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8.2.9 High temperature protection of IPM or compress top diagnosis and solution (P2)
Error Code
P2
Malfunction decision
conditions
If the sampling voltage is not 5V, the LED will display the failure.
Supposed causes
●
Power supply problems.
●
System leakage or block
●
PCB faulty
●
Connection problems
Trouble shooting:
Check if the CompTop port on the PCB
connects with a sensor
Check if the CompTop port on the PCB
connects with a sensor
Yes
Correct the connection.
Correct the connection.
Check refrigerant system
Check refrigerant system
Please refer to the solution of
【
High
temperature protection of
compressor top
】
malfunction
Please refer to the solution of
【
High
temperature protection of
compressor top
】
malfunction
No
Check if the radiator and
refrigerant copper pipe connect
well
Check if the radiator and
refrigerant copper pipe connect
well
Yes
No
