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My dometic 2852 camper fridge is not working. It will work

Customer Question
Hi. My dometic 2852 camper...
Hi. My dometic 2852 camper fridge is not working. It will work on gas but not electric. We replaced the circuit board and the heating element and it still isn't working. We have a 2011 Heartland Elkridge fifth wheel. Any suggestions?
Submitted: 1 year ago.Category: RV
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Answered in 3 minutes by:
7/12/2016
RV Mechanic: Michael Reush, RV Technician replied 1 year ago
Michael Reush
Michael Reush, RV Technician
Category: RV
Satisfied Customers: 3,249
Experience: Serving the rv industry since 1977
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Hi sorry for your worries, you need to use your voltmeter, and see if there is actually power going to the heater when on ac. I see you have replaced the board and the elements, lets do the troubleshooting as if you have not, also on the board there are a couple of fuses on the circuit board, the glass fuse is for 120vac the flat 5amp fuse is for 12volt, make sure it is good...............test with your voltmeter where the element is connected to the board, see if there is 120vac there when on ac.............Also check the outlet that the refer is plugged into for 120vac, let me know what you find. thanks

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Customer reply replied 1 year ago
I'm getting 120V to the board on both sides of the fuse and the DC fuse is good as well. My problem is that the + side of the heating element is not getting power when the unit is turned on forcing it to convert to LP.
RV Mechanic: Michael Reush, RV Technician replied 1 year ago

when you refer to the + side of the element is your refer 3 way, and are you trying to operate it on dc?

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Customer reply replied 1 year ago
There is a AC neutral plug and another plug on the circuit board that the element plugs into. The J8 plug on board.
RV Mechanic: Michael Reush, RV Technician replied 1 year ago

thanks that is indeed the ac element, with your voltmeter on ac, do you see voltage on the terminals to the element?

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Customer reply replied 1 year ago
No.
RV Mechanic: Michael Reush, RV Technician replied 1 year ago

Double check to make sure there is ac going to the board, check the outlet, then the prongs on the board where the ac is attached, thanks

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RV Mechanic: Michael Reush, RV Technician replied 1 year ago

Do you see ac voltage at the glass fuse ? test against the fuse, and ground

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Customer reply replied 1 year ago
120 at the outlet, fuse and plugs on the board where the cord connects to the board. Nothing at the element.
RV Mechanic: Michael Reush, RV Technician replied 1 year ago

when you put the refer on auto, what does it do? does it switch to gas?

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Customer reply replied 1 year ago
After a couple seconds it switches to gas
RV Mechanic: Michael Reush, RV Technician replied 1 year ago

The board is not switching over, as you have replaced it, this can be the wiring to the interior eyebrow, or the eyebrow itself, I am forwarding you the service manual for the refer clickhere

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Customer reply replied 1 year ago
What do I need to check on the eyebrow
RV Mechanic: Michael Reush, RV Technician replied 1 year ago

go to 5.8 page 13 it has the testing proceedure

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Customer reply replied 1 year ago
Did the test and have voltage where it told me to test
RV Mechanic: Michael Reush, RV Technician replied 1 year ago

Go back to the circuit board on the back, make sure the wires are correct. mainly the 12volt supply to the board

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Customer reply replied 1 year ago
They are correct
RV Mechanic: Michael Reush, RV Technician replied 1 year ago

Quite honestly I am somewhat baffled, the board is good, the heater is good the wire tests good to the eyebrow, and the eyebrow is working properly...........This points towards a bad circuit board......................

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Customer reply replied 1 year ago
That's been replaced.
Customer reply replied 1 year ago
I replaced it Friday, when I discovered the problem.
RV Mechanic: Michael Reush, RV Technician replied 1 year ago

I under stand, and saw that in your description, if all is correct from your end, the board is bad..............even new electronics can be bad, seen it many times.................

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