Dometic RM8555 fridge not cooling on propane - Escape Trailer Owners Community

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Old 08-11-2018, 09:41 PM   #1
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Dometic RM8555 fridge not cooling on propane

My fridge modes RM8555 is not cooling on propane. It works great on power. The jet and burner have been cleaned. Any suggestions?
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Old 08-12-2018, 04:57 AM   #2
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It's not cooling at all, or just not enough? You mention the burner was cleaned, can you verify,maybe post a picture, of the flame?
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Old 08-12-2018, 06:50 AM   #3
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Yes, please remove the guard around the burner and confirm the burner is lighting. You should have a healthy blue flame. That will tell us a lot.

Also keep in mind that the freezer always gets cold first and it can sometimes take up to 12 hours (this may vary by model and circumstances) to get the fridge section down to desired temperature.
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Old 08-12-2018, 09:41 AM   #4
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It is not cooling enough. I did pull out the freezer yesterday and it cooled much better. The flame is a nice blue flame
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Old 08-12-2018, 10:04 AM   #5
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Check the propane pressure right at the fridge test port with a manometer. I’ve done two fridges recently and they had low pressure (even though the flame looks nice to the naked eye). With 50% of trailer appliance btu’s running the fridge pressure should not drop below 11” water column. This typically means the fridge will be 11.5-12” w.c. with no other propane loads operating. The regulator up at the tanks has an adjustment under the large black screw cap. Turning it clockwise raises the pressure. Once I did this our fridge has worked amazingly well.
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