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Old 05-27-2013, 07:48 PM   #1
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Location: Bass Lake. Ca
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Our 2005, 34 Foot Alpine Coach's Suburban Furnace has died. Just prior to it's death the furnace cycled on and off about every minute and then completely stopped. All functions at the thermostat, with the exception of FURNACE, work. The fuse at the main electrical panel is ok. I am unable to find the furnace assembly!!!! I have looked in the storage bay and nothing but the ducting manifold and the area under the refrigerator and all there is only the burner manifold. Where is the furnace assembly located so I can do some trouble shooting??? --Tom

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Old 05-27-2013, 08:20 PM   #2
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Go outside, find the vent for it. Then go inside to the same place, there it is.

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Old 05-27-2013, 11:15 PM   #3
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Just a quick guess- under the fridge

BTW furnaces are a collection of parts, including some safety switches. One of them could be kaput. Yours is probably a Suburban SF-42F, which fortunately came w/a 2 year warranty.
There is a normally closed limit switch in the tstat line to the control board that, if it fails open, would preclude a call from the tstat to reach the control. Likewise the module board could be bad. Or could just be a finicky female connection wants some attention and can't figure any other way to get it than withhold her services.
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Old 05-28-2013, 07:55 AM   #4
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If it was cycling on and off i.e. the fan was turning on and off the chances are it is the motor. As Mike pointed out it is under the fridge, that panel just pulls straight out.
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