Haier Ductless Split Air Conditioners
27 fault codes documented
Condensate water forming at the air outlet
Water droplets are observed at the air outlet of the indoor unit. This can occur when the horizontal louvers are adjusted to extreme left or right positions, particularly during high humidity conditions.
Condensate water not draining correctly
The condensate drain line is not effectively removing water, which can lead to pooling, bad odors, or the unit failing to operate. Common issues include improper slope, blockages, or the drain line end being submerged.
Condensate water forming on vertical louver
Water droplets are appearing on the vertical louvers of the indoor unit. This typically happens in COOL or DRY modes if the louver is kept in a downward position for too long.
E1 - Room temperature sensor failure
The indoor unit displays E1, meaning the sensor that measures the room temperature is not working correctly.
E14 - Indoor fan motor malfunction
The indoor unit displays E14, indicating a problem with the fan motor inside the indoor unit, which is responsible for circulating air.
E2 - Heat-exchange sensor failure
The indoor unit displays E2, indicating a problem with the heat-exchange sensor, which monitors the temperature of the coils.
E4 - Indoor EEPROM error
The indoor unit displays E4, indicating an error with the indoor unit's EEPROM, which stores essential operating data.
Error E7 — Indoor and Outdoor Unit Communication Error
The indoor unit display shows 'E7', indicating a problem with the communication between the indoor and outdoor units. This means the units cannot exchange necessary information for proper operation.
F1 (2 LED flashes) - IPM protection triggered
The outdoor unit's LED1 flashes twice, indicating that the Intelligent Power Module (IPM) is under protection due to an issue.
F11 (18 LED flashes) - Compressor operating outside normal parameters
The outdoor unit's LED1 flashes eighteen times, indicating the compressor is operating outside its normal parameters.
F12 (1 LED flash) - Outdoor EEPROM error
The outdoor unit's LED1 flashes once, indicating an error with the outdoor unit's EEPROM, which stores essential operating data for the outdoor unit.
F19 (6 LED flashes) - Power supply voltage too high or low
The outdoor unit's LED1 flashes six times, indicating that the power supply voltage is outside the acceptable range (either too high or too low).
F2 (24 LED flashes) - Overcurrent of the compressor
The outdoor unit's LED1 flashes twenty-four times, indicating an overcurrent condition affecting the compressor.
F21 (10 LED flashes) - Frost-removing temperature sensor failure
The outdoor unit's LED1 flashes ten times, indicating a failure with the sensor responsible for detecting frost during defrost cycles.
F22 (3 LED flashes) - Outdoor AC overcurrent protection
The outdoor unit's LED1 flashes three times, indicating that the AC electricity supply to the outdoor unit has triggered an overcurrent protection.
F23 (25 LED flashes) - Overcurrent protection for single-phase of the compressor
The outdoor unit's LED1 flashes twenty-five times, signaling an overcurrent protection activation specifically for the single-phase operation of the compressor.
F25 (13 LED flashes) - Exhaust temperature sensor failure
The outdoor unit's LED1 flashes thirteen times, indicating a failure with the exhaust temperature sensor in the outdoor unit.
F27 (7 LED flashes) - Compressor locked rotor or momentary stop
The outdoor unit's LED1 flashes seven times, indicating that the compressor has either locked up or temporarily stopped functioning.
F28 (19 LED flashes) - Loop of the station detect error
The outdoor unit's LED1 flashes nineteen times, indicating an error in the 'loop of the station detect' system, which likely relates to refrigerant flow or pressure.
F3 (4 LED flashes) - Communication fault between IPM and outdoor PCB
The outdoor unit's LED1 flashes four times, signaling a communication problem between the Intelligent Power Module (IPM) and the main Outdoor Printed Circuit Board (PCB).
F36 (39 LED flashes) - Middle part of condenser temperature sensor failure
The outdoor unit's LED1 flashes thirty-nine times, indicating a failure with the temperature sensor located in the middle part of the condenser.
F4 (8 LED flashes) - Overheat protection for exhaust temperature
The outdoor unit's LED1 flashes eight times, indicating that the exhaust temperature has exceeded safe limits, triggering an overheat protection.
F6 (12 LED flashes) - Ambient temperature sensor failure
The outdoor unit's LED1 flashes twelve times, indicating a failure with the outdoor ambient temperature sensor.
F7 (11 LED flashes) - Suction temperature sensor failure
The outdoor unit's LED1 flashes eleven times, indicating a failure with the suction temperature sensor in the outdoor unit.
F8 (9 LED flashes) - Outdoor DC fan motor fault
The outdoor unit's LED1 flashes nine times, indicating a problem with the outdoor unit's DC fan motor, which helps dissipate heat.
Unit display lamp not lighting normally
The indicator lamp on the indoor unit's display is not lighting up as expected, or it is showing an unusual pattern. This could signal a power issue or an operational fault within the unit.
Air conditioner making unusual noise
The air conditioner unit is producing abnormal sounds during operation, such as rattling, humming, or squealing. This indicates a potential issue that requires investigation.