Atwood furnace - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 6 (permalink) Old 03-26-2013, 02:02 AM Thread Starter
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Atwood furnace

Anyone ever work on their furnace on the camper? I'm having trouble with the burner firing up. There is a ckt. board assembly mounted on the blower motor outside the camper that has 4 wires plugged into it with another running through somehow. If I push on the assembly at all, the blower will fire up and run to the interior temperature setting. After it runs the duration it won't fire again till I go out and push on it again. Not very handy! Thanks
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post #2 of 6 (permalink) Old 03-26-2013, 02:16 AM
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Originally Posted by indiana lineman View Post
Anyone ever work on their furnace on the camper? I'm having trouble with the burner firing up. There is a ckt. board assembly mounted on the blower motor outside the camper that has 4 wires plugged into it with another running through somehow. If I push on the assembly at all, the blower will fire up and run to the interior temperature setting. After it runs the duration it won't fire again till I go out and push on it again. Not very handy! Thanks
Is it a spark or hot tube ignition? Sounds like the connections are corroded. Does the solenoid click on it may also have a corroded connection. I would "wiggle" all the connection points doesn't sound like the board is bad unless one of the components or solder connections is weak.

I had a similar problem on the gas side of my fridge and had to swap out the flame sensor/spark generator off another used board.

Early 2004 F-250 4x4 CC 6.0


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post #3 of 6 (permalink) Old 03-26-2013, 03:27 AM Thread Starter
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I took the assembly out and hooked it all up outside the enclosure. Walked back in the camper, turned the stat back up, wiggled the connections and like I suspected it was firing back up. It almost looks like the terminals connect there to some kind of switch assembly that's built inside of the block itself. I hope that makes sense. It has a 12v on the top and a couple series of numbers. BTW nothing looks corroded.


It also sounds like a spark is igniting it inside there.

Last edited by indiana lineman; 03-26-2013 at 03:28 AM. Reason: more info.
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post #4 of 6 (permalink) Old 03-28-2013, 01:42 AM Thread Starter
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Update: I did a search online and found a place that sold camper furnace parts. The guy found what I described and I will see if this takes care of it. Anticipating some self satisfaction on fixing this thing without consulting a pro.
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post #5 of 6 (permalink) Old 03-28-2013, 01:50 AM
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The controls probably work on 12v and the blower is the only part that is 120v. Sounds like the switch or control you explained is bad. Thanks for the update if all else fails head east on 80/90 to the rv Mecca of the world in Goshen/Elkhart I'm sure there is a guru there.

A schematic or wire diagram is probably on their website. I downloaded the info for my norcold fridge.

Good luck!

Early 2004 F-250 4x4 CC 6.0


2nd owner, ARP studs 1 at a time, Some parts missing in the exhaust path, BD intercooler hoses, Blue spring, MC filters, Sinister coolant filter, Exhaust manifold gaskets, WARN lockouts, Gold coolant, zoodad mod, autometer boost gauge, high idle mod, Scangauge 2, SCT X3 tuned from KEM, autometer fuel pressure gauge, Archoil 6200 in the fuel, FICM by Ed w/ATLAS40, autometer pyro gauge,'08 Alum Rear Diff cover, 5w-40 Rotella T6 w/ Archoil 9100 in it, zert in the slip joint, harpooned fuel tank, 6.4 banjos


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post #6 of 6 (permalink) Old 03-28-2013, 02:07 AM Thread Starter
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Just a little show and tell with the link. I did a live chat with the guy, very helpful. Correct it does appear that I have a bad relay. http://www.americanrvcompany.com/zoo...es/31017mc.jpg
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