HAIR Trouble Codes HAIR09C 0 No Trouble 1 Outdoor Coil Temperature Sensor in Trouble 2 Compressor Temperature Sensor in Trouble 3 Voltage transformer in trouble 4 Current Transformer in trouble 5 IPM Module Protection 6 Over and Under-voltage Control 7 Communication trouble 8 Current Overload Control 9 Maximum Current Control 10 4-way Valve Changeover abnormal 11 Outdoor EEPROM in Trouble 12 13 Compressor exhaust temperature too high control 14 Outdoor ambient temperature sensor in trouble 15 Compressor housing temperature control 16 Anti-freeze or overload control 17 18 DC Compressor fails to start 19 DC Compressor out of step 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Room Temperature sensor in trouble 34 Indoor coil temperature sensor in trouble 35 36 Communication between the indoor and outdoor in trouble 37 38 39 Indoor fan motor operation abnormal 40 Grid protection alarm (cabinet type) 41 Detecting failures byy zero-crossing 42 43 44 45 46 47 48 49