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Old 07-10-2020, 03:36 PM   #1
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Dometic Fridge Builds Ice In Freezer

Greetings all. Have a 2017 OM TT, with Dometic fridge. We came back from vacation 3 weeks ago and after unloading trailer noticed the fins in fridge and the freezer compartment all iced up. I let thaw out overnight, wiped down and turned back on. Went out this morning and freezer back wall is building up ice again. The fins in fridge had drops of water on them also. Fridge has not been opened since I thawed and wiped out. Has anyone else had this issue? Would the seals be flattened out and need replacing? Thoughts from fellow rv'ers. Stay safe and happy rving.
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Old 07-10-2020, 04:00 PM   #2
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Sounds normal. Every RV I have ever owned did that.
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Old 07-10-2020, 04:03 PM   #3
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This is a normal occurrence, Hot goes to cold ! These units aren't like home units that have defrost cycles and timers, You can check your gaskets by seeing if any section isn't flush when closed, Put a dollar bill in the door, close the door on it and see if it falls out .
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Old 07-10-2020, 04:28 PM   #4
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Ours does this all the time and we camp 6 mos at a time. Once in awhile we unload the fridge and freezer into the sink and use DW's hairdryer to defrost the fins and the freezer. Maybe do this every other month or so.
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Old 07-12-2020, 10:27 AM   #5
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Quote:
Originally Posted by cboss View Post
Ours does this all the time and we camp 6 mos at a time. Once in awhile we unload the fridge and freezer into the sink and use DW's hairdryer to defrost the fins and the freezer. Maybe do this every other month or so.
We do the exact same thing! It has to do with humidity, we 6 months in Florida. This year we did not have to do that task, I honestly don't know why. I did buy one of those little blue cube fans to put in fridge at CW. Don't know if that helped but it won't hurt.
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Old 07-12-2020, 11:16 AM   #6
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Originally Posted by Sunseeker16 View Post
Sounds normal. Every RV I have ever owned did that.
X2. OP did not list model of of the Dometic fridge, but I might ask how far in or out of the coils is the thermostat set at. Makes a difference. I've had to experiment with different positions on the coils with a thermometer to find the sweet spot for the fridge and freezer. Finally got the fridge to 38°F and the freezer to 0°F. Some ice in freezer, but none in the fridge.
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Old 07-12-2020, 11:45 AM   #7
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Fridge fan may help.
https://jc-refrigeration.com/product...an-23-a-12v-u/
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Old 07-12-2020, 02:42 PM   #8
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Originally Posted by nikita View Post
We do the exact same thing! It has to do with humidity, we 6 months in Florida. This year we did not have to do that task, I honestly don't know why. I did buy one of those little blue cube fans to put in fridge at CW. Don't know if that helped but it won't hurt.
Definitely a humidity issue. What I've found is that door seals often have small gaps that allow outside air to infiltrate and bring more humidity into the freezer. Another source if from food itself.

If food is sealed well in either manufacturer's container or in ziplock bags, etc, one source of humidity is under control. Would be a good idea to check door seals. If there is a "fan shaped buildup of frost next to where the door seal seats, that is where the air is leaking. Could be warped material at freezer opening. Sometimes a layer or two of paper towel strip inserted behind the door seal in this area helps force the seal tighter in this area.

I've found that ice buildup in my freezer has been minimized once I started the habit of firmly pushing the door closed after accessing the freezer. Just closing it until the latch "clicked" didn't seem to be enough. I now close, click, push, then go about my other tasks.
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