32
TROUBLESHOOTING
Code
No.
Category Content of Abnormality Leading Cause
11 Inlet Air Thermistor
12 Outlet Air Thermistor
13 Freeze Protection Thermistor
14 Gas Piping Thermistor
Failure of Thermistor, Sensor, Connection.
19
Sensor on
Indoor Unit
Tripping of Protection Device for Fan Motor Failure of Fan Motor
20 Compressor Thermistor
22 Outdoor Air Thermistor
24 Evaporating Thermistor
Failure of Thermistor, Sensor, Connection
31 Incorrect Setting of Outdoor and Indoor Unit Incorrect Setting of Capacity Code.
35 Incorrect Setting in Indoor Unit No. Duplication of Indoor Unit number
38
Sensor on
Outdoor Unit
Abnormality of Protective Circuit in Outdoor Unit
Failure of Indoor Unit PCB. Incorrect wiring. Connection to PCB
in Indoor Unit.
41
Overload Cooling
(Possibility of high pressure device activation)
O.U. Pipe Thermistor Temp. is Higher than 55ºC
and the Comp. Top Temp. is Higher than 95ºC
when O.U. Protection Device is activated.
42
Overload Heating
(Possibility of high pressure device activation)
I.U. Freeze Protection Thermistor Temp. is Higher than 55ºC
and the Comp. Top Temp. is Higher than 95ºC when O.U.
Protection Device is activated.
47
Activation of Low Pressure Decrease Protection
Device
Stoppage by Excessively Decrease of evaporating Temperature
(Te < -35ºC) is activated 3 times in one hour, Locked Motor in
Heating Operation.
48
Pressure
Protection activation for overload operation
Excessive Refrigerant. Pipe clogging.
Compressor Failure
51 Abnormality of Current Sensor for Inverter Failure of Control PCB
53 Protection Activation of Transistor Module
Inverter PCB abnormality.
Failure of Compressor, clogging of Heat Exchanger.
54 Inverter Fin Temperature Increase
Abnormal Inverter Fin Thermistor.
Clogging of Heat Exchanger
Abnormal Outdoor Fan
55
Inverter
Inverter Abnormality Inverter PCB
57 Outdoor Fan Fan Motor Abnormality
Disconnected wire of Incorrect wiring between Control PCB and
Inverter PCB.
Incorrect Wiring or Fan Motor Abnormality
59 Inverter
Thermistor of Inverter Fin Abnormality (for
Inverter Fin Temperature)
Loose connector, Disconnnected wire short circuit
b1
Indoor unit No.
setting
Incorrect unit No. Setting Over 64 indoor units setting by No. or indoor unit address.
EE Compressor Compressor Protection Alarm Failure of Compressor.
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