Century COMFORT-AIRE VMH-SG Series Service Manual page 107

Service Manual - VMHxxSG
Check the fastening screws on the
PCB and IPM radiator.
Are they Replace the outdoor
YES
fixed tightly? control PCB.
NO
Tighten the screws and apply
silicon grease.
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.
 Troubleshooting 
Troubleshooting