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Old 12-29-2018, 09:12 AM   #1
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Atwood Furnace

I'm camping, the lows are 30f and my furnace is flakey.

About half the time it comes on, it never lights, and shuts off a minute later. Other half the times, fan runs 20 secs, then spark spark fwoom, heat. Of course once it doesn't start, then it won't try again until you shut the thermostat off then on again. Any field repairs??
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Old 12-29-2018, 09:20 AM   #2
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Historically it has been the sale switch or circuit board, both of which entails removal, something not done while traveling. Perhaps get an auxiliary electric heater?
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Old 12-29-2018, 09:48 AM   #3
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If you have a Atwood 8012 check out this thread. You may be able to blow out the dust from the sail switch. (post #9)
Eddie
How to replace sail switch ? (Atwood 8012)
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Old 12-29-2018, 10:13 AM   #4
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Our Atwood furnace started acting strange two weeks after we got our trailer and went downhill from there . Presently the furnace does absolutely nothing . ( Non Functional)
As Jim said it’s not a project to perform while on the road . We have a new sail switch and circuit board which we will install come Spring . From what we’ve read replacing the sail switch and circuit board are only a temporary fix .
We bought a portable electric heater as a stop gap measure . Eventually we will have to find a permanent , reliable source of vented propane heat for off grid camping .
Good Luck with your repairs
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Old 12-29-2018, 10:53 AM   #5
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The newer furnace sail switch is accessible from the outside exhaust cover. Might not even have to remove, may be able to blow the crud off the microswitch with a can of air.
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Old 12-29-2018, 11:07 AM   #6
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Quote:
Originally Posted by jeffrow View Post
The newer furnace sail switch is accessible from the outside exhaust cover. Might not even have to remove, may be able to blow the crud off the microswitch with a can of air.
The poster's trailer is the old style 2014 model, according to the avatar.
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Old 12-29-2018, 07:48 PM   #7
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Quote:
Originally Posted by John in Santa Cruz View Post
I'm camping, the lows are 30f and my furnace is flakey.

About half the time it comes on, it never lights, and shuts off a minute later. Other half the times, fan runs 20 secs, then spark spark fwoom, heat. Of course once it doesn't start, then it won't try again until you shut the thermostat off then on again. Any field repairs??
You describe 2 different start up problems here. The furnace control board is finding one or two problems before failing. If it was JUST the sail switch, it would fail before lighting.

On the 2014 model (8012) you can access the control board without removing the furnace, just the front grille. Check the fault code on the circuit board to find out why the furnace is shutting down. I can't recall if I had to remove any screws to look at the fault code LED. The install guide shows the codes on page 4. 1 flash is sail or limit switch, 2 flashes is gas not lighting, steady is a circuit board problem. My guess it is the circuit board since the failure is occurring at different points in the startup sequence.

Good Luck

http://techsupport.pdxrvwholesale.co...ion-Manual.pdf
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Old 12-30-2018, 01:33 PM   #8
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The furnace board should look pretty much like this (LED shows): Fan 50 Plus Pins page
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Old 12-30-2018, 06:59 PM   #9
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FYI, the furnace is a 8012-II

We got an electric fan heater at the local True Value, do we're good for this trip...

I'll pull it apart when I get home and check the mail switch, etc.
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Old 12-30-2018, 07:12 PM   #10
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If I ever have to pull my furnace for repair, I'll be putting in a copper or poly tube to be able to direct compressed air across the sail switch from the front of the furnace..........
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