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Old 09-10-2016, 05:37 AM   #1
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Fridge fans added in chimney

My norcold 1200 series worked but was not REAL cold. After reading other people's chit chat about fridge fans, my inspection found my fridge did not have any fans. Zero. I found abandoned wiring from the controller to the top area but no fan.

A few months ago, I intalled 2 fans at the bottom area which was easily accomplished from the side access door. The 2 fans were on separate switches and I found using only 1 fan was usually sufficient.

I just installed 2 fans in the top of the chimney and the result is better. I mounted the fans just under the plastic roof vent cap. The air coming out the top vent now has much more volume and warmer than with only the lower fans. The fridge is cooling much colder now.

The better cooling probably won't surprise anyone but I thought I would post it because someone else might not have fans too or have inop fans.
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Old 09-10-2016, 05:43 AM   #2
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Thanks for posting this. As you said , some members are not aware of this mod.
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Old 09-10-2016, 06:25 AM   #3
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That's still on my list of things to do
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Old 09-10-2016, 06:50 AM   #4
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Pulling HOT air out from the top vent is 100% more efficient than attempting to push HOT air out from the side vent through the top vent.

Manufactures would be far better off abandoning the fans mounted part way up and installing fans at the top.

I had to disconnect the mid fans as they lost some blades which caused them to spin out of balance making them VERY noisy.

I installed four 120mm box fans at the top which were virtually noise free and ran them 24/7. Sold the fan package after installing a residential fridge.

Absorption fridges require any heat transferred to the cooling pipes must be removed QUICKLY otherwise food cannot be kept cold or frozen inside the fridge.

Dr4Film ----- Richard
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Old 09-10-2016, 10:04 AM   #5
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I did the same as Dr4film except used 3 muffin fans on the roof and added one below by the outside vent. Connected them with a temperature sensor so they would turn off when not needed. Probably didn't need that. It was a pretty easy set up to do.

I had the guys a "Cooler Guys" in Bellevue WA set me up with what I needed for around $75 I think.

https://www.coolerguys.com/products/...cabcool-1203-m

System worked as well as the NoCold could.

If you are not ready to go residential you might try this mod.

Good luck
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Old 09-11-2016, 02:56 AM   #6
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Should have a overheat thermostat to shut fans off in case of fire!
Does anyone know the status of the class action lawsuits against norcold?
I think it is in Florida and California.
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Old 09-11-2016, 04:10 AM   #7
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Here's my install. You don't NEED four fans (I have a total of 6 avaliable if ever needed), but I run them through an 8A PWM LED dimmer and spin them at 50% and they literally cannot be heard. I had to put an LED on the control to see they they were on. These fans are Noctra fans that are IP65 rated and built to operate in 250 degree enviroments. Everything about them is designed for silent running.



Richard is correct that drawing is far better than attempting to force that can create dead air hotspots
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Old 09-11-2016, 04:15 AM   #8
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Quote:
Originally Posted by DAN L View Post
Should have a overheat thermostat to shut fans off in case of fire!
Does anyone know the status of the class action lawsuits against norcold?
I think it is in Florida and California.
That's why I replaced the OEM cooling unit with Helium
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Old 09-11-2016, 07:43 AM   #9
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I bought 4 fans for 16 bucks and installed them. The no cool did not respond as I wanted and replace the fridge with a Samsung. Problem fixed!!
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Old 09-12-2016, 01:10 AM   #10
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What about slide mounted fridges?
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Old 09-12-2016, 06:30 AM   #11
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I believe the cooling fans mounted as high as possible is the answer. My question is to you that have accomplished this: where did you actually mount them and how did you access the space where you mounted them?
Thanks
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Old 09-12-2016, 07:56 AM   #12
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if your fridge is in the slider then you should have a panel at the top of slide you can mount fans I believe. Ours had a vent on the roof that you can remove the cap and mount your fans then replace vent cap
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Old 09-12-2016, 08:00 AM   #13
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There are two mounted on the rear of the unit ( on the 1200 series ).
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What about slide mounted fridges?
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Old 09-12-2016, 11:24 AM   #14
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Clifftall-is the 1200 series the four door unit? I can hear a fan running when it gets hot. I would them mounted higher up. I start out the day with the unit showing 33deg. Is that good? I have no fans inside the fridge compartment. By late afternoon the temp is up to 37-38 degrees. We are very frugal about opening the doors. I also have a water leak emanating somewhere from the rear top. When I shut off the water supply to the ice maker it stops. So...no ice. Bought the MH used so I have no idea of its history. Thinking maybe there is a split in the supply line up where it enters the back. I suppose I will have to pull the unit out this fall to check it out.

Any thoughts?
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