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 - EEPROM Parameter Error
E1 - Indoor unit and outdoor unit communication protection error 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
Check all the wirings between indoor and outdoor, indoor main PCB and outdoor main PCB following the wiring diagram. Are all the wirings connected correctly?
- Yes
E3 - Indoor 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/E6 - Open or short circuit of temperature sensor diagnosis and solution
-
Check the connections between temperature sensor and main PCB. Are the connections good?
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
Check if the IPM installed correctly.
- No
Correct the installation, tighten the screws and apply silicon grease.
- Yes
IPM continuity check. Check if the IPM terminal resistance values are uniform.
- No
- 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
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
Check if the IPM installed correctly.
- No
Correct the installation, tighten the screws and apply silicon grease.
- Yes
IPM continuity check. Check if the IPM terminal resistance values are uniform.
- No
- Yes