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Old 09-04-2024, 10:54 AM   #1
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RV fridge fan install help needed

Hey there -

The Norcold N8XC fridge in our RV isn't working very well. Sits at 45 degrees when temps get high. I'm thinking it's probably the fan and am thinking about installing a fan to move the air behind the fridge.

I've watched countless youtube videos on how to make the 12volt connection but my rv doesn't have those handy little connectors sitting out there. I have a single-plug outlet, though.

Is there an easy way for me to connect one of those after market fans?

Thanks!
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Old 09-04-2024, 01:05 PM   #2
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The black and white wires entering under the outlet ( picture 2 ) are 12 volt power and ground .

Or were you thinking of using a 120 volt fan ?

By " handy little connectors " do you mean the 12 volt wires go directly to the control board and there is no terminal block like this.
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Old 09-04-2024, 01:54 PM   #3
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The black and white wires go into the plywood and (I assume) into the outlet...? I don't see a terminal block like you mention, so I'm curious how I tap into the 12V system.

I've only seen 12 volt fans for RV's, so that's what I hope to use.

Maybe I need to open the outlet box and see where those wires go?
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Old 09-04-2024, 08:31 PM   #4
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Quote:
Originally Posted by Heidi Kuntz View Post
The black and white wires go into the plywood and (I assume) into the outlet...? I don't see a terminal block like you mention, so I'm curious how I tap into the 12V system.

I've only seen 12 volt fans for RV's, so that's what I hope to use.

Maybe I need to open the outlet box and see where those wires go?
the outlet in your bottom picture is 110v. the black cover with yellow sticker on it should contain your 12v
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Old 09-05-2024, 05:43 AM   #5
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The slide fridge fan in a former 5er started squalling. While I had the fridge tilted over onto the island I installed 2 computer fans. I think the pair was less than $80.
Slide setups are more prone to heat as they don't have a roof vent for the heat to escape.
They have a lower and upper vent in the wall of the slide and the fan/fans are needed to evacuate the heat.
The non slide fridge in our current TT has a roof vent and does well.
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Old 09-05-2024, 11:16 AM   #6
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Quote:
Originally Posted by Heidi Kuntz View Post
The black and white wires go into the plywood and (I assume) into the outlet...? I don't see a terminal block like you mention, so I'm curious how I tap into the 12V system.

I've only seen 12 volt fans for RV's, so that's what I hope to use.

Maybe I need to open the outlet box and see where those wires go?
The 120 volt outlet is best not disturbed ; internal connections could be damaged.
The 12 volt wires ; will not go into the outlet .
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Old 09-05-2024, 02:02 PM   #7
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You could use T taps to get power from your black and white 12v cables.
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Old 09-28-2024, 08:00 AM   #8
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Thanks everyone! I got the fan installed and working
Unfortunately, it didn't fix the issue. I tried the dollar bill test and it failed miserably. I got some weatherstrip tape and installed it around the fridge and freezer doors. Still too loose. Maybe I didn't use a thick enough one? Maybe it wasn't the best product for this purpose? What have you seen work? (I've checked the forums on this and they all say you have to replace the doors, but there must be a better way!)
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Old 09-28-2024, 08:09 AM   #9
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Hello sir, I have been told by others to heat the seal up with a heat gun and it will go back to it's original shape. Just be sure not to get to close just enought to heat the seal and watch it expand. Then after doing this do the dollar bill check again. I am not familiar with your particular model but if after doing this the problem still persists get on the internet and see how to block off air flow and manage the air better so that your bottom vent is pulling in the air and the top is evacuating this hot air. There are tricks to sealing off the top of your refrigerator where the hot air gets trapped so that this does not happen and will greatly improve efficiency. Good Luck and let us know what you find out.One other thing of note is to ensure your thermostat is working properly
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Old 09-28-2024, 11:10 AM   #10
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Also, check the thermister. I had poor cooling almost right after having the Amish Refrigeration guy rebuild a Dometic reefer on a previous motorhome. He suggested disconnecting the thermister wire from the back outside connection which sets the reefer into max cool. If this process results in better cooling, the thermister is faulty. One solution is to install a snip the tip replacement thermister: https://snip-the-tip.com/

As with almost anything these days, a google search on the topic will being more information & videos

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.......One other thing of note is to ensure your thermostat is working properly
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