speaking of furnaces......

[sundawg]

any one know where to start with a furnace that wont light??? i am hooked up to 110 v...propane is on....switch under thermostat is on...switch on furnace face is on.....i turn it up to 90F and get nothing...its a Hydro flame model...I dont have a battery hooked up and i have the wiring unhooked on the ceiling lights ,because of the ceiling repair.....any help would be great.....

[mike4947]

you can download a service manual from here: http://bryantrv.com/docs.html
It'll answer your questions

[Tim5055]

My first thought is that you are not getting 12v to the furnace.    The first thing that should happen is the blower should start for a short period of time before it tries to light.

No blower, no power I think.

[coach]

Sequence of Operation of Atwood Heater
Hydro flame Troubleshooting

I'd start with a volt meter.

[sundawg]

and i had 12 volts at back of inverter...went to the thermostat....and put my volt meter across the contact and a small copper wire and pooff the furnace started up...ran for a bit then hot air started to blow....turned it off and on a couple times and it worked fine.....got to love it...thanks all for the suggestions...now back to work on the roof!