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Trouble shooting rear furnace

Swope7896
Explorer
Explorer

โ€ŽJan-18-2021 08:31 AM

I not getting any heat out of my rear furnace. It's blowing cold air. I check and propane is making it there.
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3 REPLIES 3

Old-Biscuit
Explorer II
Explorer II

โ€ŽJan-18-2021 06:23 PM

Fan runs but Sail Switch MUST close before anything else can occur.

DC has to go thru sail switch/limit switch and back to circuit board before circuit board can send DC to as valve/spark electrode

Sail switch......
Is it time for your medication or mine?


2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31
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BarneyS
Explorer III
Explorer III

โ€ŽJan-18-2021 10:16 AM

Moved to Tech Issues forum from DIY.
2004 Sunnybrook Titan 30FKS TT
Hensley "Arrow" 1400# hitch (Sold)
Not towing now.
Former tow vehicles were 2016 Ram 2500 CTD, 2002 Ford F250, 7.3 PSD, 1997 Ram 2500 5.9 gas engine
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enblethen
Nomad
Nomad

โ€ŽJan-18-2021 09:00 AM

Do you hear it sparking? If yes, check continuity on the two gas valve coils?
Check output of the circuit board for 12 volts.
Check for 12 volts DC to circuit board.
Are you operating on battery or shore power. Low battery could indicate sail switch not closing so no power to circuit board.

Bud
USAF Retired
Pace Arrow


2003 Chev Ice Road Tracker
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