PLEASE SELECT THE ERROR CODE BELOW
Instructions
Tap the error code below to begin the troubleshooting process.
If you are not able to resolve your issue or if you find an error in this troubleshooting process, please click here to contact us.
E0/F4 - EEPROM parameter error diagnosis and solution
E1 - Indoor / outdoor unit’s communication diagnosis and solution
Power off, then turn on the unit 5 seconds later(reconnect the power wire).Is the error still displaying after several minutes?
- Yes
Measure Vs, is it moving alternately with positive value? (Vs is the voltage between L2 and S of outdoor unit. Connect the red pin of multimeter with L2 port, black pin with S port)
- Yes
E2 - Zero crossing detection error diagnosis and solution
E3 - Fan speed has been out of control diagnosis and solution
Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code?
- No
The unit operates normally.
- Yes
Shut off the power supply, rotate the fan by hand. Does it rotate properly?
- No
Find out the cause and have it solved. For example, check whether the fan is blocked or the bearing is broken?
- Yes
Check the wires of fan motor. Are all the connections good?
- No
- No
E5 - Open circuit or short circuit of temperature sensor diagnosis and solution
Check the connections between temperature sensor and main PCB. Are the connections good?
EC - Refrigerant Leakage Detection diagnosis and solution
-
Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code?
P0 - IPM malfunction or IGBT over-strong current protection diagnosis and solution
-
Check if the wiring between main PCB and compressor connected by error and if the wires and connectors are broken?
- Yes
Correct the connection or replace the wires and connectors.
- No
IPM continuity check. Check if the IPM terminal resistance values are uniform. Refer to page 64.
- Yes
P1 - Over voltage or too low voltage protection diagnosis and solution
-
Check if the power supply is normal.
- No
Disconnect the unit with power supply and try to restart the unit when power supply gets normal.
- Yes
Check if all the connections and wires are good?
- No
Correct the connections or replace the wires.
- Yes
Power on and when the unit is in standby, check if the voltage between P and N is around DC 310V or 340V or 380V? For different kinds of units, the voltage differs. Consult with technical engineer to get definite value. Then start up the unit, measure the voltage between P and N. Is it in 220V~400V?
- No
- No
P2 - High temperature protection of compressor top diagnosis and solution
-
Check if the air flow system of indoor and outdoor units are obstructed?
- Yes
Clear up the air inlet and outlet or the heat exchanger of indoor and outdoor units.
- No
Turn off the power supply and turn it on 10 minutes later.
- Yes
P4 - Inverter compressor drive error diagnosis and solution
-
Check if the wiring between main PCB and compressor connected by error and if the wires and connectors are broken?
- Yes
Correct the connection or replace the wires and connectors.
- No
IPM continuity check. Check if the IPM terminal resistance values are uniform. Refer to page 64.
- Yes