mrcool.com Page 54
Are the high pressure switch
and main control board wired
correctly?
YES
YES
NO
NO
NO
Replace the outdoor main board.
Is the problem resolved?
High pressure protection
Is the outdoor fan running
properly?
NO
Connect the high pressure switch
and main control board.
Check whether the refrigerant
system is functioning properly.
NO
10.10 Error Code: PC 02 (Cont.)
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?
Replace high pressure protector.
NO
Stop the unit.
Is the outdoor ambient
temperature higher than
122°F (50°C)?
Check if the outdoor unit
ventilation is good.
Ensure that the outdoor unit
ventilation is functioning properly.
Please refer to the solution of the
“Fan Speed is Operating Outside
of Normal Range” malfunction.
YES
Is the heat exchanger dirty?
Clean the heat exchanger.
Is the high pressure
protector broken?
****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.
To Next Page
Loading...
Need help?
General
