Question about Dometic Rooftop RV Air Conditioner
I HAVE A DUO-THERM AC MOD 59016.521 WHEN I TURN THE UNIT ON I HERE ONE OF THE RELAYS CLICKING ON THE PC BOARD BUT NO OPERATION .WHEN I JUMP ACROSS THE RELAY BOTH FAN AND COMPRESSOR TRY TO RUN AND THE UNIT TRIPS THE COACHES 25 AMP CIRCUIT BREAKER. THE PC BOARD IS FOUND INSIDE THE UNIT NOT MOUNTED ON THE SIDE ONTOP......THANK FOR THE ASSIT.FRANK
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Posted on Jan 02, 2017
Something wrong with your thermostat, but if you are using a electronic thermostat and have the indication of supply like light in your control then you can replace the miniature relay that triggers the cool mode of the unit. But no indication of supply try to check the fuse, then if not works you to replace new thermostat.
Posted on Jan 03, 2008
SOURCE: duo-therm by dometic ac rv unit
I suspect that you have a bad selector switch for the on, off, low fan, high fan operation. If the selector switch is put into the off position everything should stop completely.
Posted on May 31, 2008
I don't think these little units have a start capacitor but what I would do is check that the on/off switch wires to make sure they aren't loose. Also check the wires to the compressor for loose wires as well. It is possible that these are the first signs that the compressor is about to fail. They also can act up some when they haven't been used for awhile and then you try and start them up. Try running the unit for a few hours without asking it to cycle. It might just be a sticky valve.
Posted on Apr 13, 2009
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