Midea MSH-07CRN1, MSH-07HRN1, MSH-09CRN1, MSH-09HRN1, MSH-12CRN1, MSH-12HRN1 Manual page 276

Operation lamp flashes and Timer lamp off.
Change the main control board
5.4 Operation lamp off ,Timer lamp off and Defrosting lamp flashes.
Is connection to connector good?
5.5 Operation lamp off, Timer lamp flashes and Defrosting lamp off
Is connection to connector good?
5.6 Operation lamp on, Timer lamp flashes and Defrosting lamp off
EEPROM error, main PCB has fault.
Temporarily turn off the power supply and turn it on again in about 1 minutes
Does the trouble occur again?
Replace the indoor PCB
Yes
yes
Replace the sensor
yes
Replace the sensor
Yes
Repair connector
Repair connector
4
No
No