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11-14-2021, 06:21 PM
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#1
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Junior Member
Join Date: Sep 2021
Location: Tucson, Az
Posts: 18
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Dual-Thermo by Dometic
Hi,
Went to turn heat on, but "Heat" not showing up. Fan snd Cool show up and work.
I reset breakers for both top units. I reset Thermostat. Still no "Heat" shows up. It worked great last year..
Thank you, All!
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11-14-2021, 06:32 PM
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#2
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Senior Member
Join Date: Nov 2015
Posts: 26,843
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Model of Thermostat?
Year/Brand/Model of RV?
Some Details would be helpful........
If it is an Analog Duo-Therm T-stat
Then could be slide switch contacts for 'Heat'
Could be DC Fuse to Furnace is Blown
Could be Furnace On/Off Switch--Circuit Breaker ON Furnace Frame is off/tripped
Brand/Model of Furnace?
If not analog....has been changed to Digital that info is needed
Post Picture of Thermostat if you can
__________________
I took my Medication today. HAVE YOU?
Dodge 3500 w/Tractor Motor
US NAVY---USS Decatur DDG-31
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11-14-2021, 06:50 PM
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#3
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Junior Member
Join Date: Sep 2021
Location: Tucson, Az
Posts: 18
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Comfort Control Center
Part no. 3106463.007
__________________
BS
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11-14-2021, 06:56 PM
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#4
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,603
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All communication is via the phone cable type connectors. They should be accessible from inside (at least mine are). Take them apart and reseat them, there may be a bad connection.
I have 2 AC/s. In my case the thermostat communicates with the Bedroom AC and then there is another cable that goes to the front AC where there is another connector. There are a total of 3 phone connectors that tie all 3 together and to the thermostat.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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11-14-2021, 06:59 PM
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#5
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Junior Member
Join Date: Sep 2021
Location: Tucson, Az
Posts: 18
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Pic
He is a picture of my unit.
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11-14-2021, 07:03 PM
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#6
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Junior Member
Join Date: Sep 2021
Location: Tucson, Az
Posts: 18
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Hi,
I checked the fuse, ok. Is there a breaker or in line fuse for my Rambler unit?
Thank you.
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BS
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11-14-2021, 07:14 PM
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#7
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Senior Member
Join Date: Nov 2020
Location: South Dakota
Posts: 445
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There is a reset procedure for that thermostat but I don't remember the bottom sequence. May find it online.
__________________
2004 Rexhall Roseair. 3955ET 370
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11-14-2021, 07:49 PM
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#8
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Junior Member
Join Date: Sep 2021
Location: Tucson, Az
Posts: 18
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I am new, to this group. First, thank you!
Motorhome, Holiday Rambler Vacationer
Year, 1998
35'
Ford Chassis
Again, thank you for your help.
__________________
BS
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11-14-2021, 09:14 PM
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#9
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Senior Member
Join Date: Nov 2015
Posts: 26,843
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__________________
I took my Medication today. HAVE YOU?
Dodge 3500 w/Tractor Motor
US NAVY---USS Decatur DDG-31
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11-15-2021, 06:29 PM
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#10
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Senior Member
Forest River Owners Club
Join Date: Dec 2010
Location: Livingston, TX
Posts: 1,088
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I don’t believe it actually says “heat” or at least mine doesn’t.....
You’ll see choices of cool, fan, heat pump (if your coach has them) and furnace....
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11-16-2021, 04:38 AM
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#11
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Junior Member
Join Date: Sep 2021
Location: Tucson, Az
Posts: 18
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Hi All,
Clean the connector on the board and board itself too. Connector and board were cover with dust!!! Also, a hornets nest!
After, cleaning it worked!!
Thank you, to all!
__________________
BS
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Linear Mode
