First turn the power on to the unit and taking a pencil manually activate the contactor switch by pushing the contactor swith in. (this is the switch that the power feeds to the unit from the supply) if the unit activates and runs then you problem would be your low voltage control(transformer) if not then the problem will be in the circuit board. Good Luck on repairs
Dave
If you're going to a RV trip right to a campsite you can choose between two types of camping chairs, the basic camping chair and the comfortable camping chair.
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Is this add on or factory A/C? What brand is it?
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