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Old 01-09-2017, 04:47 PM   #1
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Dometic DM2862 not getting cold on AC/Propane

I have a Dometic DM2862. Fridge stopped working after I went out of town and we got a couple of feet of snow, which covered the vent and then temp dropped to -25 degrees. I have since shoveled the roof off. We are now 40 degrees. Crazy went from 32 to -25 then to 40 degrees all in about a week. I have gone through the service manual and checked everything that I could. Here are my results:
AC voltage 122.8,
Heating Element 43 ohms,
DC voltage 29.3 AC and 13.65 DC. Said normal should be 6v AC. Don't know how to pin point issue.....ideas??
Thermistor 8.87 on 20K. Sat in ice water for over 10 minutes.
Solenoid Valve 43.1 ohms
Upper circuit board 12.45 between orange and red wire
Lower circuit board (non-cooling mode) 12.45 orange and red wire, J4-J10 12.84v
(cooling mode) J4-Ground 13.52v, J5-J6 120.7v, J7-J8 122.7V
Thermofuse has continuity also .2ohms
Any help would be appreciated. Sucks not having a fridge when you live in your trailer.
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Old 01-09-2017, 05:11 PM   #2
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I left the fridge on while doing some of the checks. I felt the heating element flume and it was warm. The cooling unit part was cold. Hope this helps with helping me find my problem. Thinking my cooling unit might be bad.
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Old 01-09-2017, 05:20 PM   #3
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I would agree with the cooling unit, probably overheated with no air movement. Do you see any yellow powder on the cooling coils or smell ammonia in the compartment? That was how I found that our Dometic was bad.
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Old 01-09-2017, 06:32 PM   #4
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Did not smell any ammonia or see anything yellowish. Just dust but will take a closer look at it when I head back out.
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Old 01-18-2017, 05:32 AM   #5
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Have you found out what caused your problem? I have the same issue as you.

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