DuctlessAire Air Conditioner Error Codes

 Ductlessair Mini Split AC Error Codes

DuctlessAire Air Conditioner Error Codes

Indoor Unit Error Display;

Operation lamp	Timer lamp	Display	LED STATUS
☆ 1 time	X	E0	Indoor unit EEPROM parameter error
☆ 2 times	X	E1	Indoor / outdoor units communication error
☆ 3 times	X	E2	Zero-crossing signal detection error
☆ 4 times	X	E3	Indoor fan speed has been out of control
☆ 5 times	X	E4	Indoor room temperature sensor T1 open circuit or short circuit
☆ 6 times	X	E5	Evaporator coil temperature sensor T2 open circuit or short circuit
☆ 7 times	X	EC	Refrigerant leakage detection
☆ 2 times	O	F1	Outdoor temperature sensor T4 open circuit or short circuit
☆ 3 times	O	F2	Condenser coil temperature sensor T3 open circuit or short circuit
☆ 4 times	O	F3	Compressor discharge temperature sensor T5 open circuit or short circuit
☆ 5 times	O	F4	Outdoor unit EEPROM parameter error
☆ 6 times	O	F5	Outdoor fan speed has been out of control（only for）
☆ 1 times	☆	P0	IPM malfunction or IGBT over-strong current protection
☆ 2 times	☆	P1	Over voltage or over low voltage protection
☆ 3 times	☆	P2	High temperature protection of compressor top diagnosis and solution(only for MS11D-21HRDN1-MN5Q1W model)
☆ 5 times	☆	P4	Inverter compressor drive error

 

Error Code: P4

Malfunction decision conditions: An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on.

Error Code: P2

Malfunction decision conditions: If the sampling voltage is not 5V, the LED will display the failure.

Error Code: P1

Malfunction decision conditions: An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit.

Error Code: P0

Malfunction decision conditions: When the voltage signal that IPM send to compressor drive chip is abnormal, the display LED will show “P0” and AC will turn off.

Error Code: EC

Malfunction decision conditions: Define the evaporator coil temp.T2 of the compressor just starts running as Tcool.

Error Code: E5

Malfunction decision conditions: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure.

Error Code: E3

Malfunction decision conditions: When indoor fan speed keeps too low (300RPM) for certain time, the unit will stop and the LED will display the failure.

Error Code: E2

Malfunction decision conditions: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal.

Error Code: E1

Malfunction decision conditions: Indoor unit does not receive the feedback from outdoor unit during 110 seconds and this condition happens four times continuously.

Error Code: E0/F4

Malfunction decision conditions: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip.

DuctlessAire Air Conditioner Unit Parts