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05-29-2017, 06:09 PM
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#1
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Senior Member
Join Date: Mar 2017
Location: Verona, KY
Posts: 320
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Dometic Refrigerator
Newbie question. Out on our maiden voyage. Does the model RM1350 run off of 12V when towing, or is my only option to run it on propane while towing?
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New: 2021 Solitude 380FL
Old: 2016 Alpine 3600RS
Tow: 2017 F-350 DRW diesel
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05-29-2017, 06:17 PM
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#2
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Junior Member
Join Date: Sep 2012
Location: Imperial, MO
Posts: 14
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I believe that is a 2 way fridge so it will operate on propane or 110 when plugged in. Your only option while towing will be propane.
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Steve and Kim
2017 Montana High Country 370BR
2016 Ram 3500 6.7 SRW
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05-29-2017, 06:31 PM
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#3
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,317
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12V is needed to power the control board. Depending on what you set it to (auto/LP) will determine what it uses to cool.
Auto: it will always choose 110VAC if it's available, if not AND the propane is turned on it will light the flame and run on LP. When you plug the trailer back in to shore power, the control board will shut off the flow of propane and send 110V to the heating element.
LP mode- it will only operate on LP.
EITHER WAY requires 12V to the control board, most will continue to operate until voltage drops to about 11.4 volts (I think that's the threshold).
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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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05-31-2017, 07:24 AM
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#4
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Senior Member
Join Date: Mar 2017
Location: Verona, KY
Posts: 320
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Even with just propane for the refrig, should it take over 12 hours to cool down to usable temps? Or is there something wrong with the unit?
__________________
New: 2021 Solitude 380FL
Old: 2016 Alpine 3600RS
Tow: 2017 F-350 DRW diesel
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05-31-2017, 07:33 AM
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#5
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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Quote:
Originally Posted by captcolour
Even with just propane for the refrig, should it take over 12 hours to cool down to usable temps? Or is there something wrong with the unit?
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Depends on ambient temp, what and how much you loaded it with.. My rule of thumb for cooling the fridge before a trip is to start with an empty fridge and freezer turning it on at least 24 hrs before loading it with frozen or pre-cooled foods.
Javi
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2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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05-31-2017, 07:47 AM
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#6
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Senior Member
Join Date: Mar 2017
Location: Verona, KY
Posts: 320
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Thanks. There was nothing in it. Ambient temp around 70F.
__________________
New: 2021 Solitude 380FL
Old: 2016 Alpine 3600RS
Tow: 2017 F-350 DRW diesel
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05-31-2017, 08:19 AM
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#7
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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12 hours is not unreasonable at all... like I said, 24hr is my rule of thumb.. remember RV fridges remove the heat, they don't make cold...
Javi
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2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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05-31-2017, 08:27 AM
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#8
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Senior Member
Join Date: Apr 2017
Location: Oswego
Posts: 604
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Would take 6 to 8 to cool down - about 40 degrees in the fridge on our last RV.
Our last RV had a Dometic too . Left it in AUTO and before we left to hit the road I checked to make user it switched to GAS - no "check" light. Sometimes you can hear the gas flowing.
Would helped with the cool down time when it is 70 degrees or warmer was an additional fan in the back. Our last RV only came with one fan and I don't think it provided adequate air flow for cool down. Our present RV has 3 fans in the rear - 1 small and 2 larger ones.
Pictures show the fan I added (SilenX Effizio Silent 120mm Thermistor Edition Fan controlled by an on-off rocker switch) and the one installed at the factory.
Also is the thermister installed on the correct fin and hight.
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RV - 2017 Avalanche 320RS
TV - 2011 Chevy Silverado 3500HD LTZ CCLB Duramax SRW 4X4
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05-31-2017, 04:15 PM
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#9
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Senior Member
Join Date: Mar 2017
Location: Bucks County, PA
Posts: 281
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Where did you get the thermister?
Sent from my LG-H810 using Tapatalk
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-- Mark
I used a multi-billion dollar government satellite navigation system to look for a rubber chicken in a tree!
2017 Bullet 248RKS towed by a 2011 Chevrolet Silverado 5.3L V8 W/ AFM
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05-31-2017, 04:53 PM
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#10
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Senior Member
Join Date: Apr 2017
Location: Oswego
Posts: 604
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Quote:
Originally Posted by BuxCamper
Where did you get the thermister?
Sent from my LG-H810 using Tapatalk
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SilenX Effizio Silent 120mm Thermistor Edition Fan - Amazon.
Some Doemtic fridges have it for the sensor and you move the plastic piece holding it it up or down to control the temperature. Our Norcold has a sensor but I don't move it to control the temperature. Sensor on 2nd fin in from right.
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RV - 2017 Avalanche 320RS
TV - 2011 Chevy Silverado 3500HD LTZ CCLB Duramax SRW 4X4
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