RV Repair: Dometic ac. unit, ac unit, unit thanks

Question
The duotherm rooftop ac.unit was running normally then just stopped after I power washed the outside of it. The unit then resumed operation and ran fine for two days. I had someone look it over as it was not running at all,no fan, no compressor. When they came to look I wasnt there, the unit had resumed working again and worked fine two days later for approx. three hours then same problem ,no fan no compressor. There is 120 volts going to the roof. Does this sound like a control circut board problem? I noticed a circut board in the metal box inside the roof unit. Thanks Dave Spada

Answer
Hi David:

You stated that the A/C unit had been working fine with no problems until you pressure washed it. While you were pressure washing it, did any of the spray get up inside of the the air conditioner fan motor or other components?

David, if you will send me the model number of the A/C unit, I will try to tell you which wires to test on the circuit board.

Regards, Larry