SERVICE & MAINTENANCE MANUAL - AHI Carrier : …ahi-carrier.ae/download.asp?frm=docs/cm_011.pdf · TABLE OF CONTENTS PAGE NO. 1. Precautions for Service & Maintenance 1 2. Split System

03502566

SERVICE & MAINTENANCE MANUAL

Revision : (0) - 2009

Specifications are subject to change without notice according to Carrier Policy of continuous development.

TABLE OF CONTENTS

PAGE NO.

1. Precautions for Service & Maintenance 1

2. Split System Description 2

3. Unit Model Designation 3

4. Unit Models & Part Numbers 3

5. Options 4

6. System Operating Limits 5

7. System Safety Protections 5

8. Wiring Diagrams 6

9. Field Electrical Connections Matching 7

10. Refrigeration Cycle – 53QG Series 8

11. Replacing Batteries of Remote Control 10

12. Emergency Operation of Air-Conditioner 11

13. Standard and Optional Air Filters 12

14. Air Filter Cleaning 13

15. Indoor Unit Cleaning 14

16. Considerations After Operational Season and Before Long Shutdown Period Of Air Conditioner 14

17. Periodical Checks 15

18. Self Diagnostic Function For Malfunction Detection 16

19. Trouble Shooting 17

1

1. PRECAUTIONS FOR SERVICE AND MAINTENANCE

SAFETY CONSIDERATIONS

• Installation of air conditioning equipment can be hazardous due to system pressures and

electrical components. • The installation of the air conditioner must be done by Carrier or one of Carrier authorized

dealers.

WARNING

• This installation manual describes the installation procedures of Carrier split room air

conditioner consisting of an outdoor unit and an indoor unit manufactured by Carrier.

What is not covered in Carrier warranty? 1- Failure due to wrong electrical connections between the electrical power supply and

circuit breaker of air conditioner leading to fire due to short-circuiting. As these electrical connections are owner’s responsibility.

2- Failure due to Misuse, Abusing, overloading, negligence of air filters cleaning and negligence of instructions included in the owner’s manual.

3- Failure due to Accident / Weather Natural catastrophe, accident due to bad weather (Hail Storm, Sand Storm, lightning, Flooding, Acid Rain and Air Borne fallout, etc).

4- Failure due to damages during transport done through the owner.

5- Failure due to any modifications in the product done through the owner and not done by

Carrier or one of Carrier authorized dealers.

6- Failure due to Installation done through the owner and not done by Carrier or one of Carrier authorized dealers.

7- Failure due to Service and Maintenance done through the owner and not done by Carrier or one of Carrier authorized dealers.

8- Failure due to repair by using non-genuine Carrier Parts, or substituting other than Carrier parts done through the owner and not done by Carrier or one of Carrier authorized dealers.

9- Product normal sound ( refrigerant – moving parts )

10- Inconvenience or commercial loss is not covered.

The decision of Carrier in ascertaining the same will be final. Any such repairs will be carried - out at the expense of the owner ( purchaser ).

!

2

Outdoor Unit

2. SPLIT SYSTEM DESCRIPTION

1: Remote control signal receiver.

2: Operating status leds. 6: Supply air outlet.

3: Supply air flap. 7: Characteristics nameplate.

4: Air return grille. 8: Inter connecting tubing.

5: Air filter ( behind return grille ). 9: Condensate drain line.

Floor/Wall/Ceiling Split System 53VMC14-18-24

2

45

6

7

8

9

13

Indoor Unit

3

3. UNIT MODEL DESIGNATION

4. UNIT MODELS & PART NUMBERS

SPLIT SYSTEMS FOR LOCAL MARKET

System Indoor Unit Outdoor Unit Compressor Model P/N Model P/N Model P/N Type Supplier

53VMC14-H 46303279 42VMC14-H 46303290 38VMC14-H 46303278 Rotary LG 53VMC18A-H 46303118 42VMC18A-H 46303276 38VMC18A-H 46303117 Rotary Hitachi

HEAT PUMP

53VMC24-H 46303359 42VMC24-H 46303292 38QG24-H 46302128 Rotary LG

SPLIT SYSTEMS FOR MILD AMBIENT EXPORT MARKETS Indoor Unit Outdoor Unit

Compressor Model P/N Model P/N Type Supplier 42VMC14-H 46303221 38QG15-H 46303300 Rotary Mitsushita 42VMC18A-H 46303533 38VMC18A-H 46303534 Rotary Hitachi

HEAT PUMP

42VMC24-H 46303233 38QG24-H 46303644 Rotary LG

Indoor Unit Outdoor Unit Compressor Model P/N Model P/N Type Supplier

42VMC14-C 46303293 38QG15-C 46302110 Rotary Mitsushita 42VMC18-C 46303294 38QG18-C 46303517 Rotary Mitsushita

COOL ONLY

42VMC24-C 46303295 38QG24-C 46303365 Rotary Mitsushita

SPLIT SYSTEM FOR HIGH AMBIENT EXPORT MARKETS Indoor Unit Outdoor Unit

Compressor Model P/N Model P/N Type Supplier 42VMC18-H 46303219 38QG18-H 46303516 Rotary Mitsushita

HEAT PUMP

42VMC24-H 46303220 38QG24-H 46303363 Rotary Mitsushita



COOL ONLY


VMC QG

42 = Indoor Unit 38 =Outdoor Unit

18

System Cooling Capacity At ISO Conditions 14 = 14,000 Btu/hr 18 = 18,000 Btu/hr 24 = 24,000 Btu/hr

Unit Family

H C

Unit Type H = Heat Pump C = Cool Only

42 38

4

5. OPTIONS

DESCREPTION CONFIGURATION QTY USAGE Electrical Cables Set for Heat Pump System Main Power cable Outdoor Unit–Circuit Breaker Power cable Outdoor Unit – Indoor Unit

Control & Defrost cable Outdoor Unit–Circuit Breaker P/N : 02500894

Set of 3 To electrically connect between circuit breaker, outdoor and indoor units

Electrical Cables Set for Cool Only System Main Power cable Outdoor Unit – Indoor Unit

Power & Control cable Outdoor Unit – Indoor Unit P/N : 02500893


Optional set of air filters (Carbon air filter + Photo-catalytic air filter) P/N : 02802563

( for 42VMC14-18-24 )

Set of 2 To eliminate odor and cigarette smoke in the room air respectively.

PTC starting device for 38QG15-18-24

P/N : 02501579

1 To start the compressor in outdoor unit at low voltage down 187V

Floor support for indoor units 42VMC14-18-24

P/N : 46300822

1 To mount the indoor unit on the floor in case of impossibility of mounting the unit on the wall

5

6. SYSTEM OPERATING LIMITS *

COOLING HEATING

Difference Dry Bulb Temp. C°

Wet Bulb Temp. C° Difference Dry Bulb

Temp. C° Wet Bulb Temp. C°

Indoor temperature Maximum Minimum

32 21

23 15

Indoor temperature

Maximum

27

-

Outdoor temperature Maximum Minimum

55 20

- -

Outdoor temperature

Maximum

21

-

MAIN POWER SUPPLY

Difference Nominal 200-240V/1PH/50HZ

Min. Voltage 187

Max. Voltage 264

NOTES: * When the unit is operated above or below these limits for a long time, system diagnostics may detect

a malfunction and the unit will not operate properly. ** During heat pump operation the system will undergo several defrost cycles to remove ice that might

collect on the outdoor unit in very low ambient temperature. After completion of defrosts cycle, the system will normally operate.

7. SYSTEM SAFETY PROTECTION

7-1 FOR HEAT PUMP SYSTEM

PROTECTION TYPE PROTECTION EFFECT OPERATION MODE WHEN ON Cold draft prevention Indoor fan off Heating mode During unit operation

Defrost cycle Indoor fan off Heating mode During unit operation Indoor coil

Freeze protection Compressor off Cooling mode During unit operation

Against frequent Compressor cycling

Compressor Time delay

Cooling or heating modes

At unit start-up or change of operating mode

7-2 FOR COOL ONLY SYSTEM

PROTECTION TYPE PROTECTION EFFECT OPERATION MODE WHEN ON Indoor coil



Compressor Time delay Cooling mode At unit start-up or change

of operating mode

6

8. WIRING DIAGRAMS

7

WIRING DIAGRAMS (Cont.)

8

LEGEND Earth L Live power supply. N Neutral power supply. R Live connection indoor/outdoor unit. C Neutral connection indoor/outdoor unit. Y Compressor control. O Reversing valve control. W2 Outdoor fan motor control. S Outdoor coil sensor.

LEGEND Earth L Live power supply. N Neutral power supply. R Live connection indoor/outdoor unit. C Neutral connection indoor/outdoor unit. Y Compressor control.

9. FIELD ELECTRICAL CONNECTIONS MATCHING - Connect the power supply to the outdoor unit and then get the power required for the indoor unit from the outdoor unit. - Refer to wiring diagrams and stickers-caution sticked inside the outdoor & indoor units. 9-1 CONNECTING ELECTRICAL WIRING FOR HEAT PUMP SYSTEM

Sizes of electrical wires connecting outdoor and indoor units R C Y O W2 S

1 mm2 1 mm2 1 mm2 1 mm2 1 mm2 1 mm2

9-2 CONNECTING ELECTRICAL WIRING FOR COOL ONLY SYSTEM

Sizes of electrical wires connecting outdoor and indoor units

R C Y 1 mm2 1 mm2 1 mm2

200 - 240V ~ 50Hz

Circuit Breaker

Main Switch

R C Y

R C Y

200 - 240V ~ 50Hz

Circuit Breaker

Main Switch

Indoor Unit

Outdoor Unit

Outdoor Unit

Indoor Unit

9

11. REFRIGERATION CYCLE – 53VMC SERIES

HEAT PUMP SYSTEM

10

REFRIGERATION CYCLE – 53VMC SERIES (Cont.)

COOL ONLY SYSTEM

11

12. REPLACING BATTERIES OF REMOTE CONTROL Model 42QG&42VMC 14-18-24

12-1 HOW TO INSERT BATTERIES: (a) Remove the cover of battery compartment at the back of the remote

control by pressing the tab toward inside, in the direction of the arrow.

(b) Mount the two-battery size AAA 1.5 Volt supplied with the remote control. Then close the cover of the battery component.

Note: During mounting of batteries check battery symbols (+, -) indicated in batteries compartment.

NOTES:

1. The remote control uses two alkaline batteries (1.5V, LRO03x2). 2. Do not use used batteries or batteries of different types, as this may cause the air conditioner to

malfunction. 3. Batteries should only be changed after turning OFF the air conditioner. 4. The average battery life during normal use is approximately one year.

5. When the symbol appears in the display of the remote control, this indicates that the batteries are exhausted and required to be replaced.

WHEN DIRECTING THE TRANSMITTER OF WIRELESS REMOTE CONTROL TO THE RECEIVER OF INDOOR UNIT FROM A CERTAIN LOCATION, CHECK THE FOLLOWING POINTS: 1- Avoid direct sunlight on the receiver of indoor unit, which may interfere with good signal reception 2- No obstructions such as curtains or plants should be between the remote control and the receiver of

indoor unit. 3- The maximum operating range for the remote control is approximately 5 meters. 4- The remote control must be directed toward the receiver of indoor unit when pressing the buttons of the

desired functions. An acoustical acknowledgement sound (beep) will indicate that signal has been received.

12

13. EMERGENCY OPERATION OF AIR-CONDITIONER

INDOOR UNITS 42VMC14-18-24-30-36 SERIES

Indoor unit LED’s

• GREEN LED (1) shows the following conditions : - Fault codes (diagnostic); - During normal operation, the LED is lit. Once a failure occurs, the LED flashes at intervals of 0.5 seconds. The fault code is deduced from the number of times the LED flashes. Between one flash cycle and the next a pause of 5 seconds elapses. If the timer mode is active and the unit is immediately restarted after a stop, this LED flashes until a new signal is sent to the indoor unit.

• YELLOW LED (2) shows the operation in timer mode. During this operation in this operating mode, the LED is lit . If the time mode is active and the unit is immediately restarted after a stop, this LED flashes until a new signal is sent to the indoor unit.

• RED LED (3) gives the following information: - During normal operation, the LED is OFF; - During defrost the LED is lit; - During the test for wired connection, the LED flashes at 1- second intervals.

Button (5) : “EMERGENCY” Can be used when the remote control is lost or inoperative. Use a screwdriver to press the push-button. Emergency operation: When the unit is in the OFF mode and the emergency is pressed for 5 seconds, the system will operate as follows: - Automatic mode. - Temperature preset to 22ºC. - Automatic fan speed. - Louvers set automatically according to operating mode. - Timer Functions are inactive.

When a signal is received by the remote control, system operates accordingly.

1 : Green Led 2 : Yellow Led 3 : Red Led 4 : Remote control signal receiver 5 : “Emergency” button

13

14. STANDARD AND OPTIONAL AIR FILTERS

14-1 The indoor unit of the split air conditioner is factory supplied with standard anti-bacteria filters to eliminate dust and lint. 14-2 The optional set of air filters can be field installed inside the indoor unit. The optional set of air filters consists of 2 ( two ) filters:

1. Optional Active carbon air filter is particularly effective in eliminating odor.

2. Optional Photo-catalytic air filter effectively eliminates cigarette smoke in the room air.

14-3 Installation steps of optional set of air filters

Step (1): After opening return air grill, pull the standard air filters.

Step (2): Install optional air filters inside the unit top in the guides specified for filters then install standard filters.

Step (3): Install return air grille and close it downwards.

Standard Air FiltersAnti-bacteria

Optional Air Filters

Active carbonair filter ( Black )

Photo catalytic air filter ( Blue )

14

15. AIR FILTERS CLEANING

- The air filters supplied with the unit are high-efficiency washable and recyclable filters. - To establish, how frequently these should be cleaned, the operating conditions must be taken

in to account.

- REMOVAL OF STANDARD AIR FILTERS FOR CLEANING:

CONSOLE / UNDERCEILING INDOOR UNITS

Open the return grille without removing the two screws and the central clamp from their position.

Remove acrylic-fiber filters, carbon filter and photocatalytic filter for cleaning. A: Standard filters B: Carbon filter (Optional) C: Photo catalytic filter (Optional)

- CLEANING OF STANDARD AIR FILTERS: First clean the filter with a vacuum cleaner every month. And Rinse filter under running water, and dry it

- CLEANING OF CARBON FILTER (OPTIONAL FILTER): First clean the filter by washing it under running water with a neutral detergent every three months. Leave the filter 2/3 hours to dry in sunlight

- CLEANING OF PHOTOCATALYTIC FILTER (OPTIONAL FILTER): First clean the filter by washing it under running water without any detergent every three months. Leave the filter 6 hours to dry and regenerate in sunlight

Notes: (1) After cleaning, put the filters back in the correct positions. (2) Before operating the air conditioner, check that air filters are in their places inside unit. (3) Replace carbon and photocatalytic filters every two years.

CAB

15

12h

16. INDOOR UNIT CLEANING Turn the unit off and switch the mains supply off.

Use only a clean, damp and soapy cloth. Do not pour any liquids on the unit. Do not use flammable liquid, solvents or abrasive powders: these can damage the casing.

Avoid any contact with sources of heat, as hot air can damage the unit casing. Clean the infrared control using a damp cloth.

17. CONSIDERATIONS BEFORE A LONG SHUTDOWN PERIOD OF AIR CONDITIONER

Keep the indoor unit in operation for half a day in the ventilation (fan only) mode in order to dry all internal parts.

Switch electric mains supply off.

Take batteries out of the remote control.

Clean indoor and outdoor units.

Clean the air filters and reposition them in the unit.

16

18. PERIODICAL CHECKS For a good operation of the air conditioner it is recommended to carry out checks and maintenance as indicated. Recommended maintenance intervals may very depending on the installation environment, e.g. dusty zones, etc.

Indoor Unit Every Month Every Year

Clean air filter ●(1)

Clean drain pipe (2) ●

Change controller batteries ●

Outdoor Unit Every Month Every Year

Clean outdoor coil from outside (2) ●

Clean outdoor coil from inside ●

Blow air over electric parts (2) ●

Check electric connection tightening (2) ●

Clean fan wheel (2) ●

Check fan tightening (2) ●

Clean drain pan (2) ● (1) Increase frequency in dusty zones. (2) Operations to be carried out by qualified service personnel.

17

19. SELF DIAGNOSTIC FUNCTION FOR MALFUNCTION DETECTION

EXPLAINATION OF SELF-DIAGNOSTIC FUNCTION

• Self-diagnostic function is the key for success of air conditioner operation. • The printed circuit boards existing inside the indoor unit are equipped with self-diagnostic function

to detect malfunction and automatically stops the operation at the air conditioner.

• Once a malfunction is detected, the diagnostic control section will force the system mode to OFF for 3 minutes. After the OFF delay, system mode releases and allowed returning to its normal state. The system will be allowed to restart on its own.

• The diagnostic control section will allow the system to fail 5 consecutive times before shutting down the system.

• If the system is performing an active defrost, both the compressor drive and reversing valve malfunction test will be cancelled and reinitiated after the following compressor OFF-ON cycle.

• The Unit on lamp is scanned every half-second and the error codes are displayed by the flashing frequency of unit on lamp. The error codes are displayed during SHUT-OFF (3 minutes off and after the 5th retry failure).

Malfunction Reason

Flashing Frequency

Allowed Mode

Return Air Sensor 3 Fan Only Indoor Coil Sensor 4 Fan Only Compressor Drive 9 Fan Only Electronic Control PCB (EEPROM) 10 Fan Only

Notes : 1- Prior to the malfunction repair, disconnect the electrical mains supply by moving the circuit

breaker to OFF position.

2- After repairing the malfunction: 2-1 Press Reset button (5) 2-2 connect the electrical main supply by moving the circuit breaker to ON position 2-3 operate the air conditioner by using the wireless remote control.

1 5

1 : Green led flashes if there is a malfunction 5 : Reset Button

18

15. TROUBLE SHOOTING

TROUBLE REASON ACTION After batteries have been placed into the remote control, the display is not lit.

Batteries are exhausted or have the wrong polarity.

Replace batteries or check polarity.

When pressing the recessed clock adjustment button, hour figures on display do not flash.

Recessed button has not been pressed correctly.

Press with a round point, avoid exerting strong pressure

Recessed button for time setting is blocked due to excessive pressure during use.

Check and repair. When pressing any button, all symbols appear on display.

Remote control has been irreversibly damaged.

Replace with a new one.

Main switch is OFF. Switch it to ON position. Remote control batteries are exhausted.

Replace batteries.

Remote control has not been pointed correctly to the receiver of indoor unit.

Turn remote control OFF and repeat the operation in the correct direction.

There are obstacles (curtains, walls, etc.) between the remote control and the indoor unit

Repeat the operation after having removed the obstacles.

Receiver on the indoor unit or the remote control is under intense sun radiation.

Avoid direct sun on the unit, shut curtains or shades.

When pressing start button, unit does not acknowledge signal with a beep.

OR When pressing stop button, unit does not acknowledge signal with a beep.

OR When pressing any function button, the remote control shows the function requested on the display, but unit does not acknowledge signal receipt with a beep and does not carry out the function.

Signal transmission is obstructed by severe interference from an electromagnetic field.

Avoid sending signals when computers or household appliances (Food processors, coffee makers, etc.) are operating close by cellular or cordless telephones may also interfere with the control.

Main supply switch is OFF Switch to ON Fuses or main switch are blown Replace fuses Protection against frequent compressor cycling is ON

Wait for 3 minutes.

Air conditioner will not start.

Selected temperature is higher than the room temperature in the cooling mode (or lower in the heating mode).

Correct selected temperature.

19

TROUBLE SHOOTING (Cont.)

TROUBLE REASON ACTION Air flow cannot circulate freely Remove obstructions. Dirty filters reduce air quantity circulating. Clean air filters Doors and/or windows are open. Close doors and windows Fan speed has been set to “Low” Set fan speed at high speed. Air flow direction is not correct Adjust airflow direction as per

the mode chosen.

Air conditioner is not supplying enough cooling.

Selected temperature is higher than the room temperature in the cooling mode.


Air flow cannot circulate freely Remove obstructions. Dirty filters reduce air quantity circulating. Clean air filters Doors and/or windows are open. Close doors and windows Fan speed has been set to “Low” Set fan speed at high speed. Air flow direction is not correct Adjust airflow direction as per

the mode chosen.

Air conditioner is not supplying enough heating.

Selected temperature is Lower than the room temperature in the heating mode.


Green LED is flashing System malfunction. Contact service center after having made the following checks: • Air filters are clean. • Air circulation is not obstructed. • Outdoor unit coil is not obstructed with

a severe reduction of air circulation.

Refer to the installation manual for fault code reading to be notified to service center. Restart air conditioner after having corrected the faults.

A slight mist is emitted from the indoor unit during cooling

The cool air from the indoor unit is coming into contact with the room air.

Normal operation

A slight whistling noise is heard when the air conditioner starts or stops.

This is due to the refrigerant beginning to circulate or an adjustment of the refrigerant pressures.

Normal operation

Water vapor (mist) emanating from the outdoor unit.

It is normal in heat pump operation, when defrost is automatically activated.

Normal operation

Unpleasant smells coming from the indoor unit.

Unpleasant smells can be caused by substances accumulated in the air filters

Switch the system OFF and contact an authorized service center to have the filters cleaned. Restart unit in the ventilation (fan only) mode and open windows to change room air.

Strange noises coming from the indoor unit.

Occasionally the indoor unit can emit some strange short noises during operation or when it has stopped. These are generally due to the of temperature changes on the plastic parts.

Normal operation

Starting in heating mode for heat pump systems

If the system starts at low ambient temperatures, it takes a little while to reach a comfortable room temperature. When the system is started by the remote control, it emits a signal beep, but the louvre does not swing and the fan does not run until the operating temperature has been reached.

Normal operation

03502567 Revision : (0) - 2009

Specifications are subject to change without notice according to Carrier Policy of continuous development.

SERVICE & MAINTENANCE MANUAL

TABLE OF CONTENTS

PAGE NO.

1. Precautions for Service & Maintenance 1

2. Split System Description 2

3. Unit Model Designation 3

4. Unit Models & Part Numbers 3

5. Options 4

6. System Operating Limits 5

7. System Safety Protections 5

8. Wiring Diagrams 6

9. Field Electrical Connections Matching 7

10. Refrigeration Cycle – 53QG Series 8

11. Replacing Batteries of Remote Control 10

12. Emergency Operation of Air-Conditioner 11

13. Standard and Optional Air Filters 12

14. Air Filter Cleaning 13

15. Indoor Unit Cleaning 14

16. Considerations After Operational Season and Before Long Shutdown Period Of Air Conditioner 14

17. Periodical Checks 15

18. Self Diagnostic Function For Malfunction Detection 16

19. Trouble Shooting 17

1

1. PRECAUTIONS FOR SERVICE AND MAINTENANCE

SAFETY CONSIDERATIONS

• Installation and servicing of air conditioning equipment can be hazardous due to system pressures and electrical components. Only trained and qualified service personnel should install, repair or service the air conditioning equipment.

• When working on air conditioning equipment, observe precautions in the literature, tags and

labels attached to the unit and other safety codes. • Wear safety glasses and gloves. Use quenching cloth and have fire extinguisher available for

all brazing operations

WARNING • This installation manual describes the installation procedures of Carrier split room air

conditioner consisting of an outdoor unit and an indoor unit manufactured by Carrier.

What is not covered in Carrier warranty?

1- Failure due to wrong electrical connections between the electrical power supply and circuit breaker of air conditioner leading to fire due to short-circuiting.

2- Failure due to Misuse, Abusing, overloading, negligence of air filters cleaning and

negligence of operation manual instructions.

3- Failure due to Accident / Weather Natural catastrophe, accident due to bad weather (Hail Storm, Sand Storm, lightning, Flooding, Acid Rain and Air Borne fallout, etc).

4- Failure due to Damages during transport done by customer and not by Carrier or one

of its certified.

5- Failure due to any modifications en the product done by customer and not by Carrier or one of its certified dealers.

6- Failure due to Improper Installation done by customer and not by Carrier or one of its

certified dealers.

7- Failure due to Improper Service and Maintenance done by customer and not by Carrier or one of its certified dealers.

8- Failure due to Improper repair by using non-genuine Carrier Parts, or substituting

other than Carrier parts done by customer and not by Carrier or one of its certified dealers.

9- Product normal sound ( refrigerant – moving parts )

10- Inconvenience or commercial loss is not covered.

The decision of Carrier in ascertaining the same will be final. Any such repairs will be carried out at the expense of the purchaser ( owner ).

!

2

Outdoor Unit

2. SPLIT SYSTEM DESCRIPTION

1: Remote control signal receiver.

2: Operating status leds. 6: Supply air outlet.

3: Supply air flap. 7: Characteristics nameplate.

4: Air return grille. 8: Inter connecting tubing.

5: Air filter ( behind return grille ). 9: Condensate drain line.

Indoor Unit

Floor/Wall/Ceiling Split System 53VMC30-36

45

8

637 21

9

3

3. UNIT MODEL DESIGNATION

4. UNIT MODELS & PART NUMBERS

SPLIT SYSTEMS FOR LOCAL MARKET

System Indoor Unit Outdoor Unit Compressor Model P/N Model P/N Model P/N Type Supplier

53VMC30-H 46303478 42VMC30-H 46303296 38VMC30-H 46303120 Rotary Siam

HEAT PUMP

53VMC36-H 46303479 42VMC36-H 46303297 38VMC36-H 46303121 Recip. Copeland

SPLIT SYSTEMS FOR MILD AMBIENT EXPORT MARKETS Indoor Unit Outdoor Unit

Compressor Model P/N Model P/N Type Supplier 42VMC30-H 46303224 38VMC30-H 46303645 Rotary Siam

HEAT PUMP

42VMC36-H 46303288 38VMC36-H 46303136 Recip. Copeland


42VMC30-C 46303298 38VMC30-C 46303122 Recip. Copeland

COOL ONLY


SPLIT SYSTEM FOR HIGH AMBIENT EXPORT MARKETS Indoor Unit Outdoor Unit

Compressor Model P/N Model P/N Type Supplier 42VMC30-H 46303224 38VMC30-H 46303124 Recip. Copeland

HEAT PUMP

42VMC36-H 38VMC36-H 46303136 Recip. Copeland



COOL ONLY


VMC

42 = Indoor Unit 38 =Outdoor Unit

30

System Cooling Capacity At ISO Conditions 30 = 30,000 Btu/hr 36 = 36,000 Btu/hr

Unit Family

H C

Unit Type H = Heat Pump C = Cool Only

42 38

4

5. OPTIONS

DESCREPTION CONFIGURATION QTY USAGE Electrical Cables Set for Heat Pump System Main Power cable Outdoor Unit–Circuit Breaker Power cable Outdoor Unit – Indoor Unit

Control & Defrost cable Outdoor Unit–Circuit Breaker P/N : 02500894


Electrical Cables Set for Cool Only System Main Power cable Outdoor Unit – Indoor Unit

Power & Control cable Outdoor Unit – Indoor Unit P/N : 02500893


Optional set of air filters (Carbon air filter + Photo-catalytic air filter) P/N : 36302007

( for 42VMC30-36 )

Set of 2 To eliminate odor and cigarette smoke in the room air respectively.

PTC starting device for 38VMC30

P/N : 02501579


PTC starting device for 38VMC36

P/N : 02501578


Plastic holder for remote control

P/N : 02501547

1 To mount remote control on the wall

Anchor screw and screw P/N : 02102211

1 To fix Plastic holder for remote control on the wall

Floor Mount Grommets for indoor units 42VMC30-36

P/N : 02803109 4

To mount the indoor unit on the floor in case of impossibility of mounting the unit on the wall

5

6. SYSTEM OPERATING LIMITS *

COOLING HEATING

Difference Dry Bulb Temp. C°

Wet Bulb Temp. C° Difference Dry Bulb

Temp. C° Wet Bulb Temp. C°

Indoor temperature Maximum Minimum

32 21

23 15

Indoor temperature

Maximum

27

-

Outdoor temperature Maximum Minimum

55 20

- -

Outdoor temperature

Maximum

21

-

MAIN POWER SUPPLY

Difference Nominal 200-240V/1PH/50HZ

Min. Voltage 187

Max. Voltage 264

NOTES: * When the unit is operated above or below these limits for a long time, system diagnostics may detect

a malfunction and the unit will not operate properly. ** During heat pump operation the system will undergo several defrost cycles to remove ice that might

collect on the outdoor unit in very low ambient temperature. After completion of defrosts cycle, the system will normally operate.

7. SYSTEM SAFETY PROTECTION

7-1 FOR HEAT PUMP SYSTEM

PROTECTION TYPE PROTECTION EFFECT OPERATION MODE WHEN ON Cold draft prevention Indoor fan off Heating mode During unit operation

Defrost cycle Indoor fan off Heating mode During unit operation Indoor coil



Compressor Time delay

Cooling or heating modes

At unit start-up or change of operating mode

7-2 FOR COOL ONLY SYSTEM

PROTECTION TYPE PROTECTION EFFECT OPERATION MODE WHEN ON Indoor coil



Compressor Time delay Cooling mode At unit start-up or change

of operating mode

6

8. WIRING DIAGRAMS

7

WIRING DIAGRAMS (Cont.)

8

LEGEND Earth L Live power supply. N Neutral power supply. R Live connection indoor/outdoor unit. C Neutral connection indoor/outdoor unit. Y Compressor control. O Reversing valve control. W2 Outdoor fan motor control. S Outdoor coil sensor.

LEGEND Earth L Live power supply. N Neutral power supply. R Live connection indoor/outdoor unit. C Neutral connection indoor/outdoor unit. Y Compressor control.

9. FIELD ELECTRICAL CONNECTIONS MATCHING - Connect the power supply to the outdoor unit and then get the power required for the indoor unit from the outdoor unit. - Refer to wiring diagrams and stickers-caution sticked inside the outdoor & indoor units. 9-1 CONNECTING ELECTRICAL WIRING FOR HEAT PUMP SYSTEM

Sizes of electrical wires connecting outdoor and indoor units R C Y O W2 S

1 mm2 1 mm2 1 mm2 1 mm2 1 mm2 1 mm2

9-2 CONNECTING ELECTRICAL WIRING FOR COOL ONLY SYSTEM

Sizes of electrical wires connecting outdoor and indoor units

R C Y 1 mm2 1 mm2 1 mm2

200 - 240V ~ 50Hz

Circuit Breaker

Main Switch

R C Y

R C Y

200 - 240V ~ 50Hz

Circuit Breaker

Main Switch

Indoor Unit

Outdoor Unit

Outdoor Unit

Indoor Unit

9

10. REFRIGERATION CYCLE – 53VMC SERIES

HEAT PUMP SYSTEM

10

REFRIGERATION CYCLE – 53VMC SERIES (Cont.) COOL ONLY SYSTEM

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11. CONSIDERATIONS FOR REMOTE CONTROL

HOW TO INSERT BATTERIES:

(a) Remove the cover of battery compartment at the back of the remote control by sliding it out in the direction of the arrow.

(b) Mount the two-battery size AAA 1.5 Volt supplied with the remote control. Then close the cover of the battery component.

Note: During mounting of batteries check battery symbols (+, -) indicated in

batteries compartment.

(c) Press reset button with a sharp object if the remote control is not operating properly.

NOTES: 1. The remote control uses two alkaline batteries (1.5V, LRO03x2). 2. Do not use used batteries or batteries of different types, as this may cause the air conditioner to

malfunction. 3. Batteries should only be changed after turning OFF the air conditioner. 4. The average battery life during normal use is approximately one year. 5. If the air conditioner does not operate normally after replacing the batteries, remove the batteries,

refit them and press button “O” again after 5 seconds. 6. When the symbol appears in the display of the remote control, this indicates that the

batteries are exhausted and required to be replaced

INSTRUCTIONS WHEN USING WIRELESS REMOTE CONTROL 1- Avoid direct sunlight on the receiver of indoor unit, which may interfere with good signal reception

and the air conditioner may not work properly. Draw the curtains to avoid direct sunlight. 2- No obstructions such as curtains, doors or other materials should be between the remote control and the receiver of indoor unit to avoid blocking the signals from the remote control to the unit. 3- The maximum operating range for the remote control is approximately 5 meters. 4- The remote control must be directed toward the receiver of indoor unit when pressing the buttons of

the desired functions. You can hear acoustical acknowledgement sound (beep) will indicate that signal has been received.

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13. EMERGENCY OPERATION OF AIR-CONDITIONER

Indoor unit leds

• GREEN LED (1) shows the following conditions : - Fault codes (diagnostic); - During normal operation, the LED is lit. Once a failure occurs, the LED flashes at intervals of 0.5 seconds. The fault code is deduced from the number of times the LED flashes. Between one flash cycle and the next a pause of 5 seconds elapses. If the timer mode is active and the unit is immediately restarted after a stop, this LED flashes until a new signal is sent to the indoor unit.

• YELLOW LED (2) shows the operation in timer mode. During this operation in this operating mode, the LED is lit . If the time mode is active and the unit is immediately restarted after a stop, this LED flashes until a new signal is sent to the indoor unit.

• RED LED (3) gives the following information: - During normal operation, the LED is OFF; - During defrost the LED is lit; - During the test for wired connection, the LED flashes at 1- second intervals.

EMEGENCY OPERATION (5) Can be used when the remote control is lost or inoperative. Use a screwdriver to press the push-button. Emergency operation: When the unit is in the OFF mode and the emergency is pressed for 5 seconds, the system will operate as follows: - Automatic mode. - Temperature preset to 22ºC. - Automatic fan speed. - Louvers set automatically according to operating mode. - Timer Functions are inactive.

When a signal is received by the remote control, system operates accordingly.

1 : Green Led 2 : Yellow Led 3 : Red Led 4 : Remote control

signal receiver 5 : “Emergency” button

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14. STANDARD AND OPTIONAL AIR FILTERS

14-1 The indoor unit of the split air conditioner is factory supplied with standard anti-bacteria filters to eliminate dust and lint. 14-2 The optional set of air filters can be field installed inside the indoor unit. The optional set of air filters consists of 2 ( two ) filters:

1. Optional Active carbon air filter is particularly effective in eliminating odor.

2. Optional Photo-catalytic air filter effectively eliminates cigarette smoke in the room air.

14-3 Installation steps of optional set of air filters

Step (1): After opening return air grill, pull the standard air filters.

Step (2): Install optional air filters inside the unit top in the guides specified for filters then install standard filters.

Step (3): Install return air grille and close it downwards.

Standard Air FiltersAnti-bacteria

Optional Air Filters

Active carbonair filter ( Black )

Photo catalytic air filter ( Blue )

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15. AIR FILTERS CLEANING

- The air filters supplied with the unit are high-efficiency washable and recyclable filters. - To establish, how frequently these should be cleaned, the operating conditions must be taken

in to account.

- REMOVAL OF STANDARD AIR FILTERS FOR CLEANING:

CONSOLE / UNDERCEILING INDOOR UNITS

Open the return grille without removing the two screws and the central clamp from their position.

Remove acrylic-fiber filters, carbon filter and photocatalytic filter for cleaning. A: Standard filters B: Carbon filter (Optional) C: Photo catalytic filter (Optional)

- CLEANING OF STANDARD AIR FILTERS: First clean the filter with a vacuum cleaner every month. And Rinse filter under running water, and dry it

- CLEANING OF CARBON FILTER (OPTIONAL FILTER): First clean the filter by washing it under running water with a neutral detergent every three months. Leave the filter 2/3 hours to dry in sunlight

- CLEANING OF PHOTOCATALYTIC FILTER (OPTIONAL FILTER): First clean the filter by washing it under running water without any detergent every three months. Leave the filter 6 hours to dry and regenerate in sunlight

Notes: (1) After cleaning, put the filters back in the correct positions. (2) Before operating the air conditioner, check that air filters are in their places inside unit. (3) Replace carbon and photocatalytic filters every two years.

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12h

16. INDOOR UNIT CLEANING Turn the unit off and switch the mains supply off. Use only a clean, damp and soapy cloth. Do not pour any liquids on the unit. Do not use flammable liquid, solvents or abrasive powders: these can damage the casing.

Avoid any contact with sources of heat, as hot air can damage the unit casing. Clean the infrared control using a damp cloth.

17. CONSIDERATIONS BEFORE A LONG SHUTDOWN PERIOD OF AIR CONDITIONER

Keep the indoor unit in operation for half a day in the ventilation (fan only) mode in order to dry all internal parts.

Switch electric mains supply off.

Take batteries out of the remote control.

Clean indoor and outdoor units.

Clean the air filters and reposition them in the unit.

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18. PERIODICAL CHECKS For a good operation of the air conditioner it is recommended to carry out checks and maintenance as indicated. Recommended maintenance intervals may very depending on the installation environment, e.g. dusty zones, etc.

Indoor Unit Every Month Every Year

Clean air filter ●(1)

Clean drain pipe (2) ●

Change controller batteries ●

Outdoor Unit Every Month Every Year

Clean outdoor coil from outside (2) ●

Clean outdoor coil from inside ●

Blow air over electric parts (2) ●

Check electric connection tightening (2) ●

Clean fan wheel (2) ●

Check fan tightening (2) ●

Clean drain pan (2) ● (1) Increase frequency in dusty zones. (2) Operations to be carried out by qualified service personnel.

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19. SELF DIAGNOSTIC FUNCTION FOR MALFUNCTION DETECTION

EXPLAINATION OF SELF-DIAGNOSTIC FUNCTION

• Self-diagnostic function is the key for success of air conditioner operation. • The printed circuit boards existing inside the indoor unit are equipped with self-diagnostic function

to detect malfunction and automatically stops the operation at the air conditioner.

• Once a malfunction is detected, the diagnostic control section will force the system mode to OFF for 3 minutes. After the OFF delay, system mode releases and allowed returning to its normal state. The system will be allowed to restart on its own.

• The diagnostic control section will allow the system to fail 5 consecutive times before shutting down the system.

• If the system is performing an active defrost, both the compressor drive and reversing valve malfunction test will be cancelled and reinitiated after the following compressor OFF-ON cycle.

• The Unit on lamp is scanned every half-second and the error codes are displayed by the flashing frequency of unit on lamp. The error codes are displayed during SHUT-OFF (3 minutes off and after the 5th retry failure).

Indoor Units 42VMC Series

Malfunction Reason

Flashing Frequency

Allowed Mode

Return Air Sensor 3 Fan Only Indoor Coil Sensor 4 Fan Only Compressor Drive 9 Fan Only Electronic Control PCB (EEPROM) 10 Fan Only

Notes : 1- Prior to the malfunction repair, disconnect the electrical mains supply by moving the circuit

breaker to OFF position.

2- After repairing the malfunction: 2-1 Press Reset button (5) 2-2 connect the electrical main supply by moving the circuit breaker to ON position 2-3 operate the air conditioner by using the wireless remote control.

1 5

1 : Green led flashes if there is a malfunction 5 : Reset Button

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20. TROUBLE SHOOTING

TROUBLE REASON ACTION Power failure Fuse blown or / and circuit breaker tripped

Call power company Replace fuse or reset circuit breaker

Detective contactor Check contactor and replace if necessary Low line voltage Determine cause and eliminate Incorrect or loose wiring Check wiring diagram and rewire correctly

Compressor and outdoor fan will not start

Temp. setting too low Reset temp. setting Faulty wiring or loose connections in compressor circuit

Check wiring and repair or correct

Compressor motor burned out, stuck or internal over-load open

Replace compressor and determine cause

Compressor will not start, but outdoor fan runs

Detective run capacitor Check capacitor and replace if necessary Refrigerant over or under charge Blow refrigerant, evacuate system and

recharge Air or non condensable refrigerant in system Blow refrigerant, evacuate system and

recharge Detective compressor Replace and determine cause Low or too high line voltage Determine cause and correct Blocked outdoor coil Determine cause and replace Outdoor fan stopped Determine cause and replace Detective run capacitor Check capacitor and replace if necessary Faulty fan motor of outdoor section Check motor and replace if necessary Restriction in refrigerant system Locate restriction and remove

Compressor runs bur cycles on internal overload (other than normally satisfying thermostat)

Capillary or Accurate restricted or ice clogged. Blow refrigerant, evacuate system and recharge

System undersized for load Decrease load or increase system size

Temp. setting too low Reset temp setting Defective outdoor fan Check for source and replace Air or non condensable refrigerant in system Blow refrigerant, evacuate system and

recharge

Compressor operates continuously

Air restricted or indoor section filter dirty Clean filter or remove restriction Dirty outdoor coil Clean coil Detective outdoor fan Check fan and replace if necessary Refrigerant over charged Purge excess refrigerant Air or non condensable refrigerant in system Blow refrigerant, evacuate system and

recharge

Discharge pressure is too high

Outdoor section air restricted Remove restriction Low refrigerant charge Check for leaks, repair and recharge Restriction in liquid tube Remove restriction

Discharge pressure is too low

Indoor section air filter dirty Clear filter Reversing valve hung up or internal leak Check reversing and replace if necessary Internal pressure relief open Check for source and eliminate

Suction pressure is too high

Refrigerant over charged Purge excess refrigerant Low refrigerant charge Check for leaks, repair and recharge Indoor unit frosted See next trouble Low indoor air or short cycling Eliminate cause, check for fan Restriction in suction tube working

Suction pressure is too low

Capillary or accurate restricted or ice clogged Locate restriction and remove Blow refrigerant, evacuate system and recharge

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TROUBLE SHOOTING (Cont.)

TROUBLE REASON ACTION Detective fan motor capacitor Replace

Loose leads at fan motor Check for cause and eliminate

Fan motor burned out Replace

Outdoor fan stopped or cycling on overload

Motor bearing sized Check for cause and eliminate

After batteries have been placed into the remote control, the display is not lit.

Batteries are exhausted or have the wrong polarity.

Replace batteries or check polarity.

When pressing the recessed lock adjustment button, hour figures on display do not flash.

Recessed button has not been pressed correctly.

Press with a round point, avoid exerting strong pressure

Recessed button for time setting is blocked due to excessive pressure during use.

Check and repair. When pressing any button, all symbols appear on display.

Remote control has been irreversibly damaged. Replace with a new one.

Main switch is OFF. Switch it to ON position.

Remote control batteries are exhausted. Replace batteries.

Remote control has not been pointed correctly to the receiver of indoor unit.

Turn remote control OFF and repeat the operation in the correct direction.

There are obstacles (curtains, walls, etc.) between the remote control and the indoor unit

Repeat the operation after having removed the obstacles.

Receiver on the indoor unit or the remote control is under intense sun radiation.

Avoid direct sun on the unit, shut curtains or shades.

When pressing start button, unit does not acknowledge signal with a beep.

OR When pressing stop button, unit does not acknowledge signal with a beep.

OR When pressing any function button, the remote control shows the function requested on the display, but unit does not acknowledge signal receipt with a beep and does not carry out the function.

Signal transmission is obstructed by severe interference from an electromagnetic field.

Avoid sending signals when computers or household appliances (Food processors, coffee makers, etc.) are operating close by cellular or cordless telephones may also interfere with the control.

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TROUBLE CHART (Cont.)

TROUBLE REASON ACTION When pressing any button, display will not change

The triangle symbols 2 ▲is on, as another signal is being transmitted.

Wait for signal 2 ▲ to disappear and repeat the operation.

Main supply switch is OFF Switch to ON

Fuses or main switch are blown Replace fuses

Protection against frequent compressor cycling is ON

Wait for 3 minutes.

Air conditioner will not start.

Selected temperature is higher than the room temperature in the cooling mode (or lower in the heating mode).


Air flow cannot circulate freely Remove obstructions.

Dirty filters reduce air quantity circulating. Clean air filters

Doors and/or windows are open. Close doors and windows

Fan speed has been set to “Low” Set fan speed at high speed.

Air flow direction is not correct Adjust airflow direction as per the mode chosen.

Air conditioner is not supplying enough cooling.

Selected temperature is higher than the room temperature in the cooling mode.


Air flow cannot circulate freely Remove obstructions.

Dirty filters reduce air quantity circulating. Clean air filters

Doors and/or windows are open. Close doors and windows

Fan speed has been set to “Low” Set fan speed at high speed.

Air flow direction is not correct Adjust airflow direction as per the mode chosen.

Air conditioner is not supplying enough heating.

Selected temperature is Lower than the room temperature in the heating mode.


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TROUBLE CHART (Cont.)

TROUBLE REASON ACTION

Green LED is flashing System malfunction contact service center after having made the following checks:

• Air filters are clean.

• Air circulation is not obstructed.

• Outdoor unit coil is not obstructed with a service reduction of air circulation.

Refer to the installation manual for fault code reading to be notified to service center. Restart air conditioner after having corrected the faults.

A slight mist is emitted from the indoor unit during cooling

The cool air from the indoor unit is coming into contact with the room air.

Normal operation

A slight whistling noise is heard when is heard when the air conditioner starts or stops.

This is due to the refrigerant beginning to circulate or an adjustment of the refrigerant pressures.

Normal operation

Water vapor (mist) emanating from the outdoor unit.

It is normal in heat pump operation, when defrost is automatically activated.

Normal operation

Unpleasant smells coming from the indoor unit.

Unpleasant smells can be caused by substances accumulated in the air filters

Switch the system OFF and contact an authorized service center to have the filters cleaned. Restart unit in the ventilation (fan only) mode and open windows to change room air.

Strange noises coming from the indoor unit.

Occasionally the indoor unit can emit some strange short noises during operation or when it has stopped. These are generally due to the of temperature changes on the plastic parts.

Normal operation

Starting in heating mode for heat pump systems

If the system starts at low ambient temperatures, it takes a little while to reach a comfortable room temperature. When the system is started by the remote control, it emits a signal beep, but the louvre does not swing and the fan does not run until the operating temperature has been reached.

Normal operation

Documents

SERVICE & MAINTENANCE MANUAL - AHI Carrier : …ahi-carrier.ae/download.asp?frm=docs/cm_011.pdf · TABLE OF CONTENTS PAGE NO. 1. Precautions for Service & Maintenance 1 2. Split System