43
Troubleshooting
Error Codes Error Description Action
H0
Compressor sensor system
abnormality
1. Check the reactor connection.
2. Check the compressor connection.
3. Measure the resistance value between the reactor terminals.
4. Measure the resistance value between the compressor terminals.
H3 High pressure switch error
1. Check pressure sensor connection.
2. Check HPS continuity.
H6 Position sensor abnormality
1. Check for short circuit.
2. Check the electrolytic capacitor voltage.
3. Check compressor harness wire.
4. Check with inverter checker.
H8 AC current sensor error
1. Restart the system.
2. Check capacitor voltage.
3. Measure the rectifi er input voltage.
4. Check compressor harness wire.
5. Check with inverter checker.
H9 Outdoor air thermistor short / open
1. Check the sensor connection.
2. Check the sensor resistance value.
J1 Pressure sensor error
1. Check pressure sensor connection.
2. Check pressure and voltage level.
J3
Compressor discharge pipe thermistor
short / open / misplaced
1. Check the sensor connection.
2. Check the sensor resistance value.
3. Check indoor coil sensor resistance value.
J5 Suction pipe thermistor short / open Same as H9.
J6 Outdoor heat exchanger Same as H9.
J7
Subcooling heat exchanger thermistor
short / open
Same as H9.
J8 Liquid pipe thermistor short / open Same as H9.
J9 Gas pipe thermistor abnormality Same as H9.
LC
Communication Error
(control PCB and inverter PCB)
1. Check fan motor connection.
2. Check if LED blinking normally at outdoor PCB.
L1 Outdoor PCB error
1. Check the range of power supply.
2. Check connection between compressor and PCB.
3. Check fan motor resistance.
4. Check the power supply waveform.
L3 Electrical box temperature rise
1. Restart the system.
2. Check sensor resistance value.
3. Check heat sink temperature and conditions.
4. Check outdoor fan.
5. Check the installation condition.
L4 Heat sink overheat
1. Restart the system.
2. Check the silicon grease condition on heat sink.
3. Check sensor resistance value.
4. Check heat sink temperature and conditions.
5. Check outdoor fan.
6. Check the installation condition.
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