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Author Topic: Dometic fridge not working on AC power  (Read 2936 times)

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Offline Dammitjim

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Dometic fridge not working on AC power
« on: October 27, 2011, 07:05:06 PM »
I have a 2001 Bantam B19 with a refrigerator that isn't operating on AC power. It does work on AUTO by igniting the propane and functioning properly.
What's interesting is that when I bought it, it seemed to be working.
Also, the breaker box seems to be making a buzzing noise that I don't know if it's normal. Another thing is that the battery was registering 9V last night when I read it. So, I don't know if the converter might be giving me problems?
All I know is that I'm going camping tomorrow and I need to fridge to work
Any help would be appreciated!
2001 R-Vision Trail Lite Bantam B19
2005 Honda Odyssey EX-L

Offline Hacksaw

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Re: Dometic fridge not working on AC power
« Reply #1 on: October 27, 2011, 07:55:29 PM »
Does it cool on gas? Seems likely if it cools and gas,the convertor is buzzing,and the battery is no longer charging you may have a problem with that...
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Offline Dammitjim

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Re: Dometic fridge not working on AC power
« Reply #2 on: October 27, 2011, 08:25:13 PM »
Does it cool on gas? Seems likely if it cools and gas,the convertor is buzzing,and the battery is no longer charging you may have a problem with that...
Not sure I understand your statement? What is the source of the problem?
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Offline fmbhappycamper

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Re: Dometic fridge not working on AC power
« Reply #3 on: October 27, 2011, 08:38:42 PM »
Is your battery fully charged? [8D]
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Offline salsa

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Re: Dometic fridge not working on AC power
« Reply #4 on: October 27, 2011, 08:43:40 PM »
If it works on gas, then I would check it with the proper battery voltage. If that is fine, that would narrow things a bit. If it works otherwise but not on AC only, I would try connecting the fridge directly to a heavy extension cord to an outlet, not through the camper and see if that works. I had to rewire mine because the AC power in the camper was to small and would not allow proper voltage. By connecting it to larger gauge wire, it worked fine.
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Offline Dammitjim

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Re: Dometic fridge not working on AC power
« Reply #5 on: October 27, 2011, 10:57:45 PM »
Is your battery fully charged? [8D]

It was not! I am charging it now, but I'm confused as to why this isn't working even though I'm plugged into 110V. I would have thought the converter will supply the 12V to the fridge's controller and so on...
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Offline Unstable_Tripod

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Re: Dometic fridge not working on AC power
« Reply #6 on: October 27, 2011, 11:13:57 PM »
I agree with Salsa about trying it with the fridge plugged directly into an AC house outlet via an extension cord.  If it works that way you will know that the problem lies in the trailer, probably in the converter but maybe in the wiring from the converter to (and including) the AC outlet in the control center.  That converter should not be buzzing loudly.
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Offline robctry69

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Re: Dometic fridge not working on AC power
« Reply #7 on: October 28, 2011, 12:24:09 AM »
i dont think the converter will have anything to do with it not working on 110
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Offline Dammitjim

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Re: Dometic fridge not working on AC power
« Reply #8 on: October 28, 2011, 01:48:50 AM »
I'll give that a try tomorrow morning (using AC from the house directly on the fridge). I just tried hooking it back up with a fully charged battery and it was a no go.
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Offline Unstable_Tripod

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Re: Dometic fridge not working on AC power
« Reply #9 on: October 28, 2011, 02:17:58 AM »
robctry69, the converter is the "source" of the 110 AC for the fridge in the trailer.  External AC power comes into the PUP via the converter, which then sends it out into the various circuits.  The fridge's trailer outlet is on one of those circuits.  If the converter is fritzing up somehow it might be the cause of the problem.  Determining if the fridge will run when on a direct external AC line will provide valuable information.
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Offline PattieAM

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Re: Dometic fridge not working on AC power
« Reply #10 on: October 28, 2011, 06:59:11 AM »
You might want to check the outlet the fridge is plugged into - should be a GFI...which could have tripped.  You can also bypass the outlet via an extension cord to see if it's the fridge or circuit breakers of the camper. 

Offline Dammitjim

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Re: Dometic fridge not working on AC power
« Reply #11 on: October 31, 2011, 09:27:25 AM »
I measured 110V at the outlet where the fridge connects to, so I don't think there is a problem there unless the surge is too high and for some reason it can't handle it? I'm getting the feeling that the controller isn't "sensing" the AC power and that's why it's switching to gas automatically?
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Offline Unstable_Tripod

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Re: Dometic fridge not working on AC power
« Reply #12 on: October 31, 2011, 03:17:04 PM »
Surge?  These fridges do not have compressors (they work via gas absorption) so what surge do you mean?
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Offline Dammitjim

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Re: Dometic fridge not working on AC power
« Reply #13 on: October 31, 2011, 03:19:34 PM »
The power surge... like how much current it needs to run.
2001 R-Vision Trail Lite Bantam B19
2005 Honda Odyssey EX-L

Offline Unstable_Tripod

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Re: Dometic fridge not working on AC power
« Reply #14 on: October 31, 2011, 03:24:46 PM »
When the fridge runs on AC or DC power the electricity is just used to heat up an element inside, to cause the ammonia to go to the gaseous state.  There is no big starting "load" to cover like there is with the compressor in an air conditioner or regular fridge.
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