Carrier 42QHP09E8S - Page 77

Troubleshooting
 Page 73 
5.11 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:
• Faulty PCB
• Connection problems
Troubleshooting and repair:
Check the fastening screws on the
PCB and IPM radiator.
Are they
fixed tightly?
Replace the outdoor
control PCB.
Tighten the screws and apply
silicon grease.
NO
YES