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Old 03-21-2019, 09:20 AM   #1
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Dometic fridge not cooling on DC or gas

So we started our trip and it seems the Dometic fridge in our 5.0TA doesn't cool in gas or DC mode. Not hooked up so can't tell if it works on AC now, but previously worked fine on AC. Our fridge is the larger one. Battery has been at 75% or so and I verified that when on gas the outside vent inside the compartment is hot. It's been about 24 hrs and still not very cool. I've been going between gas and DC and don't see any difference. Checked the manual and it's no help. Thanks.
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Old 03-21-2019, 10:45 AM   #2
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Originally Posted by jkordzi View Post
I verified that when on gas the outside vent inside the compartment is hot. It's been about 24 hrs and still not very cool. I've been going between gas and DC and don't see any difference.
There's hot and there's, ouch, hot. Seriously. The flame can be in pilot mode and the chimney will feel hot. But, by comparison, when in full heating mode, it makes the chimney uncomfortably hot to touch. Also, if you listen carefully, when it's heating correctly, you can hear the hiss of the flame.

If you don't think that you have a good size healthy flame one thing that you can do is check that the orifice isn't obstructed. Lots of youtube videos to show how.

An even quicker thing to do, and one that I had to do several times on my last trip to keep the fridge working, was just removing the test plug, letting the system pressure drop to zero and then the system fired up normally. I suspect in my case the gas valve was sticking.

Good luck.

Ron
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Old 03-21-2019, 12:15 PM   #3
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Originally Posted by Ron in BC View Post
There's hot and there's, ouch, hot. Seriously. The flame can be in pilot mode and the chimney will feel hot. But, by comparison, when in full heating mode, it makes the chimney uncomfortably hot to touch. Also, if you listen carefully, when it's heating correctly, you can hear the hiss of the flame.

If you don't think that you have a good size healthy flame one thing that you can do is check that the orifice isn't obstructed. Lots of youtube videos to show how.

An even quicker thing to do, and one that I had to do several times on my last trip to keep the fridge working, was just removing the test plug, letting the system pressure drop to zero and then the system fired up normally. I suspect in my case the gas valve was sticking.

Good luck.

Ron
I'll second the "hot & ouch hot". At Quartzsite a couple years back a 21 had problems running on gas. The chimney felt hot enough, but I took an infrared thermometer and compared it to mine (same model) and mine was quite a bit hotter. After a cleaning of the gas nozzle, the refrigerator was back to normal.
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Old 03-21-2019, 01:51 PM   #4
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Thanks for the replies. I do remember hearing the hissing sound of the gas up the chimney but I will check to see if the orifice was plugged once we get settled. Any ideas why it wasn't working on DC very well?
I
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Old 03-21-2019, 01:59 PM   #5
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Fridge doesn't work well on DC in any case. I plug mine in to AC a couple days prior to leaving. Propane seems to cool quicker. And, use a remote thermometer so that you're not opening the door and spilling cold to check the temp.
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