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mileshuff's avatar
mileshuff
Explorer
Sep 21, 2014

Dometic AC, Thermostat no power, where is 12v fuse?

Air conditioning stopped working on my last trip. LCD thermostat display is blank. It's not getting 12VDC. Thermostat has 3 wires going to control box thats mounted just above the filter grill. ...
dougrainer's avatar
dougrainer
Nomad
Sep 21, 2014
There IS a 12 volt fuse in the 12 volt fuse section of your RV for the roof AC. The Roof AC does NOT convert the 120 volts to 12 volts. The 12 volt power is one of the small gauge wires at the roof AC control box and the 3 wires going to the wall tstat supply the power to the wall tstat. Doug

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