Thor Forums

[bigben]

We have 2015 Thor Challenger with an Atwood furnace AFMD 35141. We spend very little time where temps drop into the 30s. Most times we use the electric fireplace and a small electric heater. Always keeps the cabin temp in the upper 60s to lower 70s without a problem. But on the occasion that we get caught in freezing temps, a functioning furnace is a must to keep the basement (water lines and tanks) from freezing up.

Looked all over the forums and found lots of info. Preparing to pull the furnace, I started taking pics of the wiring to make reinstalling easier. Of course the LED light was giving me the 3 and 3 blinks - telling me I had an Ignition Lockout Fault. So I was tracing the wiring and pull the red wire in the diagram below to shut off the power. What do I find but a RESET/OFF switch!! Nothing mentioned about anywhere else. Well after I pulled the wiring and reset the LED light, then reattaching the red wire, I turned the switch to off and turned the thermostat to a high temp. Nothing. Turned the switch to RESET - BINGO, BANGO, BONGO. Furnace started right up.

Wow - what a simple deal. I had followed all the instruction about turning the gas off, turning the furnace on, letting the blower run and trying to light...etc. Nothing.

Hit the hard RESET switch - fixed.

Just some info for the rest of you.

Note: I apologize that I don't have a better pic of the switch but I'd put it all back together before I remembered to post this. But the attached annotated pic should suffice.