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Old 12-15-2021, 06:39 PM   #1
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Default Need for refrigerator fan

Hello. I own a 2008 Hi-Lo 15T. When I take my trailer out, I generally turn on the refrigerator fan during the day and turn it off at night. I don't know how much electricity it draws nor how much it really needs to be used and why. I would appreciate it if anyone would provide me some information on this subject.

Thanks, Jerry
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Old 12-15-2021, 10:50 PM   #2
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Jerry, the outside fan for the fridge only comes on when the temperature of the "evaporator?" (I'm never sure what that part of the system is called - but it's a heat ex-changer that transfers heat inside the refrigerator to the outside) gets above a certain level - my fuzzy memory seems to recall 110 degrees. Whatever - it will not run all night but helps to improve the system's performance if it is having to deal with a lot of heat.

I don't recall what the Amp draw of the OEM fan is, I replaced mine with two PC fans that draw less current, are quieter and move more air. I seem to think it was on the order of 1 Amp, but, as I said, it does not run continuously. I think if you take the outside vent screen off (lots of screws), you can get to the fan and its Amp rating is shown on it, if you're really concerned.

- Jack
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Old 12-17-2021, 05:00 PM   #3
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Thanks for the info, Jack!
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Old 12-23-2021, 06:49 PM   #4
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Iím not aware of a switch to use to even turn that external fan on and off unless you are turning the entire refrigerator off at night. Are you perhaps referring to a fan installed in the interior of the refrigerator? Some of us use a small fan inside to circulate the air around the food. This greatly improves the cooling ability. I suppose you could hardwire a 12V fan to do that job, but I bought one at Camping World that runs off a couple of C cell or D cell batteries and they last for quite a few four day or five day trips running 24 hours a day.
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Old 12-23-2021, 09:33 PM   #5
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We have a switch on our internal control panel that can turn the refrigerator fan on or off in our 2509 Classic. But we do not turn it off when the refrigerator is in use during high outside temperature. Like Jack said earlier, the fan still turns off automatically when the outside temperature cools and the heat exchanger no longer needs use of the fan. Beach
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Old 12-23-2021, 10:54 PM   #6
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Thinking about it (always a dangerous process), I believe the coils outside are called the "condenser" - it's where the ammonia in the refrigeration system gives up heat and is transferred from a gaseous state back to a liquid.

Then, the part inside the refrigerator that picks up the heat from inside and turns the ammonia back into a gas is called the "evaporator". It wouldn't make sense to put that name on the outside part.

Sorry, this all came to me just before I was headed off to bed. Must be a symptom of old age.

- Jack
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Old 12-26-2021, 08:07 PM   #7
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Jerry
Due to the design of the Hi Lo, they do not have the traditional "Chimney" for the refer condenser to get rid of the heat generated...To assist with getting the heat out, a small (computer chassis) fan was added behind the upper vent....This is the fan controlled by the Refer Fan switch on the control panel...During a trip this last summer, I found this fan was not enough to handle the heat so I now have 3 computer fans installed on my 2807C...The newer fans draw less amps that the original so that is not a problem...
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