- 01 – Indoor Unit Protection Device Tripping (Flow Switch)
- 02 – Outdoor Unit Protection Device Trip (High Pressure Cutoff)
- 03 – Abnormality Between Indoor and Outdoor Units
- 04 – Abnormality Between Inverter PCB And Outdoor Unit PCB
- 04. – Abnormality Between Fan Control And Outdoor Unit PCB
- 05 – Abnormal Power Supply Phases
- 06 – Abnormal Inverter Voltage
- 06. – Abnormal Fan Control Voltage
- 07 – Decrease at Output Gas Temperature
- 08 – Output Gas Temperature Increase
- 0A – Abnormalities Between Outdoor Unitsk
- 0b – Incorrect Outdoor Unit Address Setting
- 0C – Incorrect Master Outdoor Unit Setting
- 11 – Air Inlet Thermistor
- 12 – Air Outlet Thermistor
- 13 – Frost Protection Thermistor
- 14 – Gas Piping Thermistor
- 19 – Indoor Unit Fan Protection Device Trip
- 21 – High Pressure Sensor
- 22 – Outdoor Thermistor
- 23 – Compressor Outlet Gas Thermistor
- 24 – Heat Exchanger Liquid Pipe Thermistor
- 25 – Heat Exchanger Gas Pipe Thermistor
- 29 – Low Pressure Sensor
- 31 – Incorrect Capacity Setting of Outdoor Unit or Indoor Unit
- 35 – Incorrect Setting of Indoor Unit Number
- 36 – Indoor Unit Combination Error
- 38 – Abnormality in the Receiving Circuit for Protection in the Outdoor Unit
- 39 – Abnormal Current Circulating in Constant Speed Compressor
- 3A – Abnormalities in Outdoor Unit Capacity
- 3b – Incorrect Adjustment of Outdoor Unit Model, Combination or Voltage
- 3d – Abnormality of Communication Between Master and Slave Unitsi
- 43 – Trip of Low Compression Ratio Protection Device
- 44 – Tripping of Low Pressure Surge Protection Device
- 45 – Opening the High Pressure Surge Protection Device
- 47 – Trip of Low Pressure Fall Protection Device (Vacuum Operation Protection)
- 51 – Abnormal Inverter Current Sensor
- 53 – Inverter Fault Signal Detector
- 54 – Inverter Blade Temperature Abnormality
- 55 – Inverter Failure
- 57 – Fan Control Protection Trip
- 5A – Fan Control Blade Temperature Abnormality
- 5b – Overcurrent Protection Tripping
- 5C – Abnormality in Fan Control Sensor
- EE – Compressor Protection Alarm
- b1 – Outdoor Unit No. Setting Incorrect Unit Setting and Cooling Cycle No.
- b5 – Indoor Unit No. Setting Incorrect Indoor Unit Connection Number Setting