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10-25-2017, 04:47 PM
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#1
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Junior Member
Join Date: Oct 2017
Location: Snohomish, WA
Posts: 13
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AC and Furnace not operational
I have a 2007 Four Winds Chateau. Recent purchase. The Atwood furnace and Duo Therm roof air are not working. No fan on either. I can measure 12v at the furnace. It has the analog Duo-Therm thermostat that controls both units. All fuses and CB's check ok. Logic tells me that since the thermostat appears to be the only thing common to both that it is most likely the cause of my problem. Any advice/help would be appreciated.
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10-25-2017, 05:56 PM
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#2
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Senior Member
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 19,925
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The thermostat sends a signal to the furnace and the A/C to operate. If you remove the cover from the thermostat, it should be simple to jumper the 12v in and the furnace or A/C signal wire. This should make the furnace kick on, if everything else is O.K.
Look up your thermostat make/model online and find the manual for it to be sure of the wiring.
__________________
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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10-25-2017, 06:00 PM
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#3
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2006
Location: MotherLoad foothills approx.60 m.s east of Sacramento
Posts: 1,281
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Unplug the wire behind the Tstat. looks like an old phone cable. Spray with elect cleaner and plug back in.. Find the reset procedure for your Tstat.Does the Tstat light up at all?
__________________
Full time since Nov 2012 RVM#41 Gary and Marian Hill 2001 Monaco Dynasty Jack 38' 370 hp ....If it ain't broke I can still fix it.
Like putting shoes on an octopuss, so are the days of our lives.... 
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10-25-2017, 11:10 PM
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#4
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Junior Member
Join Date: Oct 2017
Location: Snohomish, WA
Posts: 13
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There is no connector at the thermostat, it is connected on a terminal strip. There is no voltage at the thermostat so I need to trace that out. I don't think there are any lights on the thermostat.
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10-26-2017, 08:17 AM
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#5
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 54,745
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Hi !  Welcome to IRV2! We're sure glad you joined the gang! 
Congrats on the new rig! Keep her between the ditches!
Good luck, happy trails, and God bless!  
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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10-30-2017, 05:08 PM
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#6
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Junior Member
Join Date: Oct 2017
Location: Snohomish, WA
Posts: 13
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Thanks for the help, it turned out to be a wiring problem. The previous owner had the roof repaired and when the RV techs reinstalled the roof air they got some wires crossed. All is good now.
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10-30-2017, 06:29 PM
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#7
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Senior Member
Monaco Owners Club National RV Owners Club Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 4,920
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Quote:
Originally Posted by keg44
Thanks for the help, it turned out to be a wiring problem. The previous owner had the roof repaired and when the RV techs reinstalled the roof air they got some wires crossed. All is good now.
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Sounds typical.
__________________
2002 Monaco Windsor 40PST 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo, TireSafeGuard TPMS
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