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Old 04-20-2013, 01:30 PM   #1
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furnace trouble help

Been given a 1998 Fladstaff 176SD ten trailer.
Failet basic unit - ice box, pump sink (with no fresh water tank), converter (which is currently not working, no 110v) and a furnace (which also doesn't work). Other than that it looks to be in decent shape.

Trying to decide if I should fix the furnace or buy a portable heater instead.

Furnace is a suburban DD17. Fan seems to work fine, took it out and bench tested the sail switch, works graet. re-installed the unit and nothing but fan. Propane to the unit and the battery is fully charged and new.

Thoughts? Suggestions?

Only plan on using a few times a year, but having heat is essential as I will be camping in the foothills/rockies where it gets cool at night.


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Old 04-20-2013, 02:18 PM   #2
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Here is a service manual.


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Old 04-20-2013, 03:55 PM   #3
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Our old PUP had a switch on the flip up sink that would cut power to the trailer is the switch is open. This could be your power problem. If you have a pump faucet then you should also have a fresh water tank.
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Old 04-21-2013, 10:05 AM   #4
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This one has the switch on the flip up sink, that works fine. And so do the lights.
As for the fresh water tank, the previous owners (my mother-in-law) removed it for more storage and lost it in a move.

Is there an easy way to test the propane regulator? After reading the manual (thank you Turbs) I think I need to check that next.
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Old 04-23-2013, 11:54 AM   #5
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Another easy thing to check is the ground on the trailer. I had a furnace that bench tested fine, but would not work in the trailer. Turned out to be some corrosion around the ground strap was preventing the fan from turning fast enough to trip the sail switch.
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Old 05-25-2013, 10:35 AM   #6
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** Update **

Got the furnace to work. Had to re-adjust the sail switch, found a ground wire cut going nowhere and a previous owner must have cut and replaced the battery wires at some point. they were reversed.

Going to try it for the first time the first weekend of June.

Thanks for everyones help.

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