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09-16-2024, 03:13 PM
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#1
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Member
Join Date: May 2018
Location: Coburg, Oregon
Posts: 50
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Fridge temps
 My dometic fridge will only go as low as 45 degrees, since the temperatures
are pre set how do I get a lower temp? Why would this fridge have a thermistor
if the temperatures are preset. And it does not work, moved it many times no change.
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2004 Gulf Stream Ultra Super C
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09-16-2024, 03:20 PM
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#2
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Senior Member
Country Coach Owners Club
Join Date: Dec 2010
Posts: 8,233
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My Dometic had a thermister on the rear fins. You raise or lower it depending on which way you need to adjust the temperature. Also, when was the last time you defrosted it. Ice can build up behind the rear wall of the freezer and needs a serious defrost.
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Don
2002 Country Coach Intrigue
#11427
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09-16-2024, 04:15 PM
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#3
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Member
Join Date: May 2018
Location: Coburg, Oregon
Posts: 50
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Thanks for the reply Don. It has been defrosted a few weeks ago, I have moved the thermister all over the place on the fins. Can I splice a new thermister on the wire ?
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2004 Gulf Stream Ultra Super C
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09-16-2024, 04:30 PM
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#4
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Senior Member
Join Date: Oct 2014
Posts: 8,845
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You must be in a DRY climate if defrosting every few weeks works for you.
And, move the thermister to the upper end of the last fin to get it to go colder (thermister in warmer location).
Also, consider a small battery-powered fan to circulate air in the refrigerator.
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Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
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09-16-2024, 05:39 PM
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#5
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Senior Member
Join Date: Apr 2004
Posts: 4,000
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Quote:
Originally Posted by smithd7
...... Can I splice a new thermister on the wire ?
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Yes. Google "Snip The Tip" for an easy thermister replacement. And, if I remember correctly, if you disconnect the (white?) thermister wire from the control box on the back outside of the refrigerator, the fridge should go to maximum cool. If it does this, it verifies you have a bad thermister. This technique was suggested by the Amish Refrigeration guy and worked for me
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George Schweikle Lexington, KY
2005 Safari (Monaco)Trek 28RB2, Workhorse W20, 8.1, Allison 1000 5 spd, UltraPower engine & tranny, Track bars & sway bars, KONI FSD, FMCA 190830, Safari Int'l. chapter. 1999 Safari Trek 2830, 1995 Safari Trek 2430, 1983 Winnebago Chieftain, 1976 Midas Mini
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09-16-2024, 06:03 PM
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#6
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Member
Join Date: May 2018
Location: Coburg, Oregon
Posts: 50
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Thanks George, I will give that a try. So if bad I can cut the bad one off and splice on the new one, Either wire makes no difference ?
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2004 Gulf Stream Ultra Super C
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09-17-2024, 11:33 AM
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#7
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Member
Join Date: May 2018
Location: Coburg, Oregon
Posts: 50
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Thanks so much George, I disconnected the white wire and temp went down to 25 degrees. Thanks again.
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2004 Gulf Stream Ultra Super C
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09-17-2024, 12:01 PM
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#8
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Senior Member
Join Date: Nov 2015
Posts: 28,354
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Although your fridge model uses Automatic Temp Control the thermistor supplies feedback to preset thermostat
Unplugging the thermistor leads at lower circuit board triggers Backup Operating System (BOS)
BOS then controls temp by continuous cooling .....better to freeze some items then allow then to become too warm
Snip-The-Tip is a Rheostat Control that replaces your Fin mounted thermistor.
Cut thermistor off......splice wires from Rheostat and mount to sidewall of fridge
Turn the knob to increase resistance (cooler) or decease resistance (less cooler)
Some folks prefer to replace with OEM......pull the leads out thru fridge backwall, snake new thermistor leads thru back wall and connect to circuit board placing thermistor on far right fin mid position
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I took my Medication today. HAVE YOU?
Dodge 3500 w/Tractor Motor
US NAVY---USS Decatur DDG-31
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10-18-2024, 12:14 AM
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#9
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Senior Member
Gulf Streamers Club Ford Super Duty Owner
Join Date: Aug 2015
Location: Memphis, TN
Posts: 4,812
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It is also possible that thermistor is out-of-spec on its readings; was about a $15 parts few years ago, and you can go to service manual or youtube to find out what it should read with ohmmeter and how to test. Have you verified the 45-degree w/ 2nd thermometer?
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(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10
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10-19-2024, 10:14 AM
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#10
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Member
Join Date: May 2018
Location: Coburg, Oregon
Posts: 50
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fridge temp
Yes 45 degrees is right on. Went to a more spendy thermistor and now works like it should. Thanks to all that helped great response.
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2004 Gulf Stream Ultra Super C
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