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10-20-2012, 10:16 PM
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#1
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Member
Join Date: Jul 2012
Posts: 65
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Heater / furnace 350xl
Why would the AC units come when I run the furnace? Did not do this yesterday.
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10-20-2012, 11:24 PM
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#2
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Senior Member
Join Date: Dec 2011
Posts: 548
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Ours started doing the same thing (just the front unit) the last time our dealer worked on the front heat strip.
We were in the mountains early last spring so I had to flip the front AC breaker.
We’re waiting till it cools of a little more, then maybe they’ll be able to fix both.
3rd attempt for the heat strip, but they’re probably hard to work on when it’s over a hundred*.
ab and jb
__________________
2012 Georgetown 360
SHE wanted "a new motorhome"
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10-21-2012, 12:08 PM
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#3
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Member
Join Date: Jul 2012
Posts: 65
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So what is causing the AC to go on when the heartier is on and selected?
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10-21-2012, 02:32 PM
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#4
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Senior Member
Join Date: Dec 2011
Posts: 3,570
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Quote:
Originally Posted by SemperFi3088
Why would the AC units come when I run the furnace? Did not do this yesterday.
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In fan auto setting, helps circ the heated air?
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10-21-2012, 03:18 PM
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#5
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Senior Member
Join Date: Mar 2011
Location: Ontario
Posts: 411
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On the thermostat the fan has to be set on automatic or the AC fan will come on.
__________________
2012 Georgetown 378TS Fire Mist
2008 Honda Fit
ReadyBrake™ Surge Brake System integrated with ReadyBrute™ Elite RV Tow Bar
Protect-A-Tow
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10-21-2012, 03:30 PM
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#6
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Senior Member
Join Date: Jul 2010
Posts: 7,948
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Quote:
Originally Posted by Falcon35
On the thermostat the fan has to be set on automatic or the AC fan will come on.
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X2
Yes if the fan needs to be set to AUTO.
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10-21-2012, 03:55 PM
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#7
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Member
Join Date: Jul 2012
Posts: 65
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Thanks. I will check out. Appreciate this forum and all that contribute. Looking forward to the day when I'm not a "taker"
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10-21-2012, 04:39 PM
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#8
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Senior Member
Join Date: Mar 2011
Location: Ontario
Posts: 411
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Glad to help. Then it makes it easier to ask for help when I need it. And I have been helped a number of times on this forum.
__________________
2012 Georgetown 378TS Fire Mist
2008 Honda Fit
ReadyBrake™ Surge Brake System integrated with ReadyBrute™ Elite RV Tow Bar
Protect-A-Tow
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10-22-2012, 09:43 AM
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#9
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Senior Member
Join Date: Jul 2012
Location: Western New York State
Posts: 1,923
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Does GT use crappy thermostats? I can't seem to keep the furnace on and regulated unless the thermostat is set to 71. On way home from Nashville it got down to 31 overnight and woke up to a freezing coach. At 60 the furnace kicked on then shut off after 20 seconds. Could not get it to fire back up so had to start the engine and run the dash heat (now that's efficient). Same thing happened just this past weekend, but this time it would operate at 71 and above.
__________________
sherman12 and The Fabulous Miss Barb
2014 SportsCoach Cross Country 360DL DP
Former 2011 Georgetown 330TS
Kia Sportage on MasterTow Dolly
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10-22-2012, 08:11 PM
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#10
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Tim & Lisa Trempert
Join Date: Sep 2008
Posts: 458
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Are you sure you don't have a carbon monoxide leak and the detector is shutting off the gas? When you say it "fires up" is that the ignition or the fan that is starting? You should hear the fan start first and then the gas should light a little later. Also, only the front thermostat (not the rear) controls the furnace in the 350. If you're adjusting the rear thermostat you'll get nowhere.
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Tim & Lisa
2011 Georgetown 350
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10-23-2012, 08:44 AM
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#11
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Senior Member
Join Date: Jul 2012
Location: Western New York State
Posts: 1,923
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Trempert, only used the front thermostat on the wall, street side against the fridge above the sink. Yes the fan comes on first before the furnace ignites and blows warm air. If I had a carbon monoxide leak it would not operate at the higher settings of 71 and above.
__________________
sherman12 and The Fabulous Miss Barb
2014 SportsCoach Cross Country 360DL DP
Former 2011 Georgetown 330TS
Kia Sportage on MasterTow Dolly
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10-23-2012, 05:06 PM
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#12
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Member
Join Date: Jul 2012
Posts: 65
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Switching fan to Auto mode fixed it. Have to remind my brother to keep his fingers to himself
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10-23-2012, 09:05 PM
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#13
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Senior Member
Join Date: May 2010
Location: Montrose, Colorado
Posts: 101
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A few years ago on our first outing with our MH we had gas detector issues. After one cold night, I toggled the switch on the gas detector and we finally got heat. Since, I always carry a couple of ceramic space heaters as back ups.
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10-24-2012, 07:29 AM
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#14
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Senior Member
Join Date: Jul 2012
Location: Western New York State
Posts: 1,923
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Went on line and got the Dometic thermostat manual for model 3313192. Of course GT does not provide one with coach. I re-initialized the thermostat as stated in the manual and with the rig sitting in the drive way it seems to work fine. I'll wait to a real cold night and sit in the Moho and see if it cycles. Also, reading the manual I did not know myself about the fan settings between auto, hi and low which will also activate the AC units fan for increased circulation of air.
__________________
sherman12 and The Fabulous Miss Barb
2014 SportsCoach Cross Country 360DL DP
Former 2011 Georgetown 330TS
Kia Sportage on MasterTow Dolly
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10-24-2012, 09:52 AM
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#15
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Senior Member
Join Date: Dec 2011
Posts: 548
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Quote:
Originally Posted by sherman12
Went on line and got the Dometic thermostat manual for model 3313192. Of course GT does not provide one with coach. I re-initialized the thermostat as stated in the manual and with the rig sitting in the drive way it seems to work fine. I'll wait to a real cold night and sit in the Moho and see if it cycles. Also, reading the manual I did not know myself about the fan settings between auto, hi and low which will also activate the AC units fan for increased circulation of air.
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Sherman could you give us your link.
I’ve been searching the Dometic web and the only things I can find for the “Single Zone LCD Thermostat” are these.
http://www.dometic.com/enus/Americas/USA/RV-Products/climate/ac-display-page/?productdataid=97074
http://www.dometic.com/75ba5bd6-30af-405e-ac27-b057ade5d705.fodoc
jb and I have the 3313189.049 Cool/Furnace/Heat Strip – White
I’ve been to the Operation & Installation Manuals section???
Thanks
ab and jb
__________________
2012 Georgetown 360
SHE wanted "a new motorhome"
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10-24-2012, 02:18 PM
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#16
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Senior Member
Join Date: Jul 2012
Location: Western New York State
Posts: 1,923
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abjb, this is the pdf link for the Dometic thermostat wwww.primetimerv.com/.../Thermostat-SingleZoneDigital-Dometic-hich does cover units with heat pumps and heat strips
__________________
sherman12 and The Fabulous Miss Barb
2014 SportsCoach Cross Country 360DL DP
Former 2011 Georgetown 330TS
Kia Sportage on MasterTow Dolly
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