41
Fault Handling
Fault handling process:
12. System overcurrent protection
Fault phenomenon: Overload protection trips
Fault handling process:
Replace the compressor.
Check if the compressor is worn. Check
if the power and operating sound of the
compressor is normal.
Error
OK
OK
OK
OK
OK
OK
OK
The air exhaust temperature is too high
Check if the temperature sensor is faulty;
check wirings and main board terminals.
Replace the temperature
sensor or the main board.
Check if the refrigerant volume is correct.
Check if the radiator is blocked or inefficient.
Discharge the excessive
refrigerant, or clean the
radiator.
Check if the electronic expansion value is
not opened to the required extent. Check if
the suction gas superheat is too high.
Replace the electronic
expansion value or refresh
the control program.
Error
Error
Error
Error
Error
Error
Error
Error
System overcurrent protection
Check if the thermal overload protector is
faulty. Check the wirings and main board
contacts.
Check if the refrigerant volume is correct.
Check if the radiator is blocked or inefficient.
Check if the EEV is not opened to the
required extent. Check if the suction gas
superheat is too high.
Check if the compressor is worn. Check if the
power and operating sound of the compressor
is normal.
Check if the power supply connection of
the compressor is loose.
Replace the thermal overload
protector or the main board.
Discharge the excessive
refrigerant, or clean the
radiator.
Replace the EEV or refresh
the control logic.
Replace the compressor.
Reconnect properly.
