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02-25-2021, 05:32 PM
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#1
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Junior Member
Join Date: Feb 2021
Location: Sacranento
Posts: 10
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Dometic Fridge Auto Issue
I have a new 2021 Keystone Cougar and our RV fridge shows auto lit but also the LP is lit too. We are connected to 50 amp so why is LP showing lit up too? We are in Houston Texas and very humid. Is the LP better for keeping the fridge cooled when in the humid climate? This is our first fridge so all mew for us.
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02-25-2021, 05:39 PM
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#2
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,317
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First thing I would do is verify the fridge is in fact plugged in and the outlet has power.
Go outside and open the lower access panel. You should see the cord and an outlet on the left side. You can use anything electrical to plug in and see if there is power. If no power then start looking for a GFCI reset, probably in the bathroom. Come back and tell us what you found.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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02-25-2021, 05:50 PM
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#3
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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Then go online or to your nearest rv supply store & get a surge protector/EMS (it must be an EMS) in whatever your rv amperage is rated either hardwired or portable as long as it's being used EVERY time the rv is plugged into shore power.
__________________
Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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02-25-2021, 06:06 PM
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#4
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Senior Member
Join Date: Aug 2020
Location: Upper Chesapeake Bay
Posts: 4,819
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Quote:
Originally Posted by Doublej
I have a new 2021 Keystone Cougar and our RV fridge shows auto lit but also the LP is lit too. We are connected to 50 amp so why is LP showing lit up too? We are in Houston Texas and very humid. Is the LP better for keeping the fridge cooled when in the humid climate? This is our first fridge so all mew for us.
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I will look at mine tomorrow but I think they are both always lit up and there will be a little red dot next to whichever is chosen
__________________
2020 Cougar 315 RLS
2020 Ram 3500 6.7HO 4.10 Dually Aisin
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02-25-2021, 07:29 PM
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#5
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,317
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IIRC, if both the “auto” and “LP” lights are illuminated then fridge is operating in LP mode. Auto light only will be AC.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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02-26-2021, 11:27 AM
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#6
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Junior Member
Join Date: Feb 2021
Location: Sacranento
Posts: 10
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So after doing some investigation, and also w/ the help of an RV tech who was working on a few other things on my rig today, we found out that the fuse on my board blew and so it automatically went to LP because of this. The RV tech did not understand why it blew as I have a Power Watchdog connected and has always been plugged in. The rig is only 4 weeks old (well I have only had it for 4 weeks) and he said in his time he hasn't seen this before, especially w/ such a new unit. Now to find a fuse for it as it is one of those lovely tube ones.
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02-26-2021, 11:30 AM
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#7
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,317
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Glad you figured it out. Any auto parts store will have fuses.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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02-26-2021, 11:35 AM
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#8
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Junior Member
Join Date: Feb 2021
Location: Sacranento
Posts: 10
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This is the fuse it was: T5al250vp, I assume I need to get the exact type correct or is there some other one I could get?
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02-26-2021, 11:37 AM
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#9
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,317
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Any 5A fuse will do. I believe they are all pretty much rated for 250 volts.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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02-26-2021, 11:56 AM
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#10
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Senior Member
Join Date: Mar 2014
Location: Mountain Home, Idaho
Posts: 3,007
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I’d use a multi meter and do a resistance check on the two heating elements as they are what’s in line with that 120 VAC glass fuse
__________________
2007 GMC Classic club cab 4x4 Duramax LBZ
2014 Alpine 3010 RE. 34 foot fifth wheel
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