Other faults codes

Airwell Air Conditioning Fault Codes

Airwell YBZE218-324-430 Air Conditioning Fault Codes

Fault code LEDs blinking RUNLEDs blinking COOLLEDs blinking HEATFault descriptionPossible Reason
E11HP switch protection1. Refrigerant was superabundant
2. Poor heat exchange (including blockage and bad radiating environment)
3. Too high ambient temperature
E22Indoor coil defrost Protection1. Poor air-return in indoor unit
2. Fan speed is abnormal
3. Evaporator is dirty
E44Compressor over Heating Protection1. EEV connection problem or damage
2. Refrigerant leakage
3. Poor heat exchange
E55AC Over current protection1. Supply voltage is unstable
2. Supply voltage is too low and load is too high
E66Communication malfunction1. Wiring mistakes
2. IDU or ODU PCB problem
E77Mode conflictMode conflict to other IDU
E88Indoor coil/Outdoor coil over heating protection1. Too high ambient temperature
2. Poor heat exchange (including blockage and bad radiating environment)
H611No feedback of indoor motor1.FAN motor damaged
2. I FAN motor blocked
3. IDU PCB problem
C515Malfunction protection of jumper capPoor connection of the jumper on indoor PCB.
U817Zero-crossing protection (IDU)1.FAN motor damaged
2. Zero-crossing circuit damaged on IDU PCB
LP19Mismatch of IDU and ODU
F11RAT failure1. Senor was broken or damaged
2. PCB temperature detection circuit has problem
F22ICT failure1. Senor was broken or damaged
2. PCB temperature detection circuit has problem
F33OAT failure1. Senor was broken or damaged
2. PCB temperature detection circuit has problem
F55CTT failure1. Senor was broken or damaged
2. PCB temperature detection circuit has problem
PH11DC over voltage1. AC input voltage is too high.
2. Reactor has problem
3. ODU PCB has problem
F418OCT failure1. Senor was broken or damaged
2. PCB temperature detection circuit has problem
b519RLT failure1. Senor was broken or damaged
2. PCB temperature detection circuit has problem
b722RGT failure1. Senor was broken or damaged
2. PCB temperature detection circuit has problem

Airwell Wall Split XLS Series Air Conditioning Fault Codes

Fault code Fault descriptionPossible Reason
H3Compressor overload protection1. EEV connection problem or damaged
2. Refrigerant leakage
3. OLP damaged
H5IPM protection1. Abnormal power input voltage.
2. Compressor wiring mistake.
3. Liquid and gas valve are not open.
4. EEV damaged or not proper working
5. Poor heat exchange.
6. Over charged system.
HCPFC protection1. PFC module assembly problem.
2. Poor heat exchange of Heatsink
3. PFC reactor problem.
4. Abnormal power voltage
5. PFC circuit problem on PCB
H7Desynchronizing of compressor1. Abnormal power input voltage.
2. Compressor wiring mistake.
3. Liquid and gas valve are not open.
4. EEV damaged or not proper working
5. Poor heat exchange.
6. Over charged system.
LcCompressor start-up failure1. Compressor wiring mistake
2. Over charged system
3. System not balanced before compressor starting
4. Compressor problem
U1Compressor phase current detection problemPhase current detection circuit for compressor has problem
P5DC over current1. Abnormal power input voltage.
2. Compressor wiring mistake.
3. Liquid and gas valve are not open.
4. EEV damaged or not proper working
5. Poor heat exchange.
6. Over charged system.
PUCharging malfunction of capacitor1. Reactor open
2. Charging relay or other components damaged on PCB.

Akai Air Conditioner Fault Codes

Akai AK-9000-RC Air Conditioner Fault Codes

Digital self-check codeIndicator light self-check codeSelf-check information
Indicates “dF”or heating icon blinksBlinks once per secondDefrost indication
Fan motor picture not runningBlinks once per secondAnti cold wind
E2Blinks once every 8 secondsRoom temperature sensor fault
E3Blinks twice every 8 secondsCoil temperature sensor
E8Blinks 3 times every 8 secondsIndoor fan fault
E5Blinks 6 times every 8 secondsOutdoor feedback
E7Blinks 7 times every 8 secondsExternal feedback fault
EOBlinks 3 times every 8 secondsOpen the door fault
E1Blinks 4 times every 8 secondsOutdoor tube temperature sensor faults
E6Blinks 6 times every 8 seconds(EEPROM) Communication failures
FFBlinks once per secondOutdoor temperature exceeds scope (too cold)

Akai AC-ZP112 Air Conditioner Fault Codes

Error codeCause Solution
Error code "E1" in LED windowEnvironment temperature sensor is broken.Replace the temperature sensor
Error code ”E2" in LED windowTemperature sensor on the evaporator is brokenReplace the sensor
Error code "E3" in LED windowCooling system malfunction caused by the lack of refrigerantContact the local repairing technician directly
Error code ”E4" in LED window the red FULL light is brightWater tray is full in the heating mode, but the unit is still workingEmpty water in water plate

Aux air conditioner fault codes

If your air conditioner does not work well, take a look at the following table from the manual. Troubleshooting tips can help you save time and avoid unnecessary costs.

Display modeFault source
E1Plastic temp sensor is abnormal.
PG motor feedback is abnormal
E2Copper temp sensor is abnormal (outdoor)
E3Copper temp sensor is abnormal (indoor)
E4PG motor feedback is abnormal
E6Over-current oprotection
Timing light twinkles 4 times in every 8 secondsPG motor feedback is abnormal
Timing light twinkles 1 times in every 8 secondsPlastic temp sensor is abnormal
PG motor feedback is abnormal
Timing light twinkles 2 times in every 8 secondsCopper temp sensor is abnormal (indoor)
Plastic temp sensor is abnormal
Timing light twinkles 1 times in every 1 secondsCopper temp sensor is abnormal (indoor)
Copper temp sensor is abnormal (outdoor)
Timing light twinkles 3 times in every 8 secondsCopper temp sensor is abnormal
Timing light twinkles 6 times in every 8 secondsOver-current oprotection
Timing light twinkles 8 times in every 8 secondsCopper temp sensor is abnormal

Americool Portable Air conditioner fault codes

Timely service and repair of air conditioners helps to eliminate many faults before the device finally breaks down. But if the failure has already occurred, look for the cause of the malfunction in the table below. In the table you will also find tips for eliminating the breakdown.

Model HPC-3000 / HPC-5000 / WPC-7000 / WPC-9000 / WPC-15000 Americool Portable Air Conditioners Alarm Codes

Alarm DisplayProblemCauseCorrective Action
1CFrost preven on sensor and Abnormal temperature sensor value• Indoor heat exchanger temperature too low

• TH3 temperature sensor has a loose or broken connec on
• Do not use the air conditioner if ambient temperature is lower than 18°C (64°F)
• Contact a qualified service agent
P5Refrigerant high pressure switch• Blocked air fi lter
• Blocked /kinked exhaust duct
• Ambient temperature is too high
Clean air filter
• Ensure exhaust duct is not blocked / kinked
• Do not use the air conditioner if ambient temperature is higher than 45°C (113°F)
51Abnormal temperature sensor valueTH1(Outlet) temperature sensor has a loose or broken connectionContact a qualified service agent
52TH2(Inlet) temperature sensor has a loose or broken connection
C0Compressor overloaded • Ambient temperature is too high
• Unstable voltage supply
• Defective compressor
• Do not use the air conditioner if ambient temperature is higher than 45°C (113°F)
• Contact a qualified service agent
• Replace compressor
FtCondensate water level alarmCondensate tank is full• Empty the water tank
• A er installa on of the water tank, press the SPOT/COOL or ROOM/COOL bu on to resume operation
FUDrain pump alarmDrain pump defective or improper hose connection (including kink or blockage)• Check the hose connection and hose
• Replace drain pump