Description
Norcold Thermistor Assembly (618548)
DISCONTINUED AND REPLACED BY NORDOLD 621742
Works with the following Norcold refrigerator models:
- N6XX: N611, N621, N622, N641, N642
- NX611, NX641, NXA641
- N8XX: N811, N821, N822, N841, N842, N843
- NX811, NX841, NXA841
- 900 series: 962, 963
- 9000 series: 9162, 9163, 9182, 9183
- 2117
Any numbers or letters after the model numbers are not important for this part. The thermistor has a 4 prong connector that will snap into the light fixture located up at the light bracket. The other end clips to the 10th fin from the right hand side.
Troubleshooting:
Potential issues a new thermistor can solve:
- Freezing everything in refrigerator compartment, regardless of temperature setting.
- Temperature setting having little to no effect on inside temperatures.
- No cooling at all.
- Insufficient cooling.
Tools Needed:
Your fingers
Install Time:
1 minute. 2 minutes if you haven't had your coffee yet.

Warranty Information
Product Videos
Reviews
23 Reviews
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great service
Very helpful analysis of my problem. Prompt shipping.
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Easy solution to cooling problem!
Worked like a charm ... Turned off refrigerator in RV then unplugged old thermistor .. plugged new one in ... turned refrigerator back on ... seems to be working properly now ...
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Thermoter
Fast shipping and simple to replace.
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Works great!
Ordered it on Monday and was delivered Tuesday.
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Great Company & Fine Product
My Norcold RV Fridge N611 was locking up on me. Being a novice, I searched for the answers on the 'net. Finally, I learned how to unlock it but had to repeat it every two days. I ordered a thermistor wire from The Norcold Guy and it arrived on time. Just installed it and we shall see. But as to the company and their products no complaints and yes I highly recommend them.
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Refrigerator like new
Solved our refrigerator problem