Question about Dometic Rooftop RV Air Conditioner

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13500 unit will not come on year 2000

Neither compressor or fan will come on. Breaker not tripped but fuse on circuit board blown. Replaced fuse and it tripped the breaker and blew the new fuse when power was restored.Tried the furnace and it will not work either. Everything worked the week before. Trailer was not moved but there was a thunderstorm during the week when we were not there.Can an RV dealer check the circuit board or do I have to replace it as a process of elimination? I do not know if this is the problem please help.

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  • Anonymous Sep 08, 2008

    Have a 2001Winnebago, last camped in May, unit went back into storage, go up once a month to run generator. A month ago when running generator, ac would not go on, could not hear fan also. Have checked fuses and circuit breaker, nothing..Just bought this RV a year ago and not real familiar with how it operates or where to find units to check out. Back in Feb while camping we did have wire overheat and melt in the Transfer Box. Replaced wires and everything worked fine. Now am not sure what to do.

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Assuming you have central air (controlled by a wall thermostat), chances are the control unit in the A/C was hit by the thunderstorm. These are fairly common to be ruined by power fluctuations and bad weather as is the control unit in the refrigerator. The controls unit "runs" both the cooling and heating. If you ever notice right before your furnace turns on, there is a clicking noise in the A/C. Thats the control unit. It tells what "system" to turn on They are not cheap. They are about $150-200. The best thing you can do is unplug your unit when not in use. I have replaced TONS of control boards, etc. because people leave their unit plugged in and they have been hit by bad weather. Good luck and happy camping.

Posted on Jun 18, 2008

  • carlspakler Jun 18, 2008

    Another question is that are you talking about the circuit board on the A/C unit or the one on the power converter (Little brown box close to the floor that usually sounds like a fan is running).

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