BGH BSBSIC24CTK Manual page 44

8. P0 malfunction
Top temperature protection of compressor
Judge 1: Whether compressor operates?
Judge 2: Whether refrigerant circulation volume is
normal?
Method: Charge refrigerant
Whether abnormality is the same after gas charging?
Check refrigerant system (such as clogging of capillary etc.)
40
P0 display
Yes
No
No
No
Whether
the
connection is good?
Yes
Whether protector is
normal?
Yes
Check the outdoor
main PCB. Is there
some problem?
Troubleshooting
No
Reconnect and
retest.
No
Replace the protector.
Yes
Replace the protector.