Air Conditioners Error Codes

Water collection tray full alarm — unit emits 8 beeps and displays P1 when tray reaches maximum water level.

Indoor temperature sensor error — the indoor temperature sensor is not functioning properly.

Outdoor temperature sensor error — the outdoor temperature sensor is not functioning properly.

Communication error between indoor and outdoor units — the indoor and outdoor units cannot communicate properly.

Condenser temperature sensor error — the condenser coil temperature sensor has malfunctioned (on some models).

Display panel communication error — the control panel cannot communicate with the main circuit board.

Room temperature sensor error — the indoor temperature sensor has malfunctioned.

Evaporator temperature sensor error — the evaporator coil temperature sensor has malfunctioned.

Refrigerant leakage detection malfunction — the refrigerant leak detection sensor has malfunctioned (on some models).

Bottom tray is full — water collection tray has reached maximum capacity and unit has stopped cooling/dehumidifying.

Indicates a fault with the room temperature sensor.

Indicates a fault with the condenser temperature sensor.

Indicates a water drainage issue detected in cooling mode.

Indicates a fault with the evaporator temperature sensor.

Indicates a water drainage issue detected in heating mode (for models with heat feature).

Indicates a noise detection issue, signaling potential overheating or malfunction.

Indicates that the remote control is not functioning properly with the unit.

Error related to branch tubing temperature sensor or outdoor temperature sensor malfunction.

Indicates system detected fault (e.g., compressor overtemperature, faulty sensor, electrical component issue).

Overheating detected — internal temperature too high.

Drain error — water is not draining from the unit.

Indicates system was initialized and turned off but is now back on, possibly due to auto-fault detection.

Sensor failure — a sensor in the unit has failed and the system cannot operate properly.

Internal memory chip failure — the control board's memory has failed and the unit cannot operate properly.

Communication malfunction of main control board — the control board is not communicating properly with other components.

Indoor ambient temperature sensor is open/short circuited — the temperature sensor is not functioning properly.

Communication faults between main PCB and display PCB.

Ambient temperature sensor failure.

Coil temperature sensor failures.

Condensate water high level alarm.

Self-diagnosis function indicator — a problem has been detected in the air conditioner system.

Child Lock mode is active — the remote controller buttons are locked to prevent unauthorized operation.

Overheating detected — internal temperature too high.

Drain error — water is not draining from the unit.

Internal tank has become full — water needs to be drained from the unit.