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Old 04-22-2015, 12:34 AM   #15
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I've gone through 2 thermistors on the fridge cooling fins. The fan runs incessantly again and only after 2 trips, so that was a waste of money. The fins are cool to the touch so I know it's not overheating. In the evening I just go out and pull the wire off. I check it from time to time and the fins never get more than barely warm. Fridge stays at about 35F.

The PO left me a spare fan with a switch to turn it off. I'm going to install that and try a different brand of thermistor.
Please let me know if you find a better brand thermostat switch. I did a lot of research in computer cooling with the same kind of fans. I found that blowing air out, helped, blowing air in helped more, and blowing air in and out worked the best. I am going to do some testing on this, as I have many of these fans left from inventory. If you want a great low noise 4 inch fan, go to a computer store and buy a ball bearring fan of high quality. Should cost about $15.
The techie guy should know. A great fan can stay on for years, running 24/7 without making hardly any noise, if mounted with screws at all 4 corners.

Al

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Old 04-22-2015, 06:20 AM   #16
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Is this something on newer units? I've heard of the fans, but do not have a fan.
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Old 04-22-2015, 06:31 AM   #17
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I had the same problem with my 25' Airstream. Just traded for a 30' with no fan. Problem solved. Only cost me thousands of dollars...
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Old 04-22-2015, 08:37 AM   #18
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Is this something on newer units? I've heard of the fans, but do not have a fan.

Our 23fb had two frig vents on the side of the trailer, no roof vent, and a frig compartment fan. The 25fb has one frig vent on side of trailer, a roof vent for the frig, and no fan. I think AS that have frig vents on the roof don't have fans since they have better stack effect ventilation, but I could be wrong......


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Old 04-22-2015, 09:10 AM   #19
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Is this something on newer units? I've heard of the fans, but do not have a fan.

My 2006 has a fan. It does not work. Replacing it is on my to do list.
Low priority at this time.
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Old 04-22-2015, 10:09 AM   #20
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Our 23fb had two frig vents on the side of the trailer, no roof vent, and a frig compartment fan. The 25fb has one frig vent on side of trailer, a roof vent for the frig, and no fan. I think AS that have frig vents on the roof don't have fans since they have better stack effect ventilation, but I could be wrong......


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I may be wrong, but the 23 may require the fan at the side vent because of the microwave/convection directly above the smaller fridge?

On our 23FB the factory fan was far too loud. Following the great examples on the forums, we replaced with 3 silent computer fans. They seem effective and we do not hear them at all.


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Old 04-22-2015, 01:01 PM   #21
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My 2006 has a fan. It does not work. Replacing it is on my to do list.
Low priority at this time.
Are you sure it's the fan? If the thermistor is bad it won't allow power to the fan. Before tossing it, run a jumper across the thermistor and see if the fan will run.
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Old 04-23-2015, 07:30 AM   #22
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Yes it is the fan, I varified that power is going to the fan, by passed the thermostat. Still no go. As a former Aviation Electrician in another life I have retained basic troubling shooting 101 skills.
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Old 04-23-2015, 08:19 PM   #23
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Yes it is the fan, I varified that power is going to the fan, by passed the thermostat. Still no go. As a former Aviation Electrician in another life I have retained basic troubling shooting 101 skills.
Michael,
You are making a good point. There is such a great wealth of knowledge here. All of us had careers in different fields. We can probably cover and get help on anything and everything. I have never seen such a great forum. For myself, i flew in the RCAF for 25 years, and then ran a computer business for 17 years. So, troubleshooting is kind of a challenge. I rarely see a broken part or a problem without asking why and can it be prevented next time. I just love it here!

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Old 04-23-2015, 09:42 PM   #24
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Al, I spent 3 months on an exchange program with the RCAF P3s at Prince Edward Island in the early 90s. Wonderful experience working with a truly great group of professionals.
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Old 04-23-2015, 10:31 PM   #25
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Is this something on newer units? I've heard of the fans, but do not have a fan.
It is not the "newer" units, it is the size of the unit. On the larger trailers the refrigerators don't have a microwave above them or shelves or other things. This allows the fridge to be vented directly to the roof. On the 23 and even the 25 FC this isn't possible. They have to vent out the side of the trailer hence the need for the fan. When the fan is working as designed, it works well. When it isn't you will read all sorts of stories, like this one.

I have had mine for 5 years now and have never had any trouble with the fridge. We have camped in temperatures near freezing as well as in 100+ with the sun shining on the compartment. Ours continues to work as designed. Perhaps we have been lucky......?
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Old 04-23-2015, 10:59 PM   #26
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They work as designed with or without upper side vent and fan. If the fan is noisy, replace it with a quality fan that is silent and all is well.

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Old 04-23-2015, 11:00 PM   #27
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Al, I spent 3 months on an exchange program with the RCAF P3s at Prince Edward Island in the early 90s. Wonderful experience working with a truly great group of professionals.
Michael
I flew on the same CP140 from 1981 till 1990. Argus, Trackers and Sea Kings prior. Joined in 1965. Retired Warrant Officer after 25 years of undetected crime
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Old 04-24-2015, 08:05 AM   #28
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Michael
I flew on the same CP140 from 1981 till 1990. Argus, Trackers and Sea Kings prior. Joined in 1965. Retired Warrant Officer after 25 years of undetected crime
Our paths probably crossed a few times. I was an acoustic operator CPO (retired) from 1980 to 95. Spent most of that time flying out of Brunswick, Maine. Flew many joint missions and training exercises with the Canadians. Traded many a case of beer for smoked salmon with their crews. Hopefully we will meet up someday down the road.
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