MrCool DIY E Star Series Installation & Owner's Manual page 54

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:
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.
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.
Page 53
Check the fastening screws on the
PCB and IPM radiator.
Are they
firmly secured?
NO
Tighten the screws and apply
silicon grease.
****Disclaimer****
Replace the outdoor
YES
control PCB.
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