Furnace fan on

[Drkevr]

I just went out to move my RV and found the furnace fan on. I can’t seem to find a switch or breaker to shut it off, only auto position which is making no difference. I am connected to shore power but as I had a battery draining before wondering if this might be related.

Any of your expert opinions to solve this dilemma is appreciated.

[Hooligan2]

Often a result of the control board getting wet. Sometimes removing the board and drying (hair Dryer) works. Check the furnace cover for leaks.