Table 7.3 Alarm Code Code No.
Category
01
Indoor Unit
Tripping of Protection Device
02
Outdoor Unit
Tripping of Protection Device
03
Transmission
Abnormality between Indoor and Outdoor (or Indoor)
04
Inverter
04 *
Transmission
05 06
Voltage Drop
Content of Abnormality
Inverter Trip of Outdoor Unit Abnormality of Fan Controller Abnormality of Power Source Wiring Voltage Drop in Outdoor Unit Excessively Low or High Voltage to Outdoor Unit Decrease in Discharge Gas Superheat
07 Cycle
Increase in Discharge Gas Temperature
08 09 11 12 13 14 19 21 22 23 24 29 31
Outdoor Unit
Sensor on Indoor Unit
Sensor on Outdoor Unit
Abnormal Transmission of Other Indoor Unit
32 35
Tripping of Protection Device Inlet Air Thermistor Outlet Air Thermistor Freeze Protection Thermistor Gas Piping Thermistor Tripping of Protection Device High Pressure Sensor Outdoor Air Thermistor Discharge Gas Thermistor Evaporating Thermistor Low Pressure Sensor Incorrect Setting of Outdoor and Indoor Unit
System
38 39 43 44 Pressure 45 47 51
Incorrect Setting in Indoor Unit No. Abnormality of Protective Circuit in Outdoor Unit Abnormality of Running Current at Constant Compressor Pressure Ratio Decrease Protection Activating Low Pressure Increase Protection Activating High Pressure Increase Protection Activating Low Pressure Decrease Protection Activating Abnormality of Current Sensor for Inverter Thermal Protection Activating Overcurrent Protection Activating
52 Inverter 53
IPM Protection Activating
54
Increase in Inverter Fin Temperature
56
Abnormality of Detection for Fan Motor Position
57
Outdoor Fan
58 dd**
Fan Controller Protection Activating Abnormality of Fan Controller
Transmission
Incorrect Wiring between Indoor Units
EE Compressor Compressor Protection * The indication flashes. ** In case of PC-P1H.
34
Leading Cause Failure of Fan Motor, Drain Discharge, PCB, Relay. Failure of Compressor, Refrigerant Quantity, Inverse Phase. Incorrect Wiring. Failure of PCB. Tripping of Fuse. Failure in Transmission of PCB for Inverter. Failure in Transmission between Fan Controller and Inverter. Reverse Phase Incorrect Wiring. Voltage Drop. Incorrect Wiring. Tripping of Fuse. Excessive Refrigerant Charge. Failure of Thermistor, Wiring. Insufficient Refrigerant. Failure of Thermistor, Wiring. Failure of Fan Motor, Incorrect Wiring. Failure of Thermistor, Sensor, Connection. Failure of Fan Motor, Incorrect Wiring.
Failure of Thermistor, Sensor, Connection.
Incorrect Setting of Capacity Code. Failure of Power Supply, PCB in Other Indoor Unit. Existence of the same Indoor Unit No. Incorrect Connection to PCB in Outdoor Unit. Incorrect Wiring. Failure of Compressor, Inverter, Power Supply. Overload to Indoor in Cooling. High Temperature or Outdoor Air. Overload Operation. Excessive Refrigerant. Vacuum Condition in Cycle Failure of Expansion Valve. Insufficient Refrigerant. Failure of Current Sensor. Overload, Overcurrent, Locking to Compressor. Overcurrent, Low Voltage, Overheating of Inverter Parts. Abnormal Inverter Fin Thermistor, Abnormal Outdoor Fan. Abnormal Detection Circuit of Transmission. Overcurrent, Abnormal Fan Controller Fin. Abnormal Fan Speed. Incorrect Wiring between Indoor Units and Remote Control Switch. Failure of Compressor.