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10-25-2016, 08:02 AM
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#1
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1 Rivet Member
Currently Looking...
2014 Interstate Ext. Coach
Weymouth
, Massachusetts
Join Date: Aug 2016
Posts: 19
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Question about heat
When I turn on heat, the propane heater comes on(the one below the micro) but so does the overhead a/c unit. Is that normal operation? I would think not and my thought is the thermostat on the wall must be defective.
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10-25-2016, 08:26 AM
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#2
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Rivet Master
2006 22' Interstate
League City
, Texas
Join Date: Jan 2015
Posts: 698
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It sounds like the thermostat is miswired.
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10-25-2016, 09:04 AM
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#3
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Rivet Master
1991 34' Excella
Princeton
, New Jersey
Join Date: Aug 2003
Posts: 7,070
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I would not think that it would ever be wired to have both the propane and the heat strip on at the same time.
If they are both controlled by the same thermostat I would think there is a selection switch to set one or the other as being on.
The other option is your AC heat strip may be controlled on the AC itself. Older ACs worked this way.
__________________
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles
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10-25-2016, 09:12 AM
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#4
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Rivet Master
1964 22' Safari
modesto
, California
Join Date: Jul 2010
Posts: 1,094
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Mine did the same thing. I thought the thermostat had gone bad, I bought a new one. It worked for a while then did the same thing. I called the manufacture (Dometic) technical support and they walked me through resetting and synchronizing it to the compressor unit, it works perfectly now. Best of luck!
-Dennis
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10-25-2016, 09:28 AM
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#5
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J&J In A Can
2016 Interstate Grand Tour Ext
Cottonwood
, Arizona
Join Date: Nov 2015
Posts: 74
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Ours did that too. If you go to the last page of the Dometic owners manual, it tells you how to reset the thermostat. That fixes it. All it takes is someone pressing keys somewhat randomly to mess it up. We were on the road when it happened and had to look the manual up on line. Good luck!
__________________
2016 Interstate GT Twin
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10-25-2016, 10:05 AM
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#6
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Rivet Monster
1975 31' Sovereign
1980 31' Excella II
Sprung Leak
, North Carolina
Join Date: Jun 2003
Posts: 7,172
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Thermostat needs to be reset. Look in your manual. It has to do with the fan settings.
Aaron
__________________
....so many Airstreams....so little time...
WBCCI #XXXX AIR #2495
Why are we in this basket...and where are we going
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10-25-2016, 11:31 AM
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#7
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1 Rivet Member
Currently Looking...
2014 Interstate Ext. Coach
Weymouth
, Massachusetts
Join Date: Aug 2016
Posts: 19
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Thank you
Thanks for all the quick responses....I had tried reading thru the manuals, must have missed it. I will try again tonight after work.
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10-25-2016, 08:53 PM
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#8
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1 Rivet Member
Currently Looking...
2014 Interstate Ext. Coach
Weymouth
, Massachusetts
Join Date: Aug 2016
Posts: 19
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All is good
Heat is working properly after easy reset. Hold mode and zone buttons simultaneously when unit is in off position, screen reads IniT, release buttons then press on button and all is good.
It is starting to get cold in this area.
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11-22-2016, 06:20 PM
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#9
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4 Rivet Member
2015 Interstate Ext. Coach
Columbus
, Ohio
Join Date: Sep 2016
Posts: 430
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We experienced the same thing the first time we used our heater. I found that by switching the fan option to Auto, the blower stopped as well!
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11-23-2016, 02:55 AM
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#10
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2 Rivet Member
2017 Interstate Grand Tour Ext
Gallatin Gateway
, Montana
Join Date: Nov 2016
Posts: 42
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Quote:
Originally Posted by Mister B
We experienced the same thing the first time we used our heater. I found that by switching the fan option to Auto, the blower stopped as well!
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For 2017 AI owners, the instructions state that the thermostat fan must be set to Auto to avoid having the rooftop AC fan run during heating. I tried it and it works as described.
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11-23-2016, 05:32 AM
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#11
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Rivet Master
2014 25' Flying Cloud
Cuddebackville
, New York
Join Date: May 2007
Posts: 4,333
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Quote:
Originally Posted by Mister B
We experienced the same thing the first time we used our heater. I found that by switching the fan option to Auto, the blower stopped as well!
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This is the answer, as confirmed to me by a Dometic dealer. I think I finally found it buried in the manual too. If the fan is set to low medium or high, it will come on with the furnace. If it's on auto it won't.
I suspect the thermostat reset, among other things, sets it to a default mode of auto.
__________________
2014 25' Flying Cloud Rear Twin
2019 Ford Expedition Platinum
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11-23-2016, 06:01 AM
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#12
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Rivet Master
Currently Looking...
Mantua
, Ohio
Join Date: Jul 2005
Posts: 7,062
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Owners manuals are wonderful things, but only if read.
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11-23-2016, 07:14 AM
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#13
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Rivet Master
2014 25' Flying Cloud
Cuddebackville
, New York
Join Date: May 2007
Posts: 4,333
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Quote:
Originally Posted by avionstream
Owners manuals are wonderful things, but only if read.
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But they can certainly be made more readable.
__________________
2014 25' Flying Cloud Rear Twin
2019 Ford Expedition Platinum
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