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Old 11-26-2010, 03:42 PM   #1
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Question 390 XL rear furnace thermostat

I have 2001 390 XL DP. Purchased used in excellent condition, always garaged. Previous owners never used furnace, an Atwood. On a recent trip to Mammoth could not get rear furnace to work. I had never tried the furnace prior to this trip. I did some troubleshooting and found the rear analog thermostat is not connected to the contacts shown in the manual. I can't imagine it was wired wrong at the factory. Anyone else have a similar problem?

Thanks....
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Old 11-26-2010, 05:23 PM   #2
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Wink I figured it out

Sometimes you need to learn things the hard way. I traced the bathroom moumted thermostat wiring to the bathroom exhaust fan. The duo therm 4 button thermostat actually controls both the front and rear furnace. You need to simultaneously press the fan and mode buttons to access something called stage. When in stage mode you can toggle to furnace and it lights the bedroom furnace. The duo therm settings for the rear furnace are a bit unclear however. The settings range from 0 to 10deg. F. I'm guessing it is an offset to the front furnace.

Well, I'm an extremely happy owner of an Airstream 390 XL DP and happy to be a part of this informational forum.
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Old 11-26-2010, 06:28 PM   #3
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Greetings

Welcome to the club.
Hope you get many years enjoyment from the Airstream.
Dave
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Old 11-26-2010, 06:32 PM   #4
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Pictures

Quote:
Originally Posted by JosefZ View Post
I have 2001 390 XL DP. Purchased used in excellent condition, always garaged. Previous owners never used furnace, an Atwood. On a recent trip to Mammoth could not get rear furnace to work. I had never tried the furnace prior to this trip. I did some troubleshooting and found the rear analog thermostat is not connected to the contacts shown in the manual. I can't imagine it was wired wrong at the factory. Anyone else have a similar problem?
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Originally Posted by JosefZ View Post

Thanks....


Josef:
Post some pictures of your unit. We all like pictures.
Dave
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Old 11-26-2010, 11:15 PM   #5
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Thumbs up Will post pics shortly..

Thanks for the welcome, will post some pics shortly.
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Old 11-27-2010, 10:11 AM   #6
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Atwood Furnace

Quote:
Originally Posted by JosefZ View Post
I have 2001 390 XL DP. Purchased used in excellent condition, always garaged. Previous owners never used furnace, an Atwood. On a recent trip to Mammoth could not get rear furnace to work. I had never tried the furnace prior to this trip. I did some troubleshooting and found the rear analog thermostat is not connected to the contacts shown in the manual. I can't imagine it was wired wrong at the factory. Anyone else have a similar problem?
Quote:
Originally Posted by JosefZ View Post

Thanks....



Atwood has a good site on line, with manuals for all the furnaces.

http://www.atwoodmobile.com/heating-systems.asp

Dave
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