Furnace not igniting

[clintv]

I am having a furnace problem. I beleave it's a attwood. My problem is the furnace works fine when I run it on 110 shore power or my generator 4500 watts, but when I try to run it on 12 volts only the fan will kick on but then times out then nothing.

[jsb5717]

Hmmm...the furnace operates only on 12v whether or not you're plugged into a 120v supply. When plugged into shore power the converter is providing maximum output, ~13.6v to charge your batteries and run the coach. If the furnace isn't working when disconnected from shore power then I would look into how many volts your batteries are providing. They should be tested and possibly replaced.

[Clint and Roxann]

Thank Jeff I will put that on my todo list and check batteries.