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Old 08-03-2015, 06:05 PM   #1
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Domestic Thermoster Repair Kit

Has anyone tried this mod?
Dometic Thermistor Repair Kit
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Old 08-04-2015, 10:59 AM   #2
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Haven't but have been wondering if my cooling problems are related to the thermistor.
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Old 08-04-2015, 12:29 PM   #3
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I tried it. I couldn't tell that it worked any better than the OEM ones that you slide up and down on the fin. I can't recommend it.
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Old 08-04-2015, 12:54 PM   #4
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Is there a way to test a thermistor?
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Old 08-04-2015, 03:27 PM   #5
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I contacted Dave at the Cooling Unit Warehouse today. He recommended making sure the thermistor is on the top right fin. He said to make sure the tip of the thermistor is at the top and not just the plastic clip. He also suggested that if you suspect the thermistor to be defective to unplug it from the control board, which will take it out of the loop and keep the frig running solid. That is a good way to see if the thermistor is operational or not. Just some thoughts.
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Old 08-04-2015, 04:07 PM   #6
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Works well

Yes, I installed this thermistor kit on my stock Dometic 2351 fridge. It was previously always freezing the refrigerator contents no matter the position of the original sliding thermistor. This kit solved the problem.

I added a wireless refrigerator/freezer temperature monitor to keep tabs on things without opening the door.
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Old 08-10-2015, 06:05 PM   #7
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Update on install of new adjustable thermistor. Ambient temps still in the high 90's. Before install temps ranged from 40 to 50 in the fridge section and 3 to 10 in the freezer. After install fridge temps 37 to 41 and freezer -3 to 2. Thermistor is set at mid range of adjustment. Sounds like an improvement in cooling performance to me.
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Old 08-10-2015, 07:53 PM   #8
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AWCHIEF...does your refrigerator have a control to adjust temperature or is the thermistor the adjustment? My dometic (15 years old) has a 1-5 setting for cooling from the control board. I am adding fans to the condenser in the back but still wondering about replacing the thermistor. Glad this worked for you.
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Old 08-10-2015, 08:36 PM   #9
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Only built in adjustment was sliding the Thermistor up and down on the fin. I noticed no change when doing that. New thermistor is a simple little stick on device with a screw adjustment for temp. I upgraded the fan several months ago. It seemed to help some. In these high temps it runs nonstop. I installed an on/off switch. It is so hot I have been leaving it on. The new fan just hums, not annoying to me at all.
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Old 08-10-2015, 10:12 PM   #10
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I have been battling this problem for a long time. The kit sounds like a workable idea.

My next experiment was going to be the installation of an analog clock across the heater to record the duty cycle of the frig. The problem is I can't find an analog 110 volt clock. They are all gone.

I may just break down and install the thermistor kit
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Old 08-10-2015, 10:51 PM   #11
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Ordered! thanks
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