furnace won't turn on

[Pat in Michigan]

Just wondering if any of you have had trouble with your furnace not turning on in your Parkliner. I had it on a couple of weeks ago but tried to turn it on today but nothing. Didn't even try. I am hoping it is something easy..

[floyd]

Originally Posted by Pat in Michigan

Just wondering if any of you have had trouble with your furnace not turning on in your Parkliner. I had it on a couple of weeks ago but tried to turn it on today but nothing. Didn't even try. I am hoping it is something easy..

Thermostat turned on and operable with live 12V power?
Does the fan start and then quit after a short time?
Intake and exhaust clear of insect nests?
Propane tank has fuel and valve is open?
Sticky sail switch? Whack the side of the furnace while it is on.
Lastly... is the temperature inside the trailer higher than the thermostat setting?

[Raz]

Furnace won't come on or won't ignite? For safety reasons my furnace, an Atwood 7900, goes through a start up sequence. The fan runs then the ignitor clicks. If it fails to ignite it shuts down. I suspect they all are similar. If yours doesn't do this then your themostat may be defective. When my furnace malfunctioned I bypassed the thermostat with a wire. The furnace would run but not ignite. My problem turned out to be a cold solder joint on the control board. Tough to find but easy to fix. Good luck, Raz

[MAP 56]

It might be voltage problem .it the furnace dropes below a certan voltage point.it wont turn on // bad ground /bad thermostat .mine was a loose wire on the trermostat.hope this helps.

[Emb]

That happened to me too. Just bled the propane line of air, and the furnace started working.

[Jann Todd]

Originally Posted by Pat in Michigan

Just wondering if any of you have had trouble with your furnace not turning on in your Parkliner. I had it on a couple of weeks ago but tried to turn it on today but nothing. Didn't even try. I am hoping it is something easy..

Possibly a blown fuse.

[Gerry]

If no reaction at all must be no Power getting to the Furnace. First try something easy. Jump the thermostate wires to each other and see if it reacts. No? trace wire down to furnace and jump the TT terminals. any reaction? No? Then wire or fuse to furnace is not in working order.
If you would have said it is not working while on Battery power, and the fan turns on but would not ignite, I would say the Battery is low, even if the fan turns it takes more power to run the gas valve and igniter and maybe bleed gas as said.

[Kenny Strong]

I agree with Gerry My Atwood fan would run, no ignition. I had used 12volt to keep refer cool while traveling; I guess it was too much of a drain on the battery. When starting my 4runner, the fan came on, and the igniter lit the fuel. Some times the fan comes on, no ignition, I move the thermostat higher and lower,where one can hear the change in switch(name ? ) turn on and off ) Fan is still on and igniter comes on, heater then will run ok. I bought a new thermostat on Amazon comes in white or brown.
Later Kenny

[Pat in Michigan]

Thanks all, it turned out to be the fuse. I appreciate all the helpful hints and feel a little silly I didn't check that first.

[MAP 56]

Wow what a teem .

[cmartin748]

If you have no idea what you are doing, have it looked at by a pro. Always be on the safe side.

[steve dunham]

If the battery is low , the furnace blower may start but it will not turn the squirrel cage blower fast enough to trigger the sail switch so the furnace will not go into ignition mode.