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Dometic Duo Therm, 15000 BTU: Thermostat works, fan runs, but no cool air. Any ideas?

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Our domrtic air and furance will not come on at all. No clicks when we try the theranstat Dometic told us to unplug the thermonstat but do not know where it is located. we have an anolog thermonstat . Also any other thing that might help me to troubleshoot, we live many miles from dealer.

Posted on Aug 05, 2010

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Check the compressor and the condenser fan to see if they are running;they will have to be checked from the roof. If one is running and not the other then check the capacitor for the one that's not. If both are off then check the contactor that controls them. You will also want to make sure they are getting power. If they have power and the capacitors are good, check the motor windings for the fan and compressor. Hope this helps. Let me know what you find.

Posted on Aug 05, 2010

  • Brian Niten Aug 06, 2010

    To eagles8, do you have power to the unit? Check the circuit breaker or fuses.

  • Brian Niten Aug 06, 2010

    eagles8, also look in the control panel inside for a small fuse.

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