Midea MOX133-09HFN8-QRD0GW

 Troubleshooting 
Check the fastening screws on the
PCB and IPM radiator.
Are they
fixed tightly?
Replace the outdoor
control PCB.
Tighten the screws and apply
silicon grease.
NO
YES
Note: For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric
control box should be replaced as a whole.