|
05-16-2014, 06:34 PM
|
#1
|
Member
Join Date: Sep 2010
Posts: 86
|
Reefer ills
Hi All,
Have a dometic refrig. problem that I know someone will have a answer for...(I hope)..
Seems our Dometic on our 2011 sabre freezes real well, will go down to 2 degrees, but refer section only 40 42. So, here's what I've done so far. Disconnect the thermister, refer drops to 29f. Bought a snip the tip thermister thinking the old one didn't ohm out well. No change, 42f.Currently running on electric, did not try gas yet, but seems ok since I did remove the thermister plug off the board and the temp dropped. Installed a pair of fans on the reefer fins,last season, no change. Installed a fan in the back of the unit to bring ambient air into the unit, no change.Did the dollar bill thing on the door gasket, o.k. Now wondering if there is some sort of default temp built in on the board? Going to run it on gas tomorrow and see how it does. Problem is 42 isnt low enough when we go down south, open the door a couple of times, the temp will soar up to 48 50. The ambient up here in new jersey has been around 70 so should be cooling well and the trailer is level.
ANY SUGGESTIONS??
Thanks,
Dave and Rainy
|
|
|
05-20-2014, 01:12 PM
|
#2
|
Member
Join Date: Mar 2013
Posts: 40
|
Have you slid the thermistor up the fin toward the freezer as far as it will go and checked the cooling temp?
|
|
|
05-20-2014, 01:18 PM
|
#3
|
Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
|
Quote:
Originally Posted by CityMan
Have you slid the thermistor up the fin toward the freezer as far as it will go and checked the cooling temp?
|
He's removed the thermistor and replaced with "snip the tip"
http://snip-the-tip.com/cgi-bin/articca.cgi
TURBS
"Sabre owners united"
|
|
|
05-21-2014, 09:59 AM
|
#4
|
Member
Join Date: Mar 2013
Posts: 40
|
Sorry I did not know what snip the tip was!
|
|
|
05-21-2014, 10:16 AM
|
#5
|
Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
|
Quote:
Originally Posted by CityMan
Sorry I did not know what snip the tip was!
|
I bet you do now! Lol
TURBS
"Sabre owners united"
|
|
|
05-21-2014, 04:29 PM
|
#6
|
Senior Member
Join Date: Apr 2008
Posts: 126
|
Perhaps Daverain would prefer to speak for himself...
__________________
2009 Rockwood 2701SS
2008 Tundra Crewmax 5.7
|
|
|
05-21-2014, 04:49 PM
|
#7
|
Senior Member
Join Date: Dec 2011
Posts: 3,570
|
Quote:
Originally Posted by daverain
Hi All,
Have a dometic refrig. problem that I know someone will have a answer for...(I hope)..
Seems our Dometic on our 2011 sabre freezes real well, will go down to 2 degrees, but refer section only 40 42. So, here's what I've done so far. Disconnect the thermister, refer drops to 29f. Bought a snip the tip thermister thinking the old one didn't ohm out well. No change, 42f.Currently running on electric, did not try gas yet, but seems ok since I did remove the thermister plug off the board and the temp dropped. Installed a pair of fans on the reefer fins,last season, no change. Installed a fan in the back of the unit to bring ambient air into the unit, no change.Did the dollar bill thing on the door gasket, o.k. Now wondering if there is some sort of default temp built in on the board? Going to run it on gas tomorrow and see how it does. Problem is 42 isnt low enough when we go down south, open the door a couple of times, the temp will soar up to 48 50. The ambient up here in new jersey has been around 70 so should be cooling well and the trailer is level.
ANY SUGGESTIONS??
Thanks,
Dave and Rainy
|
Easy one, you have poor door gasket on the frig box. That would be together with a lot of frost build up.
Worse is really sounds like a partially plugged tubing feeding refrigerant to the refrig section. Freezer getting plenty of refrigerant, main box not so much. I've seen where the coils (black tubing in the back) are gently tapped
and free up the sentiment trapped in the small diameter tubing. Free and worth a try. Look for the lower set of tubing feeding the frig vs the upper set serving the freezer.
|
|
|
05-21-2014, 05:07 PM
|
#8
|
Senior Member
Join Date: Oct 2013
Posts: 1,443
|
what is the proper temp in the freezer ? and the refer? My wife claims refer doesn't seem cold enough yet it has a temp of 40 deg and freezer is 32 deg.
__________________
Think about things before you do them make life easier not harder.
|
|
|
05-21-2014, 05:25 PM
|
#9
|
Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
|
TURBS
"Sabre owners united"
|
|
|
05-21-2014, 05:33 PM
|
#10
|
Phat Phrog Stunt Team
Join Date: Apr 2012
Location: Tipp City, OH
Posts: 7,154
|
Quote:
Originally Posted by bob7794
Perhaps Daverain would prefer to speak for himself...
|
You lost me on this comment....
__________________
2016 Georgetown 364TS
2017 Jeep Rubicon Recon toad
Nights Camped 2019 - 17
|
|
|
05-21-2014, 06:26 PM
|
#11
|
Senior Member
Join Date: Dec 2011
Posts: 3,570
|
Quote:
Originally Posted by mark0224
what is the proper temp in the freezer ? and the refer? My wife claims refer doesn't seem cold enough yet it has a temp of 40 deg and freezer is 32 deg.
|
Here ya go "
The ideal freezer temperature is 0 Fahrenheit (-18 Celsius) for storing food. And -10 Fahrenheit (-23 Celsius) is recommended when freezing food.
For every five degrees Fahrenheit above zero, the recommended storage time is cut in half. Food stored above 0 Fahrenheit loses more nutrients and loses quality faster than properly frozen food.
The faster food freezes the smaller the ice crystals. The smaller the ice crystals the smaller the change in texture and better quality when thawed."
Meanwhile the reefer box should be held around 34F if possible.
|
|
|
05-21-2014, 08:24 PM
|
#12
|
Member
Join Date: Sep 2010
Posts: 86
|
I find the tube being partially clogged a interesting problem in itself. . Also I have done a dollar bill check the gasket thing, it's o.k. I'm a hvacr licensed tech. but ammonia systems intrigue? me, if that's the right word? SOOOO... anyway, I ran it on gas...now at -2 freezer, 36 fridge... with thermister hooked up. I guess the electric elements weak?
Dave
|
|
|
05-21-2014, 10:03 PM
|
#13
|
Senior Member
Join Date: Dec 2011
Posts: 3,570
|
Quote:
Originally Posted by daverain
I find the tube being partially clogged a interesting problem in itself. . Also I have done a dollar bill check the gasket thing, it's o.k. I'm a hvacr licensed tech. but ammonia systems intrigue? me, if that's the right word? SOOOO... anyway, I ran it on gas...now at -2 freezer, 36 fridge... with thermister hooked up. I guess the electric elements weak?
Dave
|
I've never heard of a partially failed calrod but maybe. Certainly the gas has much more "power". I attach a very good primer on Ammonia system. Basically it uses a small flame for heat compared to the heat of compression real reefers use. You'll have a much better understanding of these systems. Written years ago by Dometic for aid in trouble shooting their systems. I think Fred Flintstone had something to do with Ammonia development. Hope its useful to you. They may even discuss how the tubing can plug with rust and components of refrigerant break down.
|
|
|
05-29-2014, 06:16 PM
|
#14
|
Member
Join Date: Sep 2010
Posts: 86
|
Well, changed out the element and all is well. temps are down ehere they belong, actually same gas or electric. Thanks for the education on ammonia systems, simplicity at it's best. Sure different than dealing with seer18 a/c!
Dave
|
|
|
|
Thread Tools |
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|