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Old 03-19-2017, 05:55 PM   #1
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Suburban Furnace will not stay lit

I have a 2004 Sandpiper camper with a suburban furnace that will not light or once lit, will not stay on. When I turn the thermostat up and the fan comes on I go outside where the two vents are and place my hand over the vent that takes the air in and it will light but once the temp inside the camper come up and the furnace shuts down it cannot light again unless I put my hand over the vent again. Any suggestions?

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Old 03-22-2017, 04:39 PM   #2
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Posts: 282
I would suspect you have a defective sail switch. This switch must be open before the ignition sequence and closed afterwards. (Or the reverse, I forget) Putting your hand over the outlet changes the air flow which giggles the switch into working one more time.

They are relatively easy to replace (After you finally get the furnace out of the rig). Download the manual from the manufacturer.

- Jerry

My wife and I would travel full time, but we have to sleep occasionally.
2001 Tiffin Alegro Bus 40 ft DP named the Wild Eagle
Followed by the Eaglet - A 2005 Jeep Grand Cherokee.
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Old 03-22-2017, 04:53 PM   #3
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Sail Switch.
2017 Thor Freedom Elite 29fe
2015 Jeep Wrangler Toad
Making a smooth transition to senility for over 70 years
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ace, furnace

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