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07-22-2021, 08:33 PM
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#1
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Montana Fan
Join Date: Mar 2020
Location: Frostbite Falls
Posts: 433
M.O.C. #26015
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Does your Res. fridge not cool when towing in hot?
Mine tends to get up to about 55 degs when towing in temps above 90 deg.
The battery was 13.2 volts when I stopped.
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07-23-2021, 04:19 AM
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#2
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,140
M.O.C. #25165
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Are you running on the inverter? Ours keeps temps very well when travelling. I've even had it making ice while travelling. I always make sure after disconnecting shore power that the inverter is on and running so the fridge can run on battery. There is a disconnect in the battery compartment on the wall above the battery box, and the inverter itself must be turned on as well. Mine has a green button on the face you have to hold in for a few seconds to turn on/off.
__________________
Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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07-23-2021, 05:45 AM
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#3
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Montana Master
Join Date: Oct 2019
Location: Hesston
Posts: 735
M.O.C. #25060
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Quote:
Originally Posted by RMcNeal
Are you running on the inverter? Ours keeps temps very well when travelling. I've even had it making ice while travelling. I always make sure after disconnecting shore power that the inverter is on and running so the fridge can run on battery. There is a disconnect in the battery compartment on the wall above the battery box, and the inverter itself must be turned on as well. Mine has a green button on the face you have to hold in for a few seconds to turn on/off.
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Same here, ours stays at temp when traveling.
Check your inverter to make sure that it's on. I'm assuming from your post that the inverter is on, though, since you're checking it, or making that's the temp that you're seeing after plugging into shore power...
__________________
2020 Montana 3741FK
2020 Chevy SRW 3500HD Duramax/Allison High Country
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07-23-2021, 08:00 PM
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#4
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Montana Fan
Join Date: Dec 2020
Location: STUARTS DRAFT, VA
Posts: 140
M.O.C. #27830
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Quote:
Originally Posted by RMcNeal
Are you running on the inverter? Ours keeps temps very well when travelling. I've even had it making ice while travelling. I always make sure after disconnecting shore power that the inverter is on and running so the fridge can run on battery. There is a disconnect in the battery compartment on the wall above the battery box, and the inverter itself must be turned on as well. Mine has a green button on the face you have to hold in for a few seconds to turn on/off.
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Ours too. we just did 6 weeks in ours with many days 95+ and the refrigerator was never an issue, travelling or parked.
__________________
John and Carrie
2021 Montana 3121RL Legacy
2020 F-250 Lariat 4X4 Short 3.55
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07-23-2021, 08:50 PM
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#5
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Montana Fan
Join Date: Mar 2020
Location: Frostbite Falls
Posts: 433
M.O.C. #26015
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Nothing to do with fridge but I forgot to turn the water heater on but water was still hot after 12 hrs. 
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07-23-2021, 07:12 AM
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#6
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Montana Fan
Join Date: Mar 2020
Location: Frostbite Falls
Posts: 433
M.O.C. #26015
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Inverter is on, it seems like when it gets hot inside the camper the battery can't run it. I have found the battery being low at times. It's getting 13.7 volts from the truck.
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07-23-2021, 07:51 AM
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#7
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Montana Master
Join Date: Oct 2019
Location: Hesston
Posts: 735
M.O.C. #25060
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Quote:
Originally Posted by 77cruiser
Inverter is on, it seems like when it gets hot inside the camper the battery can't run it. I have found the battery being low at times. It's getting 13.7 volts from the truck.
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Hummm...
The one thing that I've found is an issue is that the fuse that supplies 12V to the trailer plug in my truck often blows, and it's a 30A fuse. But, if that doesn't blow, our voltage stays up, and it doesn't matter how hot it is outside, the fridge can keep up...
__________________
2020 Montana 3741FK
2020 Chevy SRW 3500HD Duramax/Allison High Country
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07-23-2021, 08:40 AM
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#8
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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You note "battery" in your post. Are you saying you only have one, which is also probably a group 24 or 27 size? Is so, you may want to think about replacing it with new batteries more up to the task at hand.
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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07-23-2021, 08:43 AM
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#9
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New Member
Join Date: Apr 2021
Location: HAINESPORT
Posts: 7
M.O.C. #28596
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I have a similar issue. But it is not the inverter itself, that stays on when I disconnect shore power BUT the GFI that the refrigerator plugs into blows and needs to be reset. Check that each time before leaving after disconnecting the shore power.
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07-23-2021, 09:06 AM
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#10
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Montana Master
Join Date: Jun 2017
Location: POINTBLANK
Posts: 1,888
M.O.C. #19944
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Would the gfi impact fridge regardless of power source? Sounds like it might be time to change gfi or find the issue.
__________________
 RAM 22' DRW 3500 Crew LB 40 gal reserve tank / RETRAX Bed Cover / 2020 373RD HC / IS / MOPEKA Tank Monitor / Furrion Side&Rear Cameras
Slide Toppers / EMS-HW50C / Sailun 85's
3rd AC / Dometic 320
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07-23-2021, 09:13 AM
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#11
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Montana Fan
Join Date: Mar 2020
Location: Frostbite Falls
Posts: 433
M.O.C. #26015
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Never blown the fuse on the truck, the GFCI has tripped a couple time but not the last few times.
I was suspecting the battery & had it load tested, showed OK FWIW.
Group 24 Interstate 3 years old, so it might be time.
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07-23-2021, 01:17 PM
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#12
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,550
M.O.C. #2283
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I guess you have one battery and it has 13.2 volts after you stop and the refrigerator is 55 degrees. That says you have been on the road for awhile and to me your refrigerator wasn’t running. If it was unplugged this is what I would suspect would happen. Your refrigerator isn’t running while you are unhooked.
Lynwood
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07-23-2021, 09:15 AM
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#13
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New Member
Join Date: Apr 2021
Location: HAINESPORT
Posts: 7
M.O.C. #28596
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GFI is built right into the Inverter. 2021 Montana I have been going round and round with CW on repairing or replacing. I think the issue is the transfer switch.
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07-25-2021, 11:40 AM
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#14
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Seasoned Camper
Join Date: Jan 2019
Location: Winter Haven
Posts: 76
M.O.C. #23309
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If you read the manual on the refrigerator it states NOT to use a GFI circuit. I read a post on this site that he removed the GFI outlet on the inverter and solved his problem. I replaced my GFI on the inverter with a plan outlet and solved all my problems.
__________________
2019 3121RL
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07-23-2021, 03:35 PM
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#15
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Montana Fan
Join Date: Mar 2020
Location: Frostbite Falls
Posts: 433
M.O.C. #26015
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Today about an 1 1/2 hrs. into the trip I stopped & checked, fridge was 60 already. Fired up the generator I brought this time 2 hrs. we got to out spot fridge was at 36.
I think I'm going to grab a new battery & see what happens.
GFCI wasn't tripped.
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07-23-2021, 07:06 PM
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#16
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Seasoned Camper
Join Date: Apr 2020
Location: Panhandle of Florida
Posts: 99
M.O.C. #26098
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Quote:
Originally Posted by 77cruiser
Today about an 1 1/2 hrs. into the trip I stopped & checked, fridge was 60 already. Fired up the generator I brought this time 2 hrs. we got to out spot fridge was at 36.
I think I'm going to grab a new battery & see what happens.
GFCI wasn't tripped.
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Two different power sources ... the genny would be considered "shore power" by the fridge. I'd bet that you do not have 120vac while running on the inverter. Either the inverter is bad, the gfci on the inverter (this is where the fridge gets its 120vac) is tripped, or your transfer switch doesn't "fall back" to inverter when not on shore power.
__________________
2020 Montana High Country 295RL
10th Anniversary Edition
2019 Silverado 3500HD, Duramax, LTZ, SRW, CC, 4WD, 8'Bed
Reese M5 - 20K
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07-24-2021, 07:22 PM
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#17
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,550
M.O.C. #2283
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Quote:
Originally Posted by 77cruiser
Today about an 1 1/2 hrs. into the trip I stopped & checked, fridge was 60 already. Fired up the generator I brought this time 2 hrs. we got to out spot fridge was at 36.
I think I'm going to grab a new battery & see what happens.
GFCI wasn't tripped.
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When you stopped today what was the voltage in your camper battery when unhooked from your truck? Sounds to me your refrigerator isn’t running while you are on the battery. As others have stated you could have a problem with the refrigerator warming up to fast but that’s isn’t why it’s warming up while you are traveling.
Lynwood
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07-23-2021, 03:48 PM
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#18
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Montana Master
Join Date: Dec 2007
Location: Kansas City, Missouri
Posts: 2,707
M.O.C. #7992
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If your fridge is warming up that much in 1 1/2 hours you have a seperate problem besides it not running. With the door closed and the contents already cold there is no way it should be warming up that much unless you have a major flaw in the box or seals.I would be checking door seals are something along that line. Cold is leaking out somewhere.
__________________
2006 3000RK
2009 Ram 2500
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07-23-2021, 03:53 PM
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#19
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Montana Fan
Join Date: Mar 2020
Location: Frostbite Falls
Posts: 433
M.O.C. #26015
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I was wondering about that too, cause we have the fridge & freezer pretty full.
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07-23-2021, 04:36 PM
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#20
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Montana Fan
Join Date: Mar 2020
Location: Frostbite Falls
Posts: 433
M.O.C. #26015
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Seals look good.
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