Question about Dometic Rooftop RV Air Conditioner
Coleman rooftop a/c unit is fried? i plugged my camper trailer into a 240volt generator plug, and now the frig, ac, and radio won't work.. help!
If there Air Conditioner is wall thermostat controlled, then take the front cover off the thermostat and check the fuse. If the fuse is ok, then take the inside cover of the AC down and pull down the control box that is mounted in the intake section of the AC. It is held on with two wing nuts. Remove the cover and observe the relays and the incoming AC wiring. Make sure that none of this is burnt. If all looks ok, turn power on and turn the thermostat to High Cool and check if you can hear the relay click inside the control unit. If not, then check to see if the thermostat has 12V going to it. Start there and see how that goes.
If it is controlled by the ceiling mount t-stat and selector switch. Remove the inner shroud and check the incoming AC wires for OK. If they look ok then check the selector switch and the thermostat.
The Refer has protection from this. Depending on which refer you have (Dometic or Norcold), the process is a tad different. If it is a dometic, go to the outside of the coach and remove the access panel on the rear of the refer. Remove the black cover from the control board (lower left side) and check to make sure that the 120V fuse is good (You will need an ohmmeter to check). If it is fine the check to see if you have power going into the 12V block at the very bottom, rear of the refer. If there is 12V there, then check the plug that the Refer is plugged into for 120V. If none, check the GFCI circuit in either the bathroom of the kitchen. If tripped you will have no power to fridge. Start there and then we will move forward.
Basic same checks for a norcold, board is harder to remove as you have remove wires. Mark and remember where they go.
Hope this helps,
Posted on Jun 30, 2009
I think you sre screwed. Sorry.
Posted on Jun 29, 2009
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Posted on Jan 02, 2017
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