Losing 110 volt with dommic furnace

[Mlenest]

I just got my rv back after the yearly check
And we found a new problem that is strange
1. It seems that blower don’t work
2. After about 11/2 hours the 110 volt shut off but 12 volt still works
3. To restore 110 power shut power off at peditsal or some time need to turn off battery disconnect and turn it back on

I know it the furnace because I have turn it off and we have not lost power for 12 hours

[AZ Traveler]

Mathew,

The furnace does not use 110 volt, it uses 12 volt for its brains and the blower. They are designed to support boondocking with no 110 power.

[rohrmann]

There should be no reason for turning the battery disconnect off and on to restore power, AC or DC. The battery disconnect switch, regardless of the label on the switch, is on, meaning the battery is connected to the main panel in the trailer, when you can not remove the red key from the switch. I’m betting when they did whatever they did during the inspection they left something disconnected or turned off which is affecting the furnace.