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Akai Portable AC Error Codes and Troubleshooting

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Akai Portable Ac Maintenance Dubai

Akai Portable AC Error Codes and Troubleshooting

Before asking for repair or changing unit, please check:

Problems: The unit does not work

Causes: Power supply fault:

  1. Not plug in;
  2. Bad plug or socket;
  3. Fuse broken or wire broken;

Suggest Solutions:

  1. Plug in correctly;
  2. Change the plug or the socket;
  3. Send the unit to service center to change the fuse ;( fuse: 3.15A 250V )

Problems: The unit stop running automatically

Causes: Timer is set or room temperature is lower than set temperature;

Suggest Solutions: Close the TIMER or wait for it to run automatically;

Problems: In cooling mode, no cool air coming out;

Causes: Room temperature is lower than set temperature;

Suggest Solutions: Make the setting temperature lower than the room temperature; if it still does not work, call the local technician for repairing

Problems: Error code “E1” in LED window

Causes: Environment temperature sensor is broken.

Suggest Solutions: Replace the temperature sensor

Problems: Error code “E2” in LED window

Causes: Temperature sensor on the evaporator is broken

Suggest Solutions: Replace the sensor

Problems: Error code “E3” in LED window

Causes: Cooling system malfunction caused by the lack of refrigerant

Suggest Solutions: Contact the local repairing technician directly

Problems: Error code “E4” in LED window the red FULL light is bright

Causes: Water tray is full in the heating mode, but the unit is still working

Suggest Solutions: Empty water in water plate

Safety Cautions

  1. Do not use unit near gas appliance, fires or in the vicinity of flammable liquids.
  2. Do not let children put their fingers into the air outlet to avoid danger.
  3. Do not incline the unit more than 35° while moving the unit.
  4. Do not beat or extrude unit to prevent unit broken, do not vibrate the unit.
  5. Keep the unit two meters away from TV sets or radios to avoid the risk of electromagnetic interface.
  6. Do not use unit with the air outlet too close to walls or cover the outlet to avoid overheating.
  7. Do not use the unit in a very crowded room.
  8. Do not use the unit directly under sunshine to avoid surface color fading.
  9. Do not use the unit in water or near water to avoid leakage of electricity.
  10. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or similar qualified person in order to avoid a hazard.
  11. when the room temperature is higher than 25 degrees, it is better not to use the heating function.

Special Guide Line

  1. Do not incline the unit more than 5° degree, if so, please turn off power supply immediately and ask for advice from your local dealer.
  2. Do not spray insecticide or other chemicals to avoid deformation of plastic case.
  3. The unit, due to its moving feature, it can be moved from room to room and it is different from window type or split type air conditioner. If the unit cannot cool down the room temperature efficiently, it is not the unit’s quality problem. The unit can only work efficiently in certain room area. ( see technical specification )
  4. In order to prolong the unit’s lifetime, please empty the water completely in the water tray at the bottom of the unit while the unit is not going to use for a long period of time.
  5. The unit can drain water automatically. It is not necessary to use the hose to drain the water under the cooling mode because the condenser can evaporate the water.
  6. when turning “on” or “off” the unit under the heating mode, some noise of airflow inside the unit can be heard obviously, this is not a faulty problem, no need to repair.

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Airwell Water Source Heat Pump Error Codes

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Airwell Water Source Heat Pump Error Codes

Meanings of Error Code for Line Controller

  • Wind return sensor error 1 1 Antifreeze indoor coil of system 1 16 Refer to unit type
  • Indoor coil sensor error of system 1 2 Antifreeze indoor coil of system 2 17 Refer to unit type
  • Water outlet sensor error of system 1 3 Low temperature heating prohibited 18 Refer to unit type
  • Refrigerant leakage of system 1 4 Water flow switch error 19 Refer to unit type
  • Compressor overload of system 1 5 Condensate drainage error 20 Refer to unit type
  • Low pressure switch protection of system 1
  • 6 Outdoor coil sensor error 21 Refer to unit type
  • High pressure switch protection of system 1 7 Reserved 22
  • High/Low water temperature protection 8 Reserved 23
  • Indoor coil sensor error of system 2 9 Reserved 24
  • Water outlet sensor error of system 2 10 Low voltage 25 Refer to unit type
  • Refrigerant leakage of system 2 11 High voltage 26 Refer to unit type
  • Compressor overload of system 2 12 R phase loss 27 Refer to unit type
  • Low pressure switch protection of system 2 13 S phase loss 28 Refer to unit type
  • High pressure switch protection of system 2 14 T phase loss 29 Refer to unit type
  • Communication error 15 Phase error 30 Refer to unit type.

Airwell Maintenance and Servicing Dubai

  1. Normal maintenance of the appliances is generally limited to replacing filters.
  2. The filters must be changed at regular intervals. The frequency is dependent on the specific application conditions. Certain installations, for example in hotels where there large amounts of fluff due to the frequent bedding changes and the presence of fitted carpets, require more frequent filter changes. It is recommended that the filters are checked every 60 days during the first year of operation in order to determine the frequency required. If it is not possible to see light through the filter when it is held up to the sun or in front of a strong light, the filter must be replaced. A more rigorous standard of cleanliness may be required.
  3. The condensates tray must be checked annually and cleaned and rinsed if necessary.
  4. On commissioning, a record of voltages, current draw and temperature variances should be made. Thereafter, on an annual basis further measurements can be compared to these initial values and will be useful for giving an overall indication for the equipment’s general condition.
  5. The activation of the unit’s safety protection devices is usually caused by air or water problems. These forced stoppages are a normal protection measure. Ensure that there is no dirt or debris in the air or water circuits. Check the water and air temperatures and flows (clogged filters).
Airwell Water Source Heat Pump Manual PDF

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Airwell Air Conditioner Error Codes and troubleshooting

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Airwell Ac Maintenance Dubai

Airwell air troubleshooting

If your Airwell air conditioner in Dubai shows any strange symptoms, is not cooling, or is not working at all, the table below will be of great help. Find the symptom in the first column, analyze the possible causes and try the suggested solutions. It is very likely that there’s just a minor issue, and so appliance troubleshooting will not take much time and effort.

Airwell IU-MINV-HW-9H air conditioner troubleshooting

Air conditioners Airwell IU-MINV-HW-9H represent split systems in Dubai. These systems use the new refrigerant R410A. The air conditioners of this type are fit with cooling, heating and drying functions, which can be detailed as follows: microprocessor controlled operation, one-touch remote control, timers, economy mode, automatic and 3-step fan speed, air sweep control, high power cooling, smell reduction mode, air clean filter and some other options.

Trouble Possible Cause Remedy
Air conditioner does not run at all. 1. Power failure. 1. Restore power.
2. Leakage circuit breaker tripped. 2. Contact service center.
3. Line voltage is too low. 3. Consult your electrician or dealer.
4. Operation button is OFF. 4. Press the button again.
5. Batteries in remote control unit have run down. 5. Replace batteries.
OPERATION lamp blinks and air conditioner does not operate. Trouble in wiring system. Contact service center.
Compressor runs but soon stops. Obstruction in front of condenser coil. Remove obstruction.
Poor cooling (or heating) performance. 1. Dirty or clogged air filter. 1. Clean air filter to improve airflow.
2. Heat source or many people in room. 2. Eliminate heat source if possible.
3. Doors and/or windows are open. 3. Shut them to keep the heat (or cold) out.
4. Obstacle near air intake or air discharge port. 4. Remove it to ensure good airflow.
5. Thermostat is set too high for cooling (or too low for heating). 5. Set the temperature lower (or higher).
6. (Outdoor temperature is too low for heating.) 6. (Consult your dealer or try to use a back-up heater.)
Clicking sound is heard from the air conditioner. In heating or cooling operation, any plastic parts may expand or shrink due to a sudden temperature change. In this event, a clicking sound may occur. This is normal, and the sound will soon disappear.
OPERATION lamp lights but outdoor unit will not run. 1. The use of cellular phones near the air conditioner may cause disturbance to its normal operation. 1. Turn off the power then restart the air conditioner after 1 minute.
2. Consult your dealer.

Airwell PNX009 air conditioner troubleshooting

Air conditioners Airwell PNX009 are multi split systems, which use R410A as refrigerant. These are full line multi-tubing systems with three or four connected indoor units. They represent a high-level technology product, which is intended for residential and commercial use providing comfort, energy saving and low noise operation.

No SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
1. Indoor unit power supply indicator (Red LED) does not light up. No power supply Check power supply. If OK, check display and display wiring, if OK, replace controller
2. Indoor unit does not respond to remote control message Remote control message not reached the indoor unit Check remote control batteries, if OK, check display and display wiring, if OK, replace display PCB. If still not OK replace controller
3. Indoor unit responds to remote control message but Operate indicator (Green LED) does not light up Problem with display PCB Replace display PCB.
If still not OK replace controller
4. Indoor fan does not start (louvers are opened and Green LED is ON) Unit in heat mode and coil is still not warm Change to cool mode
Outdoor unit is in opposite mode Change operation mode
Problem with controller or capacitor Change to high speed and Check power supply to motor is higher than 130VAC (for triack controlled motor) or higher than 220VAC for fixed speed motors, if OK replace capacitor, if not OK replace controller
5. Indoor fan works when unit is OFF, and indoor fan speed is not changed by remote control command. Controller problem Replace controller
6. Water leakage from indoor unit Indoor unit drainage tube is blocked Check and open drainage tube
7. One indoor unit or more are operating in cool mode with no capacity, and the other units have water leaks/freezing problems The communication wires of the indoor units are switched Check and correct the communication wires connection
8. One indoor or more are operating in heat mode with a limited capacity, and the coil on the other units are very hot.
9. Outdoor unit display board and leds are off No power supply Check the connections and the wiring on the main terminal – Repair if needed.
Check PFC choke connection – Repair if needed
PFC Chock coil Check the PFC Chock coil
Burnt fuse Check 25Afuse on the Filter
EEV problem Check EEV
10. Compressor operates but one or more units generates no capacity Refrigerant leakage Check refrigeration system
Indoor coil block Clean filters and/or remove block
Outdoor coil block Remove block and/or avoid air by-pass
EEV problem Check EEV
11. Compressor is over heated and unit does not generate capacity Refrigerant leakage Check refrigeration system
Indoor coil block Clean filters and/or remove block
Outdoor coil block Remove block and/or avoid air by-pass
12. Compressor stops during operation Electronic control Check diagnostics
Refrigerant leakage Check refrigeration system
13. Not all units are operating Communication problems Check diagnostic
14. Compressor does not start Electronics control problem or protection
15. Unit works in wrong mode (cool instead of heat or heat instead of cool) Electronics or RV problem Check RV
16. All components are operating properly but no cooling or no heating Refrigerant leak Check refrigeration system
17. Compressor motor is generating noise and no suction occurs Phase order to compressor is wrong Check compressor phase order
18. Freezing of outdoor unit in heat mode and outdoor unit base is blocked with ice Connect base heater
19. The unit stop suddenly during operation EMC interference to the A/C unit Check for EMC problems
20. Indoor unit(s) Indicator(s) leds may flicker
21. Other home appliances operation is faulty such as noise appears in the television picture, or the picture is distorted or static occurs in the radio sound EMC interference by the A/C unit Check for EMC problems
22. All others Specific problems of indoor or outdoor units Check diagnostics

Airwell WNG9 AC troubleshooting

Air conditioners Airwell WNG9 belong to DUO N series. Such DUO multi split outdoor unit series comprise ST (cooling only) and RC (heat pump) models. They use R410A refrigerant. All such models have built-in deicing controller, outdoor coil with hydrophilic louver fins, metal sheets protected by anti- corrosion paint work for long life resistance, compressor located in the sound-insulating box.

SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
The power supply indicator (red led) doesn’t light up. There is no correct voltage between the line and neutral terminals on main P.C.B. -If the voltage is low repair power supply.
-If there is no voltage repair general wiring.
-If there is correct \outage replace main or display P.C.B’S
The operating indicator (green led) does not light up. The remote control batteries are discharged -Replace batteries of the remote control
The operating indicator (green led) does not light up when starting from unit.. Check main P.C.B and display P.C.B. -Replace P.C.B if necessary.
The indoor fan does not function correctly. Check the voltage between indoor fan terminals on the main P.C.B If there is voltage replace capacitor or motor.
The outdoor fan does not function correctly. Check the voltage between indoor fan terminals on the main P.C.B. If there is no voltage replace main P.C.B
There is voltage between outdoor fan terminals on the outdoor unit Replace capacitor or motor.
There is no voltage between outdoor fan terminals on the outdoor unit Check and repair electrical wiring between indoor and outdoor units.
The compressor does not start up. Check voltage on compressor terminals on the outdoor in it. (with ammeter) -If no voltage replace main P.C.B.
Check if there is correct voltage between compressor terminals on the outdoor in it. -If low voltage repair power supply.
-If the voltage correct replace capacitor or compressor.
-If there is no voltage repair electrical wiring between indoor and outdoor units.
The refrigeration system does not function correctly. Check for leaks or restrictions, with amp meter, pressure gauge or surface thermometer. Repair refrigeration system and charge refrigerant if necessary.
No cooing or heating only indoor fan works. Outdoor fan motor faulty or other fault caused, compressor overload protection cut out. -Replace P.C.B.
Outdoor fan blocked remove obstructions.
Only indoor fan and compressor working. Outdoor fan blocked. Remove obstructions.
Only indoor fan working. -Run capacitor of outdoor fan motor faulty. Replace capacitor.
-Winding of outdoor fan are shorted. -Replace motor.
No cooling or heating takes place, indoor and outdoor fans working. Overload safety device on compressor is cut out (low voltage or high temperature) Check for proper voltage, switch off power and try again after one hour.
Compressor run capacitor faulty. Replace compressor capacitor.
Compressor Endings are shorted. Replace compressor.
No air supply at indoor unit, compressor operates. Indoor fan motor is blocked or turns slowly, -indoor fan run capacitor faulty. Check voltage, repair wring if necessary.
motor Endings are shorted. -Check fan wheel if it is tight enough on motor shaft if necessary.
-Replace indoor fan motor.
Partial, limited air supply at indoor indoor unit. Lack of refrigerant (will accompanied by whistling noise) cause ice formation on indoor unit oil in cooling mode. -Charge the unit after localizing leak.
Water accumulates and overflow from indoor unit section. Oari tube or spout of chain pan clogged. -Disassemble plastic drain tube from spout of indoor unit drain pan.
Water dripping from outdoor unit base, an heating mode) Water drain outlet is clogged. -Open outdoor unit cover clean out water outlet,clean the base inside thoroughly.
Freeze-up of outdoor oil in heating mode, poor heating effect in room, indoor fan operates. -Faulty outdoor thermistor.
-Faulty control cable.
-outdoor unit air outlet is blocked.		 -Replace thermistor. -Repair control cable. -Remove obstructions.

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Actron AC Error Codes and Troubleshooting

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Actron AC Maintenance Dubai

In the usual event that a fault occurs with the Air Conditioner and the microprocessor will diagnose the fault (where possible) and display a fault code on the wall controller. The 7 Day Controller will display a code beginning with E (Eg E2) The 24 Hr Controller will display:

Actron AC Fault Codes:

Actron air conditioner ESP Unit Error Fault Codes

OUTDOOR CPU WALL CONTROLLER FAULT/FUNCTION
0 – Cooling Mode
1 – Heating Mode
2 – Heating compressor run time >20mins
3 – Heating Defrost
4 LOW speed flashes 
every 30s		 Over Heat or Anti-Freeze Protection mode (Reduced Capacity 
Mode)
5 – Heating mode – indoor coil pre-heat
6 E6 Fault discharge temperature
7 E7 Fault outdoor coil sensor (open or closed circuit)
8 E8 Fault outdoor discharge sensor (open or closed circuit)
9 E9 High or Low Pressure/Phase error (3 phase models only)*
– E2 Fault indoor coil out sensor
– E3 Fault room sensor(s) (open or closed circuit)
– E4 Fault indoor coil sensor (open or closed circuit)
  E5 Communication Fault

Actron air conditioner M Series (AM24 and AM7) Controller Error Fault Codes

OUTDOOR 
CPU		 AM24 WALL 
CONTROL		 AM7 WALL 
CONTROL		 FAULT/FUNCTION
0 – – Cooling Mode
1 – – Heating Mode
2 – – Heating Mode after 20 minutes of compressor run time. Defrost Standby.
3 – – Heating Mode De-ice cycle
5 – – Heating Mode Indoor coil pre-heat after defrost
7 E7 E7 Fault: Outdoor coil sensor (open circuit)
8 E7 E7 Fault: Outdoor coil sensor (closed circuit)
9 E9 E9 Fault: High or Low pressure tripped (Note: Some models have discharge sensor, which will also give the same fault code.)
  E5 E5 Communication error between outdoor and indoor.

Actron air D Series 24 Hour (AECSN) and 7 Day (AEC7N) Controller Error Fault Codes

OUTDOOR 
CPU		 24 HOUR 
(AECSN) WALL 
CONTROL		 7 DAY 
(AEC7N) WALL 
CONTROL		 FAULT/FUNCTION
0 – – Cooling Mode
1 – – Heating Mode
2 – – Heating Mode after 20 minutes of compressor run time. Defrost 
Standby.
3 – – Heating Mode De-ice cycle
5 – – Heating Mode Indoor coil pre-heat after defrost
7 7 E1 Fault: Outdoor coil sensor open circuit
8 7 E1 Fault: Outdoor coil sensor closed circuit
9 heat/cool 
flash)		 E2 Fault: High or Low pressure tripped (Note: Some models have 
discharge sensor, which will also
give the same fault code.)
– – E5 Communication error between outdoor and indoor.

Notes:
– Faults may not be displayed on the wall control until the fault occurs several times.
– Phase error will be indicated by a red light on the 3-phase relay.
– Phase correction must be applied to the incoming supply side.

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Acson AC Error Codes and Troubleshooting

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Ascon AC Maintenance Dubai

The code indication changes as shown below, and notifies with a long beep.

00: Normal

A1: Indoor Pcb Error

A3: Drain Pump Abnormal

A5: Antifreeze (Cooling)/Heat Exchanger Overheat (Heating)

A6: Indoor Fan Motor Abnormalah Electrical Air Cleaner Abnormal

C4: Indoor Heat Exchanger (1) Thermistor Short/open

C5: Indoor Heat Exchanger (2) Thermistor Short/open

C7: Louver Limit Switch Error

C9: Indoor Room Thermistor Short/open

E1: Outdoor Pcb Error

E3: High Pressure Protection

E4: Low Pressure Protection

E5: Compressor Motor Lock/Compressor Overloaded

E6: Compressor Start-up Error

E7: Outdoor Dc Fan Motor Lock

E8: Ac Input Over Current

E9: Exv Error 4 Way Valve Error

F3: Discharge Pipe Overheat

F6: Heat Exchanger Overheat

HO: Compressor Sensor System Error

H3: High Pressure Switch Error

H6: Compressor Feedback Detection Error

H7: Fan Motor Overloaded/Over current/Sensor Abnormal

H8: AC Current Sensor Error

Error Code Faulty Indication Error / Code Faulty Indication

E01: Require manual reset (possible causes)

E02: Compressor 1 high temperature (overload)

E03: Compressor 2 high temperature (overload)

E04: Compressor 3 high temperature (overload)

E05: Compressor 4 high temperature (overload)

E06: Compressor 1 high pressure trip / contact open

E07: Compressor 2 high pressure trip / contact open

E08: Compressor 3 high pressure trip / contact open

E09: Compressor 4 high pressure trip / contact open

E10: Compressor 1 trip/low refrigerant/outdoor abnormal

E11: Compressor 2 trip/low refrigerant/outdoor abnormal

E12: Compressor 3 trip/low refrigerant/outdoor abnormal

E13: Compressor 4 trip/low refrigerant/outdoor abnormal

E14: Room sensor short E32 Compressor 1 de-ice

E15: Room sensor open E33 Compressor 2 de-ice

E16: Indoor coil sensor 1 short E34 Compressor 3 de-ice

E17: Indoor coil sensor 2 short E35 Compressor 4 de-ice

E18: Indoor coil sensor 3 short

E19: Indoor coil sensor 4 short

E20: Indoor coil sensor 1 open

E21: Indoor coil sensor 2 open

E22: Indoor coil sensor 3 open

E23: Indoor coil sensor 4 open

E24: Outdoor coil sensor 1 short

E25: Outdoor coil sensor 2 short

E26: Outdoor coil sensor 3 short

E27: Outdoor coil sensor 4 short

E28: Outdoor coil sensor 1 open

E29: Outdoor coil sensor 2 open

E30: Outdoor coil sensor 3 open

E31: Outdoor coil sensor 4 open

E32: Compressor 1 de-ice

E33: Compressor 2 de-ice

E34: Compressor 3 de-ice

E35: Compressor 4 de-ice

Error Diagnosis by Wired Controller (MC301) Item Code Description

E0: System malfunction

E1: Sensor Broken (TH1 discharge Temp.)

E2: Sensor Broken (TH2 inlet coil 1#)

E3: Sensor Broken (TH3 mid coil 1#)

E4: Sensor Broken (TH4 inlet coil 2#)

E5: Sensor Broken (TH5 mid coil 2#)

E6: Sensor Broken (TH6 inlet coil 3#)

E7: Sensor Broken (TH7 mid coil 3#)

E8: Sensor Broken (TH8 ambient temp)

E9: Sensor Broken (TH9 outlet coil)

EA: Sensor Broken (TH10 subcool outlet)

EB: Sensor Broken (TH11 subcool suction)

EC: Sensor Broken (TH12 suction)

EF: Emergency Run

F0: Outdoor Storage Malfunction

F1: Sensor Broken (indoor inlet coil)

F2: Sensor Broken (indoor mid coil)

Error Diagnosis by Wired Controller (MC301) Item Code Description

F3: Sensor Broken (indoor outlet coil)

F4: Sensor Broken (indoor return air)

F5: Sensor Broken (indoor supply air

F6: Indoor and controller communication malfunction

F7: Ambient temp exceed the limit

F8: 4WV malfunction

F9: Refrigerant leakage

FA: Controller storage malfunction

FB: Water Pump (indoor water pump)

FC: Indoor and outdoor communication malfunction

FE: Master and slave communication malfunction

H0: Digital comp overload

H1: Fixed Comp1 overload

H2: Fixed Comp2 overload

H3: Fixed Comp3 overload

H4: High pressure too high

H5: Sensor broken, high pressure

H6: Discharge temp too high

L0: Super heat too low

L1: Low pressure too low

L2: Sensor broken, low pressure

10: System malfunction

11: Sensor broken (slave TH1 discharge temp)

12: Sensor broken (slave TH2 inlet coil 1#)

13: Sensor Broken (slave TH3 mid coil 1#)

14: Sensor broken (slave TH4 inlet coil 2#)

15: Sensor broken (slave TH5 mid coil 2#)

16: Sensor broken (slave TH6 inlet coil 3#)

17: Sensor broken (slave TH7 mid coil 3#)

18: Sensor broken (slave TH8 ambient temp)

19: Sensor broken (slave TH9 outlet coil)

1A: Sensor broken (slave TH10 subcool outlet)

1B: Sensor broken (slave TH11 subcool suction)

1C: Sensor Broken (slave TH12 suction)

1F: Emergency run (slave)

20: Outdoor storage (slave)

27: Ambient temp exceed the limit (slave)

28: 4WV malfunction (slave)

29: Refrigerant leakage (slave)

30: Digital comp overload (slave)

31: Fixed comp1 overload (slave)

32: Fixed comp2 overload (slave)

33: Fixed comp 3 overload (slave)

34: High pressure too high (slave)

35: Sensor broken, high pressure (slave)

36: Discharge temp too high (slave)

40: Super heat too low (slave)

41: Low pressure too low (slave)

42: Sensor broken, low pressure (slave)

A1: Indoor PCB error

A3: Drain pump fault

A5: Antifreeze (Cooling) / Heat exchanger overheat(Heating)

A6: Indoor fan motor fault

AH: Electrical air cleaner fault

C4: Indoor heat exchanger (1) thermistor short/open

C5: Indoor heat exchanger (2) thermistor short/open

C7: Louver limit switch error

C9: Indoor room thermistor short/open

E1: Outdoor PCB error

E3: High pressure protection

E4: Low pressure protection

E5: Compressor motor lock/compressor overloaded

E6: Compressor start-up error

E7: Outdoor DC fan motor lock

E8: Ac input over current

E9: EXV error

EA: 4 way valve error

F3: Discharge pipe overheat

F6: Heat exchanger overheat

HO: Compressor sensor system error

H3: High pressure switch error

H6: Compressor feedback detection error

H7: Fan motor overloaded/over current/sensor fault

H8: AC current sensor error

H9: Outdoor air thermistor short/open

J1: Pressure sensor error

J3: Compressor discharge pipe thermistor short/open/misplaced

J5: Suction pipe thermistor short/open

J6: Outdoor heat exchanger thermistor short/open

J7: Sub cooling heat exchanger thermistor short/open

J8: Liquid pipe thermistor short/open

J9: Gas pipe thermistor short/open

L1: Inverter outdoor PCB error

L3: Outdoor control box overheat

L4: Heat sink overheat

L5: IPM error/IGBT error

L8: Electrical thermal switch

L9: Stall prevention

LC: Communication error (outdoor PCB & inverter PCB)

P1: Open phase or voltage unbalance

P4: Heat sink thermistor short/open

PJ: Capacity setting error

U0: Insufficient gas

U2: DC voltage out of range

U4: Communication error

U7: Communication error (outdoor PCB & IPM PCB)

UA: Installation error

UF: Piping & wiring installation mismatch/wrong wiring/insufficient gas

UH: Anti freeze (other rooms)

Troubleshooting

If any malfunction of the air conditioner unit is noted, immediately switch off the power supply to the unit. Check the following fault conditions and causes for some simple troubleshooting tips.

Fault: The compressor does not operate 3 minutes after the air conditioner unit is started.

Causes / Action: -Protection against frequent starting. Wait for 3 to 4 minutes for the compressor to start operating.

Fault: The air conditioner unit does not operate.

Causes / Action:

– Power failure, or the fuse needs to be replaced.
– The power plug is disconnected.
– It is possible that your delay timer has been set incorrectly.
– If the fault persist after all these verifications, please contact the air conditioner unit installer.

Fault: The air flow is too low

Causes / Action:

– The air filter is dirty.
– The doors or windows are open.
– The air suction and discharge are clogged.
– The regulated temperature is not high enough

Fault: Discharge air flow has bad odour.

Causes / Action:

– Odours may be caused by cigarettes, smoke particles, perfume etc. which might have adhered onto the coil.

Fault: Condensation on the front air grille of the indoor unit.

Causes / Action:

– This is caused by air humidity after an extended long period of operation.
– The set temperature is too low, increase the temperature setting and operate the unit at high fan speed.

Fault: Water flowing out from the air conditioner unit.

Causes / Action: – Switch off unit and call dealer

Fault: Hissing air flow sound from the air conditioner unit during operation.

Causes / Action: – Refrigerant fluid flowing into the evaporator coil

If the fault persists, please call Ac Maintenance Dubai

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