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Old 09-14-2017, 07:43 AM   #1
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Refrigerator works on gas but not electric?

Just purchased a new to me 2010 Rockwood Roo. It has a Dometic refrigerator that I've been trying to cool off for the first time. When switched to auto the gas fires up even though I'm hooked up to electric. Any ideas?
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Old 09-14-2017, 07:51 AM   #2
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First things to check are the basics... is the refrigerator plugged in?
Is the breaker for that circuit on?
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Old 09-14-2017, 08:02 AM   #3
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Refrigerator works on gas but not electric?

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First things to check are the basics... is the refrigerator plugged in?
Is the breaker for that circuit on?


I checked on the outside and it's plugged in at the access door. The breakers are all on too. There are small fuses to the right of the breakers and one 15 amp fuse is marked refer/furn that I'm assuming is for the interior light and it's good. I even flipped the breaker to make sure.
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Old 09-14-2017, 08:23 AM   #4
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Next is to actually check for power at the refrigerator outlet.
This can be done with a multimeter or with something as simple as plugging a nightlight into the outlet to check for power.
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Old 09-14-2017, 08:30 AM   #5
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Refrigerator works on gas but not electric?

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Next is to actually check for power at the refrigerator outlet.
This can be done with a multimeter or with something as simple as plugging a nightlight into the outlet to check for power.


Checked power and it's good. I also checked the fuses in the access hatch. Both look good. It fired up on propane when I unplugged it but haven't heard it fire up in the few minutes since I took out the fuses and replaced them. Not sure how often it cycles. The freezer is already cold but that was all on propane. Click image for larger version

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Old 09-14-2017, 08:41 AM   #6
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just looking at your pictures I see a black and white wire going to the control board labelled what appears to be 'ac hot line' and 'ac neutral line'. can you measure them to see if you have 110 volt power there. also, there is a small electrical heater element that produces heat when on 110 volt power. is it possible to measure voltage at its terminals to see if it has power. could it be burnt out?
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Old 09-14-2017, 09:05 AM   #7
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Can you force it to electric by shutting the gas off?
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Old 09-14-2017, 10:32 AM   #8
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Quote:
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just looking at your pictures I see a black and white wire going to the control board labelled what appears to be 'ac hot line' and 'ac neutral line'. can you measure them to see if you have 110 volt power there. also, there is a small electrical heater element that produces heat when on 110 volt power. is it possible to measure voltage at its terminals to see if it has power. could it be burnt out?


Good idea but I'll have to wait until I get my meter back (husband has it). I see the hot and neutral but Where is the small electrical heater you mentioned above?
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Old 09-14-2017, 10:33 AM   #9
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Can you force it to electric by shutting the gas off?


I'll try that now. Now that I know the propane portion works well.
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Old 09-14-2017, 10:52 AM   #10
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You said you checked the fuses and both 'looked' good.
Check them with a meter.

I had one on my latest refrigerator that 'looked' good but in fact, wasn't.
It had got hot in the fuse holder (because of a poor fit... see how the upper prongs are spread much wider in one of your photos where the fuse goes and appear to be somewhat discolored?... Poor fit) and when it got warm enough from the resistance, it melted the solder inside that connected the wire to the cap creating an open.
It looked perfectly fine.

If you are able to read a schematic, there are many wiring diagrams/troubleshooting guides available for all the different model numbers on the 'net. It will show you exactly where to test and what to check for.

You didn't post the model number of your unit or I would have provided a link.
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