Troubleshooting
- 15 -
Display Title Cause of Error
Outdoor unit related error
2 1 1
Outdoor unit Inverter Compressor IPM
Fault
Outdoor unit Inverter Compressor Drive IPM Fault
2 2 1
Inverter Board Input Over Current(RMS) of
Outdoor Unit
Outdoor unit Inverter Board Input Current excess (RMS)
2 3 1
Outdoor unit Inverter Compressor DC link
Low Voltage
DC charging is not performed at Outdoor unit after starting
relay turn on.
2 4 1
Outdoor unit High Pressure Switch
System is turned off by Outdoor unit high pressure switch.
2 5 1
Outdoor unit Input Voltage High/ Low
Voltage
Outdoor unit input voltage is over 487V or below 270V
2 6 1
Outdoor unit Inverter Compressor Start
Failure
The First Start Failure by Outdoor unit Inverter
Compressor Abnormality
2 8 1 Outdoor unit Inverter DC link High Voltage
System is turned off by Outdoor unit DC Voltage Over
Charging
2 9 1
Outdoor unit Inverter Compressor Over
Current
Outdoor unit Inverter Compressor Fault OR Drive Fault
3 0 1
Outdoor unit Constant Speed Compressor2
High Discharge Temperature
System is turned off by Outdoor Uunit Constant Speed
Compressor2 High Discharge Temperature
3 2 1
Outdoor unit Inverter Compressor High
Discharge Temperature
System is turned off by Outdoor unit Inverter Compressor
High Discharge Temperature
3 3 1
Outdoor unit Constant Speed Compressor1
High Discharge Temperature
System is turned off by Outdoor Uunit Constant Speed
Compressor1 High Discharge Temperature
3 4 1
High Pressure of Outdoor Unit
System is turned off by excessive increase of high pressure
of Outdoor unit
3 5 1
Low Pressure of Outdoor unit
System is turned off by excessive decrease of low pressure
of Outdoor unit
3 6 1
Outdoor unit Low Condensing Ratio Limited Outdoor unit stayed under low condensing limit for 3 minutes
4 0 1
Outdoor unit Inverter Compressor CT
Sensor Fault
Outdoor unit Inverter Compressor CT Sensor open or short
4 1 1
Outdoor unit Inverter Compressor
Discharge Temperature Sensor Fault
Outdoor unit Inverter Compressor Discharge Temperature
Sensor open or short
4 2 1
Outdoor unit Low Pressure Sensor Fault Outdoor unit Low Pressure Sensor open or short
4 3 1
Outdoor unit High Pressure Sensor Fault Outdoor unit High Pressure Sensor open or short
4 4 1
Outdoor unit Air Temperature Sensor Fault Outdoor unit Air Temperature Sensor open or short
4 5 1
Outdoor unit Heat Exchanger Temperature
Sensor (Front side) Fault
Outdoor unit Heat Exchanger Temperature Sensor(Front
side) open or short
4 6 1
Outdoor unit Suction Temperature Sensor
Fault
Outdoor unit Suction Temperature Sensor open or short
[Error Code (Outdoor Unit)]
• This page is about outdoor error code. It can vary depending on outdoor unit. For more information, please
refer to the outdoor unit manual.
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