Midea MSH-07CRN1, MSH-07HRN1, MSH-09CRN1, MSH-09HRN1, MSH-12CRN1, MSH-12HRN1 Manual page 303

11.1.8
Display
P1
Is the power supply right?
Yes
Check the outdoor power board
Replace the outdoor power board
11.1.9
Display
P2
Off: 120c; On: 105c
Does compressor operate?
Is refrigerant circulation volume normal?
Gas charging
Is abnormality the same after gas charging
Check refrigerant system (such as clogging of capillary, etc)
Over load or too low voltage protection
Compressor top protection against temperature
Yes
No
No
LED STATUS
LED STATUS
No
Is protector normal?
Yes
Check the outdoor main PCB.
302
No
Replace protector