Error Code Troubleshooting
Error Code Troubleshooting
No Display
Cause
1. PCB is damaged.
2. The power supply is damaged.
3. The transformer is damaged.
4. Please confirm whether there is power.
2. The power supply is damaged.
3. The transformer is damaged.
4. Please confirm whether there is power.
Solution
1. Replace the PCB.
2. Replace the power supply.
3. Replace the transformer.
2. Replace the power supply.
3. Replace the transformer.
E01 - Main Power Abnormal
Cause
1. Main power is connected to the reverse phase.
2. Missing phase on the main power.
3. Main power is out of working range ±10%.
4. The main power supply has experienced an abnormal trip.
2. Missing phase on the main power.
3. Main power is out of working range ±10%.
4. The main power supply has experienced an abnormal trip.
Solution
1. Invert any two phases from the cable.
2. Make sure the main power is normal and check cable is securely connected to the terminal.
3. Check the main power input.
4. Replace the fuse.
2. Make sure the main power is normal and check cable is securely connected to the terminal.
3. Check the main power input.
4. Replace the fuse.
E02 - Pump Motor Overload
Cause
1. Pump motor overloads and triggers thermal relay.
2. Unable to reset the thermal relay (QFP).
3. Pump motor is damaged.
4. Replace the motor.
2. Unable to reset the thermal relay (QFP).
3. Pump motor is damaged.
4. Replace the motor.
Solution
1. Reset the thermal relay (QFP).
2. Compare current with QFP setting. Refer to test report.
3. Replace the thermal relay (QFP).
4. Replace the motor.
2. Compare current with QFP setting. Refer to test report.
3. Replace the thermal relay (QFP).
4. Replace the motor.
E03 - Compressor Overload
Cause
1. Compressor overloads and triggers thermal relay [QFC].
2. Unable to reset the thermal relay (QFC).
3. Compressor is damaged.
4. Refrigerant leakage.
2. Unable to reset the thermal relay (QFC).
3. Compressor is damaged.
4. Refrigerant leakage.
Solution
1. Reset the thermal relay (QFC).
2. Compare current with QFC setting. Refer to test report.
3. Replace the thermal relay (QFC).
4. Replace the compressor.
2. Compare current with QFC setting. Refer to test report.
3. Replace the thermal relay (QFC).
4. Replace the compressor.
E04 - Cooling Abnormal
Cause
1. Operating temperature exceeds range.
2. The air filter is dirty.
3. The fan motor is malfunctioning.
4. The condenser is clogged.
5. The refrigerant pressure switch is damaged.
2. The air filter is dirty.
3. The fan motor is malfunctioning.
4. The condenser is clogged.
5. The refrigerant pressure switch is damaged.
Solution
1. Wait for temperature to cool.
2. Clean the air filter.
3. Clean the condenser.
4. Replace refrigerant pressure switch.
5. Replace the motor.
6. Use an industrial fan to temporarily cool.
2. Clean the air filter.
3. Clean the condenser.
4. Replace refrigerant pressure switch.
5. Replace the motor.
6. Use an industrial fan to temporarily cool.
E05 - Oil Circuit Abnormal
Cause
1. The input piping is loose.
2. Input/output piping reversed.
3. Liquid level in tank is low.
4. Pump or motor shaft damaged.
5. Pressure adjustment malfunction.
6. Oil pressure switch damaged.
7. Hose or filter clogged.
8. Impurities in adjustment valve.
9. Pressure too high.
10. Air in piping.
11. Water level switch damaged.
2. Input/output piping reversed.
3. Liquid level in tank is low.
4. Pump or motor shaft damaged.
5. Pressure adjustment malfunction.
6. Oil pressure switch damaged.
7. Hose or filter clogged.
8. Impurities in adjustment valve.
9. Pressure too high.
10. Air in piping.
11. Water level switch damaged.
Solution
1. Tighten the piping.
2. Reconnect properly.
3. Add oil.
4. Replace pump/motor.
5. Replace pressure switch.
6. Clean valve.
7. Clear hose or replace filter.
8. Lower pressure / check for blockage.
9. Repeat on/off cycle.
10. Replace water level switch.
2. Reconnect properly.
3. Add oil.
4. Replace pump/motor.
5. Replace pressure switch.
6. Clean valve.
7. Clear hose or replace filter.
8. Lower pressure / check for blockage.
9. Repeat on/off cycle.
10. Replace water level switch.
E07 - Low Refrigerant
Cause
1. Low refrigerant level.
2. Refrigerant pressure switch damaged.
2. Refrigerant pressure switch damaged.
Solution
1. Check refrigerant and refill.
2. Replace the switch.
2. Replace the switch.
E08 - Oil Circuit Flow Error
Cause
1. Oil circuit clogged or piping loose.
2. Flow switch (FL) damaged.
3. Air in piping.
4. Piping rupture.
2. Flow switch (FL) damaged.
3. Air in piping.
4. Piping rupture.
Solution
1. Clean or tighten oil circuit.
2. Replace the switch.
3. Repeat on/off cycle.
4. Replace piping.
2. Replace the switch.
3. Repeat on/off cycle.
4. Replace piping.
E09 - Oil Temperature Sensor
Cause
Oil temperature sensor is damaged.
Solution
Replace the sensor.
E10 - Room Temperature Sensor
Cause
Room temperature sensor is damaged.
Solution
Replace the sensor.
E11 / E12 / Ser / ---
Note
Please consult service engineer to review missing information or update this section once data is available.
