
0mm
(3/8
")
Roundterminal
Connecting cable
Loosening theterminal blockscrew
Fastening the wire tightly
Strand wire
Service Manual 51
Installation
Connect the cable to the indoor unit1. Connect the wires to the terminals on the control
board individually according to the outdoor unit con-nection.• Ensure that the color of the wires of outdoor unit and the
terminal No. are the same as those of indoor unit respec-tively.(Refer to Wiring diagram on page11.)
2. Attach the Grille onto the cabinet.• Grasp lower the left and right side of the Grille and
engage four tabs on the top inside edge of the chassis.• Press the Grille toward the chassis until it will be back into
place.
CAUTIONCAUTION
AirConditioner Circuit Breaker
Use a circuitbreaker or timedelay fuse.
Connecting cable
Main power source
If a power plug is not to be used, provide a circuit breaker between power source and the unit as shown below.
Model
18k 1ø,230/208V 15A24k 1ø,230/208V 20A36k 1ø,230/208V 30A
Power source Fuse or breakerCapacity
• Be sure to refer to the wiring diagram label inside thecover control and carry out the correct field wiring.Wrong wiring can cause the unit to misoperate to resultin a fire hazard.
• Check local electrical codes and any specified wiringinstructions or limitations.
WARNING
52 MPS Multi Air Conditioner
Installation
1. To remove the front panel from the indoor unit,remove the front panel from the indoor unit cabinet. Set the air direction louvers up-and-down to the posi-
tion(horizontally) by hand. Remove the securing screws that retain the front
panel. Pull the lower left and right sides of the grilletoward you and lift it off.(9K Btu models: 2EA,12K Btu models: 3EA)
2. To check the drainage. Pour a glass of water on the evaporator. Ensure the water flows through the drain hose of the
indoor unit without any leakage and goes out thedrain exit.
3. Drain piping The drain hose should point downward for easy drain
flow.
Do not make drain piping.
1. Form the piping by wrapping the connecting por-tion of the indoor unit with insulation material andsecure it with two kinds of vinyl tapes. If you want to connect an additional drain hose, the
end of the drain outlet should be routed above theground. Secure the drain hose appropriately.
2. In cases where the outdoor unit is installed belowthe indoor unit perform the following. Tape the piping, drain hose and connecting cable
from down to up. Secure the tapped piping along the exterior wall using
saddle or equivalent
3. In cases where the Outdoor unit is installed abovethe Indoor unit perform the following. Tape the piping and connecting cable from down to
up. Secure the taped piping along the exterior wall. Form
a trap to prevent water entering the room. Fix the piping onto the wall by saddle or equivalent.
Pull the right andthe left side. Screw
• Trap is required to prevent water from enteringinto electrical parts.
Plasticband
Taping
Drain hose
Pipings
Connectingcable
Power supplycord
Seal a small opening around the pipings with gum type sealer.
Seal a small opening around the pipings with gum type sealer.
Trap
Trap
Downward slope
Do not raise Accumulateddrain water Tip of drain hose
dipped in waterAir
WavingWaterleakage
Waterleakage Ditch
Less than 50mm gap
Waterleakage
(4) Checking the drainage (5) Form the piping
Service Manual 53
Installation
(6) Air Purging of the Pipings and indoor unitThe air which contains moisture remaining in the is refrigeration cycle may cause a malfunction on thecompressor.
1. Confirm that both the liquid side valve and the gas side valve are set to the closed position.2. After connecting the piping, check the joints for gas leakage with gas leak detector.3. Remove the service port nut, and connect the gauge manifold and the vacuum pump to the service port
by the charge hose.4. Vacuum the indoor unit and the connecting pipes until the pressure in them lowers to below-76cmHg.5. Disconnect the charge hose and fit the nut to the service port.
(Tightening torque: 1.8kg.m)6. Remove the valve stem nuts, and fully open the stems of the 2-way and 3-way valves with a hexagon
wrench.7. Tighten the valve stem nuts of the 2-way valve and 3-way valve.
Indoor unit
Outdoor unit
Liquid side
Closed
Gas side
2-Wayvalve
Closed3-Wayvalve
manifold gauge
Indoor unit Liquid side
Closed
Gas side
2-Wayvalve
Closed3-Wayvalve
Vacuum pump
Hi- handle(OPEN)
Low-handle(OPEN)
54 MPS Multi Air Conditioner
Installation
(7) Maximum Length of Pipe and Freon Extra Charge
Multi Piping Type
36k 45m 15m 3m 7.5m 7.5m(148ft) (49.2ft) (9.8ft) (24.6ft) (24.6ft)
Capacity(Btu/h)Max total length
of all pipes(A+B+C)
Max length ofeach pipe(A/B/C)
Min length ofeach pipe(A/B/C)
Max Elevationbetween eachindoor unit and
outdoor unit (h1)
Max elevationbetween indoor
units (h2)
h2
h2
h1h1
A
B C
Oil trap
h1
CAUTION: Capacity is based on standard length and maximum allowancelength is on the basis of reliability. Oil trap should be installed every 5~7meters (16.4~23.0ft).
12K 1/2" 1/4"7.5m 30g/m
(24.6ft) (0.32oz/ft)
Gas Liquid Standard LengthAdditional
Refrigerant
Indoor Capacity(Btu/h)
Pipe Size
Service Manual 55
Installation
(8) Test running
Battery Cover
Discharge air
Bolt
Tubing connection
Settlement of Outdoor Unit
• Anchor the outdoor unit with a bolt and nut(ø10cm) tightly and horizontally on a concrete orrigid mount.
• When installing on the wall, roof or rooftop,anchor the mounting base securely with a nail orwire assuming the influence of wind and earth-quake.
• In the case when the vibration of the unit is con-veyed to the house, settle the unit with an anti-vibration rubber.
2) Evaluation of the performance1. Measure the temperature of the intake and
discharge air.2. Ensure the difference between the intake
temperature and the discharge one is morethan 8°C.
1) Connection of power supply1. Connect the power supply cord to the inde-
pendent power supply.2. Prepare the remote control.
• Insert two batteries provided.Remove the battery cover from the remote con-troller.
• Slide the cover according to the arrow direction.
Insert the two batteries.(Two "R03" or "AAA" dry-cell batteries or equiv-alent.)
• Be sure that the (+) and (-) directions are cor-rect.
• Be sure that both batteries are new.
Re-attach the cover.
• Slide it back into position.
3. Operate the unit at cooling operation modefor fifteen minutes or more.
56 MPS Multi Air Conditioner
Operation
Operation(1) Name and Function-Remote Control (Door Closed)
Signal transmitter
Transmits the signalsto the room air conditioner.
REMOTE CONTROL
6
1
3
5
4
2
Flip-up door(closed)
Signal transmitterSTART/STOP BUTTONOperation starts when this button is pressed and stopswhen the button is pressed again.
OPERATION MODE SELECTION BUTTONUsed to select the operation mode.
ROOM TEMPERATURE SETTING BUTTONSUsed to select the room temperature.
INDOOR FAN SPEED SELECTORUsed to select fan speed in four stepslow, medium, high, or CHAOS.
JET COOLUsed to start or stop the speedcooling. (Speed cooling operatessuper high fan speed in cooling mode.)
CHAOS SWING BUTTONUsed to stop or start louver movement andset the desired up/down airflow direction.
1
2
3
4
5
6
Service Manual 57
Operation
(2) Name and Function-Remote Control (Door Opened)
Signal transmitter
Transmits the signalsto the room air conditioner.
REMOTE CONTROL
ON OFF
SET CANCEL
˚C/˚F
Signal transmitter
4
5
6
7
8
1
2
3
1
2
3
4
5
6
7
8
ON/OFF TIMER BUTTONSUsed to set the time of starting and stopping operation.
TIME SETTING BUTTONSUsed to adjust the time.
TIMER SET/CANCEL BUTTONSUsed to set the timer when the desired time is obtained andto cancel the Timer operation.
SLEEP MODE AUTO BUTTONUsed to set Sleep Mode Auto operation.
AIR CIRCULATION BUTTONUsed to circulate the room air without cooling or heating(turns indoor fan on/off).
ROOM TEMPERATURE CHECKING BUTTONUsed to check the room temperature.
˚C TO ˚F SWITCHING BUTTON
RESET BUTTONUsed prior to resetting time or after replacing batteries.
58 MPS Multi Air Conditioner
Disassembly of the parts (Indoor unit)
Disassembly of the parts (Indoor unit)Warning :Disconnect the unit from power supply before mak-ing any checks.Be sure the power switch is set to “OFF”.
To remove the Grille from the Chassis.• Set the up-and-down air discharge louver to open
position (horizontally) by finger pressure.• Remove the securing screws• To remove the Grille, pull the lower left and right
side of the grille toward you (slightly tilted) and liftit straight upward.
1. To remove the sensor, housing connect, stepmotor conductor with sensor holder, Motor,Evaporator & P.C.B.
Screw
Step MotorConductor
MotorConductor
SensorConductor
Service Manual 59
Disassembly of the parts (Indoor unit)
2. To remove the Control Box.• Remove securing screws.• Pull the control box out from the chassis care-
fully.
3. To remove the Discharge Grille.• Pull the discharge grille out from the chassis
carefully.
4. To remove the Evaporator.• Remove screws securing the evaporator and
the holder eva.
• Unhook the tab on the right inside of the chas-sis at the same time, slightly pull the evapora-tor toward you until the tab is clear of the slot.
5. To remove the Cross-Flow Fan• Loosen the screw securing the cross-flow fan
to the fan motor (do not remove).• Lift up the right side of the cross-flow fan and
the fan motor, separate the fan motor from thecross-flow fan.
• Remove the left end of the cross-flow fan fromthe self-aligning bearing.
60 MPS Multi Air Conditioner
Exploded View and Replacement Parts List
Exploded View and Replacement Parts List
1353
16
2687
12
2671
1013
5311
3542
10
2499
51
1523
02
1355
00
1353
14
1599
01
3428
00
1314
1073
3010
3468
12
2632
30-1
2632
30-2
2687
14
3521
50
1468
11
3521
1B
3590
11
1. Indoor Unit
HMC036KDT1, HMH036KDT1
Service Manual 61
Exploded View and Replacement Parts List
PART No.
HMC036KDT1 HMH036KDT1
131410 CHASSIS ASSEMBLY 3141A20003D 3141A20003D R
135311 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A10023X 3531A10023X R
135316 GRILLE ASSEMBLY, FRONT 3531A10099J 3531A10099H R
135500 COVER 3550A10107A 3550A10107A R
146811 MOTOR ASSEMBLY, STEP 4681AR2727H 4681AR2727H R
152302 FILTER(MECH), A/C 5230A20004A 5230A20004A R
159901 VANE,HORIZONTAL 5990A30007A 5990A30007A R
249951 CONTROL BOX ASSEMBLY, INDOOR 4995A00003B 4995A00003A R
263230-1 THERMISTOR ASSEMBLY 6323A20003A 6323A20003A R
263230-2 THERMISTOR ASSEMBLY 6323A20024A 6323A20024A R
267110 REMOTE CONTROLLER ASSEMBLY 6711A20025M 6711A20026T R
268712 PWB(PCB) ASSEMBLY, DISPLAY 6871A30009Q 6871A30009Q R
268714 PWB(PCB) ASSEMBLY, MAIN 6871A20502B 6871A20502A R
342800 BEARING 3H02821B 3H02821B R
346812 MOTOR ASSEMBLY, DC 4681AR2295H 4681AR2295H R
35211B TUBE ASSEMBLY, TUBING 2H02449J 2H02449J R
352150 HOSE ASSEMBLY, DRAIN 5251AR2575H 5251AR2575H R
354210 EVAPORATOR ASSEMBLY, FIRST 5421A20032D 5421A20032D R
359011 FAN ASSEMBLY, CROSS FLOW 5901AR6141C 5901AR6141C R
733010 PLATE ASSEMBLY, INSTALL 1H00843A 1H00843A R
135314 GRILLE ASSY,INLET SUB 3531A10032W 3531A10032X R
DESCRIPTIONSVC
CODELOCATION
No.
Parts List - Indoor Unit
62 MPS Multi Air Conditioner
Exploded View and Replacement Parts List
HMC036KDT1
5468
10
5590
10
5522
03-1
5522
03-2
5541
60-2
5541
60-1
5675
02
5540
31
4479
10
4304
10
4355
12
1353
01
4372
11
7382
90
7382
81
1372
13-2
1372
13-1
1353
14
5484
90
5521
12
5521
13
5521
17
5614
11-1
5614
11-2
5614
11-3
2632
30-1
2632
30-2
6499
50
6687
11-2
6687
11-1
W0C
ZZ-1
W0C
ZZ-2
4355
11
2. Outdoor Unit
Service Manual 63
Exploded View and Replacement Parts List
PART No.
HMC036KDT1
135301 GRILLE, DISCHARGE 3530A20006B R
135314 GRILLE, REAR 3530A10176B R
263230-1 THERMISTOR ASSEMBLY 6323A20028A R
263230-2 THERMISTOR ASSEMBLY 6323A20026A R
430410 BASE ASSEMBLY, OUTDOOR 3041AP7177D R
435511 COVER ASSEMBLY, CONTROL(OUTDOOR) 3551A10044B R
435512 COVER ASSEMBLY, TOP(OUTDOOR) 3H03266H R
437211 PANEL ASSEMBLY, FRONT(OUTDOOR) 3721A10109A R
447910 BARRIER ASSEMBLY, OUTDOOR 4791A10019B R
546810 MOTOR ASSEMBLY, OUTDOOR 4681AR1392X R
548490 ACCUMULATOR ASSEMBLY(MECH) 5211A21233B R
552112 TUBE ASSEMBLY, CONDENSER IN 5211A11010C R
552113 TUBE ASSEMBLY, CONDENSER OUT 5211A12001C R
552117 TUBE ASSEMBLY, SUCTION(OUTDOOR) 5211A10446C R
554031 CONDENSER ASSEMBLY, BENT 5403A20168C R
559010 FAN ASSEMBLY, PROPELLER 5901A10033A R
649950 CONTROL BOX ASSEMBLY, OUTDOOR 4995A00002B R
668711-1 PWB(PCB) ASSEMBLY, MAIN(AC) 6871A20500B R
668711-2 PWB(PCB) ASSEMBLY, MAIN(OUTDOOR) 6871A20479B R
137213-1 PANEL ASSEMBLY, SIDE 3721A10110A R
137213-2 PANEL ASSEMBLY, SIDE 3721A10111C R
552203-1 VALVE, SERVICE 2H01890U R
552203-2 VALVE, SERVICE 2H02479R R
554160-1 COMPRESSOR 2520UHGK2EA R
554160-2 COMPRESSOR 2520UMMK2BA R
561411-1 COIL ASSEMBLY, EXPANSION 6141A20018D R
561411-2 COIL ASSEMBLY, EXPANSION 6141A20018E R
561411-3 COIL ASSEMBLY, EXPANSION 6141A20018F R
W0CZZ-1 CAPACITOR, DRAWING 0CZZA20007Q R
W0CZZ-2 CAPACITOR, DRAWING 2H01451S R
567502 O.L.P 2H00599W R
738290 MANUAL, OWNERS 3828A22014K R
738281 MANUAL, SERVICE 3828A20412R R
DESCRIPTIONSVC
CODELOCATION
No.
Parts List - Outdoor Unit
64 MPS Multi Air Conditioner
Exploded View and Replacement Parts List
HMH036KDT1
5468
10
5590
10
5522
03-1
5522
03-2
5541
60-2
5541
60-1
5540
31
4479
10
5675
02
4304
10
4355
12
1353
01
4372
11
1372
13-2
1372
13-1
1353
14
2632
30-1
2632
30-2
6499
50
6687
11-2
6687
11-1
W0C
ZZ-1
W0C
ZZ-2
5484
90
5521
12
5521
1F55
2113
5521
16
5614
10-1
5614
11-1
5614
11-2
5614
11-3
5614
10-2
4355
11
7382
90
7382
81
Service Manual 65
Exploded View and Replacement Parts List
PART No.
HMH036KDT1
135301 GRILLE, DISCHARGE 3530A20006B R
135314 GRILLE, REAR 3530A10176B R
263230-1 THERMISTOR ASSEMBLY 6323A20028A R
263230-2 THERMISTOR ASSEMBLY 6323A20026A R
430410 BASE ASSEMBLY, OUTDOOR 3041AP7177D R
435511 COVER ASSEMBLY, CONTROL(OUTDOOR) 3551A10044A R
435512 COVER ASSEMBLY, TOP(OUTDOOR) 3H03266H R
437211 PANEL ASSEMBLY, FRONT(OUTDOOR) 3721A10109A R
447910 BARRIER ASSEMBLY, OUTDOOR 4791A10019B R
546810 MOTOR ASSEMBLY, OUTDOOR 4681AR1392X R
548490 ACCUMULATOR ASSEMBLY(MECH) 5211A21233A R
552112 TUBE ASSEMBLY, CONDENSER IN 5211A11010C R
552113 TUBE ASSEMBLY, CONDENSER OUT 5211A12001C R
552116 TUBE ASSEMBLY, REVERSING 5211A10448A R
554031 CONDENSER ASSEMBLY, BENT 5403A20168A R
559010 FAN ASSEMBLY, PROPELLER 5901A10033A R
561410-1 COIL ASSEMBLY, REVERSING VALVE 6141A20021A R
561410-2 COIL ASSEMBLY, SOLENOID 6141A20022A R
649950 CONTROL BOX ASSEMBLY, OUTDOOR 4995A00002A R
668711-1 PWB(PCB) ASSEMBLY, MAIN(AC) 6871A20500B R
668711-2 PWB(PCB) ASSEMBLY, MAIN(OUTDOOR) 6871A20479A R
137213-1 PANEL ASSEMBLY, SIDE 3721A10110A R
137213-2 PANEL ASSEMBLY, SIDE 3721A10111C R
552203-1 VALVE, SERVICE 2H01890U R
552203-2 VALVE, SERVICE 2H02479R R
554160-1 COMPRESSOR 2520UHGK2EA R
554160-2 COMPRESSOR 2520UMMK2BA R
561411-1 COIL ASSEMBLY, EXPANSION 6141A20018D R
561411-2 COIL ASSEMBLY, EXPANSION 6141A20018E R
561411-3 COIL ASSEMBLY, EXPANSION 6141A20018F R
W0CZZ-1 CAPACITOR, DRAWING 0CZZA20007Q R
W0CZZ-2 CAPACITOR, DRAWING 2H01451S R
567502 O.L.P 2H00599W R
55211F TUBE ASSEMBLY, SOLENOIDE 5211A00007A R
738290 MANUAL, OWNERS 3828A22014K R
738281 MANUAL, SERVICE 3828A20412R R
DESCRIPTIONSVC
CODELOCATION
No.
Parts List - Outdoor Unit
P/No.: 3828A20412RApril 2004
Printed in Korea