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09-09-2018, 02:51 PM
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#1
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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Another thermostat question
I have the single zone thermostat in my ‘17 345rl. I can’t get the ac, heat pump or, furnace to work. Any thoughts. I would try a reset but, can’t find the manual for it. Also have checked breakers. The unit will switch modes and temps but, won’t turn the fan on or anything else. TIA.
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2017 HC 345RL
2015 F-250
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09-09-2018, 03:02 PM
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#2
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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Try turning it off for about 5 seconds and then back on.
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2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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09-09-2018, 03:05 PM
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#3
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Seasoned Camper
Join Date: Apr 2018
Location: Calgary
Posts: 60
M.O.C. #21572
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I have an issue as well. We have 2 zones but on the main zone if I switch it to the furnace , the AC unit also turns on the fan. The only way I can get just the furnace to go on is to turn the AC breaker off. It’s on the warranty list for the end of the summer . . . . . I gues we are there.
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Perry & Karen, Calgary, Alberta
2017 F350 SRW CC 4X4 6.7L — 2018 Montana 3720RL
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09-09-2018, 03:18 PM
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#4
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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Quote:
Originally Posted by WeBeFulltime
Try turning it off for about 5 seconds and then back on.
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Yep did that a few times. Even left it off for an hour at one point.
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2017 HC 345RL
2015 F-250
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09-09-2018, 04:15 PM
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#5
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,676
M.O.C. #12947
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I found this youtube about that thermostat, but no manual. You might call Dometic if you can't get it working. You do have power to the heater and A/C?
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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09-09-2018, 04:58 PM
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#6
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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I saw that video thanks. Not sure about the power though. No volt meter with me.
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2017 HC 345RL
2015 F-250
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09-09-2018, 06:28 PM
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#7
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Quote:
Originally Posted by TBW Ventures
I have an issue as well. We have 2 zones but on the main zone if I switch it to the furnace , the AC unit also turns on the fan. The only way I can get just the furnace to go on is to turn the AC breaker off. It’s on the warranty list for the end of the summer . . . . . I gues we are there.
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Do you have the fan set on Auto when you run the furnace. If not you'll get what you describe.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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09-10-2018, 09:57 AM
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#8
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Seasoned Camper
Join Date: Apr 2018
Location: Calgary
Posts: 60
M.O.C. #21572
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I just checked double checked and no it is not on auto. It’s very strange.
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Perry & Karen, Calgary, Alberta
2017 F350 SRW CC 4X4 6.7L — 2018 Montana 3720RL
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09-11-2018, 04:06 AM
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#9
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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New twist to my problem. This morning I get up and it’s cold in the coach. So I turned on the fireplace to take the edge off. Then I thought try the furnace. As I scrolled through the thermostat I see the heat pump option had disappeared. Turned it to furnace and it fired up and worked.( unlike the last two days.) about 5 minuets later I scroll through again and, the heat pump option is back and, working. Can’t wait for tonight when I get back from work to see if the a/c is back working. Either way I have an appointment on Friday at the dealer for some warranty work including this problem.
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2017 HC 345RL
2015 F-250
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09-11-2018, 07:29 AM
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#10
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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There are known issues with the newer thermostats. If you call Dometic they will most likely send you a new one.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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09-11-2018, 05:04 PM
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#11
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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Thanks DQ. All I’m working fine again. The rig is going in Friday for this and other minor problems. If they don’t figure out the thermostat problem I will call Dometic.
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2017 HC 345RL
2015 F-250
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09-25-2018, 08:13 PM
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#12
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Montana Fan
Join Date: Jan 2018
Location: Box Elder
Posts: 247
M.O.C. #21057
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Looks like a thermostat in bed room which will not operate furnace or heat pump. AC only
__________________
2018 Montana High Country 331RL
2006 Ram 2500 SRW 4X4 Laramie Quad Cab 5 .9
Andersen Ultimate 20K Hitch Lippert Solid Steps Steady Fast stabilizes
Rex and Patsy
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09-25-2018, 09:30 PM
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#13
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Seasoned Camper
Join Date: Apr 2018
Location: Calgary
Posts: 60
M.O.C. #21572
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I dropped the rig off last weekend for warranty work including the thermostat and ac controls. We also have no heat or blower from the fireplace, just lights.
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Perry & Karen, Calgary, Alberta
2017 F350 SRW CC 4X4 6.7L — 2018 Montana 3720RL
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09-26-2018, 03:46 AM
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#14
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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Dealer called yesterday to tell me they were done. I was told there were some bare wires up on the main unit that they fixed. He said they must have made contact while going down the road. Not saying he’s wrong but, when this all started the unit had been set up for two months and not moved. We’ll just have to get it set up again at the next job and see how things are. The good thing is the dealer only had it for and a half and got all the items fixed. This is one of the good guys.
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2017 HC 345RL
2015 F-250
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09-26-2018, 03:51 AM
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#15
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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Quote:
Originally Posted by footz1941
Looks like a thermostat in bed room which will not operate furnace or heat pump. AC only
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Yep same thermostat but down in the main coach and it does run all of it.
__________________
2017 HC 345RL
2015 F-250
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