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Old 07-20-2013, 07:08 PM   #1
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Dometic RV 4 door Refrigerator Fan MOD

I purchased this double fan many months ago and recently decided to install it prior to my one month trip.
Bottom line it lowered the temp in the refrigerator from 37 to 34 degrees in the hot humid days and the back was in the direct sunlight.

It was easy to install after I found a contant 12 volts DC. The fan has a nice switch that you can turn on or off as needed. That is how I found out how well it worked. Was easy to mount.
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Old 07-20-2013, 10:10 PM   #2
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Iggy. Where did you get the fan? When we were in Florida recently it was not unusual for our refrigerator to get into the upper 40's. we had to toss a lot of food. On my 2011 378 we also have the 4 door refrigerator.
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Old 07-20-2013, 11:06 PM   #3
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got mine on EBay.... $13.50......mine does not have a switch...but I would never use it. Have had it for three years....still running.
RV Refrigerator Fan for Dometic / Norcold 12v Refrigerators.

rv fans | eBay
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Old 07-20-2013, 11:23 PM   #4
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Quote:
Originally Posted by buddyu View Post
Iggy. Where did you get the fan? When we were in Florida recently it was not unusual for our refrigerator to get into the upper 40's. we had to toss a lot of food. On my 2011 378 we also have the 4 door refrigerator.
Here is a link to Ebay and the seller. I like the switch because you can turn it off when you really don't need it.
$13.75 and free shipping. That is $5 cheaper than I paid

Dometic Refrigerator Fan w on Off Switch to Increase Cooling Standard Model | eBay
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Old 07-21-2013, 09:57 AM   #5
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Iggy, where did you pick up the 12v for the wiring?
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Old 07-21-2013, 10:14 AM   #6
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Iggy, where did you pick up the 12v for the wiring?
You can pull power from the fridge light. You need to find the constant Hot wire by using a 12 volt test light. Probe the wires with the switch off and see which wire lights up the test light.
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Old 07-21-2013, 10:59 AM   #7
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Iggy, where did you pick up the 12v for the wiring?
I actually got my 12 volt DC from the outside rear of the unit.
I drilled a hole thru for the wire and sealed with silicone. No biggy.
The DC buss is to the right of the blue water valves for the ice maker and door water.
Check with a meter to verify polarity as it may be differnet colors
Here is a picture that someone left here that shows the DC terminal block.
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Old 07-31-2013, 02:33 PM   #8
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Iggy, didn't you also pull fridge and installed a fan or two with ducting on top of the fridge to pull out hot air on top? My 4 door heat shoots up to 44-48 when traveling on just about every trip.
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Old 07-31-2013, 03:01 PM   #9
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Iggy, didn't you also pull fridge and installed a fan or two with ducting on top of the fridge to pull out hot air on top? My 4 door heat shoots up to 44-48 when traveling on just about every trip.

No I haven't installed any other fans.
Are you sure the doors are locked closed when travelling? That i sthe only thing I can think of that would increase the temps that much.
What is the temp before you travel?
I usually cool mine down at home for a day prior to my trips.
My refrigerator warms up a little when travelling but haven't noticed how much. I will check next trip.
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Old 07-31-2013, 07:44 PM   #10
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Mine said 43 this morning but it was really 35 inside. That outside thermometer is not worth the time it took to install it. Got a $10 refrigerator thermometer to put inside and found out the fridge is fine, it is the digital outside thermometer that is no good so I just ignore it.
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