Install Manual

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10.10 Error Code: PC 02 (High temperature protection of IPM module or High pressure protection
diagnosis and solution)
Description: If the temperature of the IPM module is higher than a certain value, the LED displays the
failure code.
For some models with a high pressure switch, the outdoor pressure switch will cut off the system because the
pressure is higher than 4.4 MPa. If this occurs, the LED will display the failure code.
Recommended parts to prepare:
•
Connection wires
• Outdoor PCB
•
•
IPM module board
•
High pressure protector
System blockages
Troubleshooting and repair:
Check the fastening screws on the
PCB and IPM radiator.
Are they
firmly secured?
Replace the outdoor
control PCB.
Tighten the screws and apply
silicon grease.
NO
YES
Note: For certain models, the outdoor PCB cannot be removed separately. In this case, the outdoor
electric control box should be replaced as a whole.
****Disclaimer****
The error codes and descriptions are for reference only. If your system displays any of
these codes contact a qualified technician to investigate the matter further.