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Old 11-18-2017, 10:37 PM   #1
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Gas/Electric fridge

I️ have a Fleetwood RV with a small Dometic has/ac fridge . It switches automatically from ac to propane when the power is cut. However, I️ had an odd thing happen I️ canít explain. Iím hoping someone else with more knowledge can. I️ parked in front of my house with a very low propane level possibly completely out. I plugged the RV into shore power so the food and freezer would stay cool. I️t was about 40 degrees out so I️ fired up the furnace to get the coach warm for the cats before I️ went in for the night. I️ believe I️ used up the last pound of propane doing that. The next day I️ discovered my frozen food had thawed and fridge was not cold. Iím pretty sure the switch was set to auto. Meaning either ac or gas which ever one is available. Does anyone think being totally drained of gas affected the ac operation of the fridge? Not sure how it could.
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Old 11-18-2017, 10:45 PM   #2
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In 'AUTO' Mode 120V AC is priority heating source.........upon LOSS of AC Power fridge will swap to "GAS" and swap back to 120V AC when AC Power is restored

In 'MANUAL' Mode........GAS only option. No AC Manual Mode.
In Manual GAS fridge stays on GAS. If propane runs out----Check Light will come on
NO swapping to AC Mode.


If in 'AUTO' the AC power was lost.swapped to Gas....no propane/ran out....no AC Power ----fridge stopped working /warmed up

In GAS........no propane/ran out........fridge stopped working/warmed up

So was it in AUTO or was it in GAS Mode?
Did you loose 12V DC Power?
No 12V DC....no workie AC or GAS
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Old 11-19-2017, 08:31 AM   #3
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Old Biscuit covered it well. You need to determine if the fridge was actually in Auto mode. If not, and the fridge was actually running on LP, the check light would come on when the LP was gone. Was it on?

Might you have lost shore power sometime during the night? Maybe a tripped breaker where the RV was plugged in?
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Old 11-19-2017, 08:46 AM   #4
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I agree with previous posts. Also, check to make sure gfci is not tripped.
It has happened to me twice on 2 different motorhomes over the years. Plug in the mh to cool the fridge before a weekend, and fridge only runs on gas. Gfci tripped in the bathroom.
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