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DHart's avatar
DHart
Explorer
Aug 10, 2015

Please help me get new fridge cooling better...

We just picked up our 2016 30' Airstream Serenity with 8 cu ft Dometic Gas/AC fridge.



The coach is parked outside our home while I am doing the test of the new fridge operation.

Here is the scenario:

-Outside temp is around 100 degrees daytime, down to 85 or so at night.
-Temp in the parked trailer (all windows open) is around 100 degrees daytime, 85 night tme.
-Fridge is empty
-Cooling setting is on HIGH (Coldest)

Empty fridge has been running on GAS, on HIGH, for 24 hours. Freezer temp is 16 degrees. Seems good to me! Fridge temp is 45 degrees in mid morning. Not so great.

So, early afternoon I switched over to running it on AC. Now, freezer temp is still 16 degrees, but fridge is at 52 degrees. (During the afternoon, the dropping sun has been beating on the fridge side of the trailer.)

The fridge side of the trailer is facing west, with hot western sun hitting that side of the coach all afternoon.

Obviously, we are not occupying the trailer. It is parked beside the house. And the heat of the environment and temps inside the trailer cannot be helping the fridge do its job at all. And the fact that the fridge is empty... may be a factor as well?

Considering all this, does it sound like our fridge is doing its job as best as can be expected, or should it be cooling the refrigerator section a LOT better than it is?

Freezer performance looks great. Fridge performance is really causing us some concern, but we're not sure how much the environmental factors are influencing the performance.

What should/can I do to improve the cooling of the fridge. Would just filling the fridge with pre-cooled stuff and running the AC in the coach to lower the inside temps in the coach make all the difference to bring the fridge temp down to mid 30's?
  • Pretty hot temps where you are. I would add a 12v fan to your fridge vent stack. RV dealers sell them or just use a 12v muffin fan in the stack. Cooling the inside of the TT down would help some. I've camped in the CA & AZ desert for a lot of years. It is a problem. Years ago dry camping in the summer desert with my TC I had to add 2 stack fans. Check out the 12v computer muffin fans.
  • Ivylog's avatar
    Ivylog
    Explorer III
    OP, you need to decrease the width of your picture to 600.

    Normally I'd recommend that you replace the roof vent with a solar powered one BUT not on one that looks that nice. You need to increase the airflow over the coils on the rear. On my 31' there is too big a gap between the coils and the inside wall BUT I'm not in an area that HOT so mine works OK. If there is more than a 1" gap to the wall, a baffle needs to be added Plus 12V computer fans need to be added at the top and bottom to increase the air flow. You could power it with something like this mounted on your roof behind the vent and out of site.
    The freezer sections needs to be close to 0 before the refer section will get cold enough.

    I would find the Dometic installation instructions which will have info on how big a gap and if it's more than that, I'd make Airstream install your refer properly. I think you will find a big gap at the bottom, getting a little better at the top of the coils.



  • An empty fridge is very hard to measure, I would put a couple of gallons of water in it, at least , and put a thermometer in a glass of water to see what it is actually doing.
    That said, 16 is not good in the freezer, either, it should be zero, and the fresh food should be in the 30's.

    BTW, very nice rig!

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