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Old 08-19-2016, 11:20 AM   #1
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Fridge won't work on 120VAC

2015 28DS

Dometic DM2652RBX

Won't work on 120VAC. I measured the outlet, it works. On circuit board both fuses are intact. Breakers fine. Get's cold on LP just fine.

On fridge itself it's on auto (prefers 120VAC, when no 120VAC, LP kicks in)

Any ideas folks?

PS, brand new.
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Old 08-19-2016, 11:30 AM   #2
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Unplug one lead in the electric element and measure the resistance across the element. It should read about 44 ohms.
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Old 08-19-2016, 11:59 AM   #3
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If it's new then get it to a dealer & let them deal with it. Otherwise if you want to fix yourself another option is to disconnect the 2 leads that go to the heater rod, turn off the fridge and then plug those 2 leads into a power cord. You can see where the heater goes into the boiler part of the cooling system. That heating element should be hot (don't burn yourself). If the fridge is cooling on LP then it sounds like you have a burnt out heating element. Make sure the fridge is level.
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Old 08-19-2016, 12:04 PM   #4
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Your picture of the fridge control shows no lights. Did you have it set on gas only setting? Press the on switch & turn it to auto. If the lights don't come on then be sure & check the fuse in the converter box as well as the 2 or 3 in your panel on the back of the fridge.
Just went through this little exercise when my fridge wouldn't cool on AC or LP. Ended up being a leaky cooling system & had to replace fridge.
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Old 08-19-2016, 12:04 PM   #5
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Quote:
Originally Posted by Bama Rambler View Post
Unplug one lead in the electric element and measure the resistance across the element. It should read about 44 ohms.

Would that be top or bottom in the picture?
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Old 08-19-2016, 12:12 PM   #6
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Quote:
Originally Posted by DutchRv View Post
Would that be top or bottom in the picture?
Top in that picture is the heating element; bottom is the propane stack overtemp sensor.

Check again your "gas only" switch is not on as suggested.
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Old 08-19-2016, 12:18 PM   #7
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Originally Posted by Herk7769 View Post
Top in that picture is the heating element; bottom is the propane stack overtemp sensor.

Check again your "gas only" switch is not on as suggested.
No it is set to auto
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Old 08-19-2016, 12:44 PM   #8
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No it is set to auto
If there are no lights on the panel, you need to check the fuse in the power panel.

However you say it gets cold on AC, so I assume you have good 12 volts.
I further assume the stack temp sensor is not open.

Next you need to check that there is 12 volts at the solenoid when the unit is calling for gas.

Try tapping on the top of the solenoid to see if it is hanging up due to possible corrosion inside.

Beyond that, you can check if you can smell propane when it is trying to light. Do you hear a snapping sound when its trying to light?

I have attached a troubleshooting guide that can go from there.
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Old 08-19-2016, 12:56 PM   #9
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You should have a GFCI protected outlet feeding the refer. If so reset it or replace.
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Old 08-19-2016, 12:59 PM   #10
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Originally Posted by Herk7769 View Post
However you say it gets cold on AC, so I assume you have good 12 volts.
Lou - Point of clarification, its the opposite, works on gas not on AC according to OP. but great info with the diagram and attachments.
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