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Old 08-10-2015, 08:08 AM   #15
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1995 25' Excella
xxxxx , xxxxxx
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Yesterday was about 85. The trailer was in full sun.....The hottest I have checked it in was about 95 outside and no ac running. It was still under 35 degrees in mid day.

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Old 08-10-2015, 01:25 PM   #16
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2014 25' FB Eddie Bauer
Vero Beach , Florida
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Sounds about normal. Two things influence our performance more than others: 1. Direct sun on the fridge side of the trailer and 2. Outside temperature.

On hot days traveling west (with the sun in the southern sky and therefore on the street side of the trailer where our fridge is located) and temps above 80 we gain temp in the fridge through the daylight hours. We run with propane on. At night we come back to low 30s in the fridge.

I generally put several plastic zip lock bags of ice cubes in the freezer overnight and move them to the fridge on days when I know we can't count on the Dometic to keep its cool. I move them back to the freezer at night and start over the next day.

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Old 08-10-2015, 02:35 PM   #17
2011 34' Classic
Eastlake , Colorado
Join Date: May 2015
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We met a couple in a my while camping and he had a pretty good idea to help keep the fridge cooler when camping. He went to lowes and bought a 4x8 sheet of 1/2 inch insulation board and cut it out to the fridge dimensions and velco's it to the outside of the trailer and he claimed it keeps his fridge 4-5 degrees cooler.
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Old 08-10-2015, 02:37 PM   #18
2011 34' Classic
Eastlake , Colorado
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Oh yeah, he takes it off and stores inside trailer while traveling. Doesn't help with cooling while traveling though.
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Old 08-10-2015, 03:23 PM   #19
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2012 25' FB Flying Cloud
Celina , Ohio
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Originally Posted by dznf0g View Post
It was actually one repair and some mods:

Cooling unit went bad and I replaced with one from They claim, (and I can see) better performance from re-routing some of the tubing on the cooling unit. They also claim a bit different Chemistry.

I addition:
1) three 120mm fans mounted just inside the top refer vent pulling air out of the back compartment
2) one 200mm fan mounted behind the lower access door pushing air in and up.
3) All fans controlled by a thermal switch. On and off at about 75* ambient temp.
4) Moved the thermistor down to the shelf with the plastic 4" X 4" tray in it; on the far right side, tip pointed toward door. (I never understood why it is mounted on the fins...turns the fridge on and off too frequently, IMO, on ALL fridges I have owned)
5) Interior twin 2" fans for the fin area from

I mount my remote temp sensor right below the drain pan for the fins...if I don't, I freeze everything in the back of the fridge.

When the outside temps are 90* and A/C is at 72*, the fridge (loaded) is at 34* (off) and 36* (on) in the fridge, and -2* (on) and -4* (off). That is on setting #3 of 5 for my model.

I had similar results on my old SOB, but some of the mods weren't available/known to me with that trailer.

I just ordered the inside fan unit, how do I remove the light to hook up.

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Old 08-10-2015, 03:27 PM   #20
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2007 28' Classic
Ivanhoe , Virginia
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We have had good luck with Norcold and not-so-good with Dometic refrigerators. Is Dometic all that Airstream uses?
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Old 08-10-2015, 03:54 PM   #21
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Someone said...

" some put a few milk cartons of ice in the freezer to help stability if there is not much else in there."

Be careful if you are using actual milk cartons. The government advises against using milk cartons for water storage. They said it is basically impossible to clean the milk off of the plastic or wax, and you can end up with a fuzzy science project if the cartons get to room temps for a long time.
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Old 08-10-2015, 04:22 PM   #22
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2007 22' International CCD
Corona , California
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Ooooh! Science!

Yeah, really had it happen one time. I use the containers designed for ice, or some sealed pillow-like gizmos that have water in them designed for cooling lunch boxes. Freeze them over and over again, and unless they leak, no issues with fuzzy stuff growing.

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Old 08-10-2015, 04:53 PM   #23
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1994 30' Excella
Mississauga , Ontario
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I think the reusable freezer paks with a blue gel in them actually work better than plain ice.
putting ice packs in the fridge is a good idea that I hadn't thought of. Going to try it.
Al and Jean

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Old 08-10-2015, 05:30 PM   #24
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2014 27' FB International
Okanagan Falls , British Columbia
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I was having a similar situation in my 2014 International Stirling. At ambient temperatures in the 100 degree range I was seeing fridge temperatures in the high 40's to mid 50's. Recently the thermos switch came loose from where it was situated from the factory so I located it on the fins (as has been suggested on this forum) and saw my highest temperatures to date. Then I moved the switch down to the drain tray and within a couple of hours the fridge was down to 35 degrees on setting number 5. So you may want to play with where the switch is located? Seems to have done the trick for me.
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Old 08-10-2015, 05:45 PM   #25
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2016 30' Flying Cloud
Blenheim Ontario , Ontario
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Originally Posted by DHart View Post
We just picked up our 2016 30' Serenity.

I'm doing a test of the fridge right now and not sure if I am seeing what I should see in terms of fridge cooling performance.

Here is the scenario:

-Outside temp is around 100 degrees.
-Temp in the parked trailer (all windows open) is around 100 degrees.
-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. Not so great.

So, about 6 hours ago 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 late day 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.
Hey, enjoy what you have. Look at the environment that it has to deal with! Remember that an absorption fridge has no moving parts, and relies on differentials of fluids.
Not much differential, not much cooling.
I'd say it's working at it's max.
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Old 08-10-2015, 06:09 PM   #26
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Durango , Colorado
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It sounds fine to me. It is really hard to cool in hot weather with an empty fridge.

If you fill it, the temp will go down some. Also side awnings and shade on the fridge side makes a huge difference.

I don't think you have anything to worry about.
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Old 08-10-2015, 10:20 PM   #27
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1966 24' Tradewind
1995 34' Excella
Lynchburg , Virginia
Join Date: Sep 2009
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I think your fridge is operating about normal. However I think this performance is not acceptable considering your warm environment.

To deal with your high temperatures I believe you will need to install some computer fans just under the roof vent to improve the heat transfer. Without fans you only have natural convection. With fans you will have forced convection.

I have ordered four 90mm computer fans from Amazon for less than $40.

We also put a one gallon frozen water container in the fridge to help in the cooling and we put frozen water bottles in the freezer or fridge as need be. As another said you can move them to the freezer at night so they will refreeze and them put them in the fridge during the daytime.

Parking in the shade also helps. We always try to point the Airstream north; our fridge is on the curb side.

I monitor fridge temperature with a remote thermometer from Walmart- the best $10 I have ever spent.

new fridge or old fridge, I don't think it makes much difference.

Good luck, Dan
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Old 08-11-2015, 10:04 AM   #28
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2001 27' Safari
Bella Vista , Arkansas
Join Date: Oct 2004
Posts: 68
All the suggestions sound great. I purchased an office desk fan, about 6" dia, 110VAC from Wally World for about $10. I installed it on the floor of the back side of the refer, rotated it upward, plugged it in the duplex receptacle, and turned it on.
If you want to leave it in place while traveling, I took a fender washer, overlaid it over the wire fan base and screwed it down holding the fan in place.
It worked for me.

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