Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-09-2015, 08:42 PM   #1
Rivet Master
 
2016 30' International
Scottsdale , Arizona
Join Date: Jul 2010
Posts: 723
What cooling should I expect from a new fridge?

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.
__________________

__________________
DHart is offline   Reply With Quote
Old 08-09-2015, 08:59 PM   #2
Rivet Master
 
AWCHIEF's Avatar
 
2006 23' Safari SE
Biloxi , Mississippi
Join Date: Nov 2011
Posts: 8,138
Images: 33
Inefficient RV systems will only cool so much. Sounds like you have reached that point. People expect too much from RV fridges and air conditioning systems. .
__________________

__________________
MICHAEL

Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
AWCHIEF is offline   Reply With Quote
Old 08-09-2015, 09:07 PM   #3
4 Rivet Member
 
1994 34' Excella
Warren , Manitoba
Join Date: Apr 2006
Posts: 346
I bought one of the inexpensive battery operated fridge fans to move the air in the fridge. Does help to keep things cooler and the batteries last about a month. Well worth the investment. Chris
__________________
WBCCI #7394
2002 Chev 2500 HD Duramax
1976 31' Gone but fondly remembered
CBWELL is offline   Reply With Quote
Old 08-09-2015, 09:14 PM   #4
Sbb
begorragirl
 
Sbb's Avatar
 
2017 25' Flying Cloud
Denville , New Jersey
Join Date: Oct 2012
Posts: 1,029
Images: 2
Is you fin slid all the way up? You r right, 45 will not keep food at safe temp for consuming. Talk to dealer.
__________________
2006 Bambi CCD ("EireStream!!")
2010 Funfinder
2005 T@B
2001 Teardrop, Mountain Hardware Tent
For some perfection takes a little longer...
Sbb is offline   Reply With Quote
Old 08-09-2015, 09:23 PM   #5
Rivet Master
 
mandolindave's Avatar
 
Join Date: Jan 2004
Posts: 2,116
Images: 4
DHart

Your fridge is doing OK. A little colder would be a little better. Being empty does make a huge difference. It being 100 degrees doesn't help. Your fridge is 45 degrees. That's 55 degrees colder than the temps outside. 10 more degrees and your milk and eggs would be close to freezing.

As far as giving it 24 hours, that's not too far off normal. People put cold drinks in their fridge to speed up the process. I put frozen water bottles in mine.

Once I get my fridge up to speed, in about 80 degree weather, it will freeze milk set on 3 ( about half way )
__________________
mandolindave is offline   Reply With Quote
Old 08-09-2015, 09:23 PM   #6
Rivet Master
 
2016 30' International
Scottsdale , Arizona
Join Date: Jul 2010
Posts: 723
Yes, I do plan to talk with the dealer tomorrow. I was just wondering how well the fridges in other folks Airstreams are cooling.

I'm sure the 100 degree temp in the coach is playing some part in the situation. And the fact that the fridge is totally empty. But hoping that I can expect a little more from the Dometic.
__________________
DHart is offline   Reply With Quote
Old 08-09-2015, 09:29 PM   #7
Full Time Adventurer
 
BoldAdventure's Avatar
 
2007 27' International CCD FB
Nomadic , USA
Join Date: Jul 2013
Posts: 2,743
That's actually about normal cooling. I thought the best it could do was 30 less than ambient temp. And you're right, 100 degrees doesn't help. The hotter it is, the more it struggles.
__________________
Family of 4 living, working & exploring the USA in our Airstream.
OUR BLOG | FACEBOOK | INSTAGRAM
BoldAdventure is offline   Reply With Quote
Old 08-09-2015, 09:32 PM   #8
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,411
Images: 5
After mods, with 100* and empty, I can get fridge to 38* and freezer to 2*.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is online now   Reply With Quote
Old 08-09-2015, 09:35 PM   #9
Rivet Master
 
AWCHIEF's Avatar
 
2006 23' Safari SE
Biloxi , Mississippi
Join Date: Nov 2011
Posts: 8,138
Images: 33
Quote:
Originally Posted by dznf0g View Post
After mods, with 100* and empty, I can get fridge to 38* and freezer to 2*.

What mods?
__________________
MICHAEL

Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
AWCHIEF is offline   Reply With Quote
Old 08-10-2015, 03:13 AM   #10
Rivet Master
 
2016 30' International
Scottsdale , Arizona
Join Date: Jul 2010
Posts: 723
Quote:
Originally Posted by dznf0g View Post
After mods, with 100* and empty, I can get fridge to 38* and freezer to 2*.
Yes, please share the mods. My wife and I have to get this ice box working better!
__________________
DHart is offline   Reply With Quote
Old 08-10-2015, 07:29 AM   #11
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,411
Images: 5
It was actually one repair and some mods:

Cooling unit went bad and I replaced with one from rvcoolingunit.com. 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 RVcoolinunit.com

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.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is online now   Reply With Quote
Old 08-10-2015, 08:18 AM   #12
Rivet Master
 
dkottum's Avatar
 
2012 25' Flying Cloud
Battle Lake , Minnesota
Join Date: Jun 2009
Posts: 7,716
Parking direction to the sun is important. In hot weather with the fridge side facing the sun we have had results similar to you. In these conditions I try to park the fridge side northerly, and to deploy the streetside awning to keep the area in the shade.

Our model has upper and lower fridge vent doors with a fan in the upper compartment. This helps moving air. I also prop open the upper and sometimes both vent doors to increase air flow.

The effort should be to keep the fridge compartment and airstream interior cool as possible. A well-stocked fridge and freezer will help stabilize fridge temps, some put a few milk cartons of ice in the freezer to help stability if there is not much else in there.

I think your fridge is operating normally in those conditions.
__________________
Doug and Cheryl
2012 FC RB, Michelin 16, ProPride 1400
2016 Ram 1500 Laramie Crew Cab 4X4 Ecodiesel 3.92 axles

The Truth is More Important Than the Facts
dkottum is offline   Reply With Quote
Old 08-10-2015, 09:02 AM   #13
CRH
Rivet Master
 
1995 25' Excella
xxxxx , xxxxxx
Join Date: Apr 2015
Posts: 1,246
I have done no mods to my 20 year old fridge. With the AC off and it 80+ degress in the trailer, my fridge is between 32 and 34 on the top shelf on setting #5....I confirmed this yesterday because I turned it on the day before and loaded it for a trip today.
__________________
CRH is offline   Reply With Quote
Old 08-10-2015, 09:05 AM   #14
Rivet Master
 
AWCHIEF's Avatar
 
2006 23' Safari SE
Biloxi , Mississippi
Join Date: Nov 2011
Posts: 8,138
Images: 33
Quote:
Originally Posted by CRH View Post
I have done no mods to my 20 year old fridge. With the AC off and it 80+ degress in the trailer, my fridge is between 32 and 34 on the top shelf on setting #5....I confirmed this yesterday because I turned it on the day before and loaded it for a trip today.

What is the outside ambient temp?
__________________

__________________
MICHAEL

Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
AWCHIEF is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How long should it take to start cooling? Roothawg Refrigerators 25 06-21-2013 06:35 PM
Electrical probs w electrical to new fridge cooling unit. Surfairstrea Batteries, Univolts, Converters & Inverters 2 05-23-2012 08:24 PM
What should I expect to pay for new brakes and tires Mary Burris Wheels, Hubs & Bearings 2 05-22-2012 07:59 PM
Should I expect some rattling from my Interstate? rv40 Sprinter and B-van Forum 12 03-18-2010 09:35 PM
Fridge Cooling Problems 68International Refrigerators 6 07-10-2002 04:53 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:56 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.