Question about Dometic Rooftop RV Air Conditioner

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Neither fan or compressor will com on

Checked fuse on circuit board it was blown, replaced it and the breaker tripped and blew the new fuse on the circuit board. Trailer was not moved worked fine the week before. Also tried the furnace and it will not work either.

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  • sweating17 Jun 24, 2008

    Thank you for your help with my air conditioner I very much appreciate it. I am going to buy a new unit.

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You have a short circuit in the system at some point. A blown fuse on the circuit board indicates a short in the control circuit. Tripping of the breaker indicated a high voltage draw from the compressor. Check the compressor motor terminals with the wires removed and the power off. Use an Ohm meter from a terminal to ground. You should have no reading. If you have any reading the compressor motor is shorted out and the compressor is done.

Posted on Jun 20, 2008

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