Forum Discussion

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. ...
Bobbo's avatar
Bobbo
Explorer II
Sep 23, 2014
Not to berate the obvious, but you DO have your house battery connected, right? If you use the battery disconnect switch, you lose the 12v to the thermostat as well as most everything else.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,211 PostsLatest Activity: Mar 08, 2025