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.

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.

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.

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