Carrier 40MPHA Service Manual page 30

DIAGNOSIS AND SOLUTION (CONT)
P2 (High temperature protection of IPM module diagnosis and solution)
Description: If the temperature of IPM module is higher than limited value, the LED displays this failure code.
Recommended parts to prepare:
S
Faulty PCB
S
Connection problems
Troubleshooting and Repair:
Check the fastening screws on the
PCB and IPM radiator.
Are they
fixed tightly?
NO
Tighten the screws and apply
silicon grease.
Replace the outdoor
YES
control PCB.
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