MrCool DIY E Star Series Installation & Owner's Manual page 55

10.10 Error Code: PC 02 (Cont.)
Are the high pressure switch
and main control board wired
Testing method: Disconnect the
plug. Measure the resistance of
the high pressure protector. If the
protector is normal the value is
0. Does a problem still exist?
Check if the outdoor unit
Is the outdoor fan running
Is the heat exchanger dirty?
Replace the outdoor main board.
Check whether the refrigerant
system is functioning properly.
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.
High pressure protection
correctly?
YES
Is the high pressure
protector broken?
.
,
?
YES
Is the outdoor ambient
temperature higher than
122°F (50°C)?
NO
ventilation is good.
YES
properly?
YES
NO
.
Is the problem resolved?
NO
****Disclaimer****
Connect the high pressure switch
NO
and main control board.
Replace high pressure protector.
NO
YES Stop the unit.
Ensure that the outdoor unit
NO
ventilation is functioning properly.
Please refer to the solution of the
NO
"Fan Speed is Operating Outside
of Normal Range" malfunction.
YES Clean the heat exchanger.
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