Troubleshooting Dometic Control Board

[slomark]

As a continuation of a prior thread of the refrigerator being too cold. On 120v everything became even colder; -11 in the freezer and 29 in the refrigerator.

How do i troubleshoot a control board, heating unit, and/or the cooling unit?

[Chris_Bryant]

Did the OP actually replace the thermister, or did he do a "snip the tip" type repair?

[Old-Biscuit]

dougrainer wrote:
1. It is NOT the Heating Element
2. It is NOT the cooling unit
3. It is either the Thermister or the control board.
4. A BAD Thermister will/can still ohm out correctly.
5. You replace the Thermister first and if the freezing continues you replace the control board. Doug

According to OPs other post.....thermister has already been replaced.
So.........new board

[dougrainer]

1. It is NOT the Heating Element
2. It is NOT the cooling unit
3. It is either the Thermister or the control board.
4. A BAD Thermister will/can still ohm out correctly.
5. You replace the Thermister first and if the freezing continues you replace the control board. Doug

[Sandia_Man]

I know there are some checks that can be done but didn't bother with trouble-shooting and replaced the thermistor which solved our Dometic over-cooling issues. Our fridge temps eventually progressed into the teens, just spliced in a new adjustable thermistor and all was back to normal. A $20 spot and 10 minutes of time and she's cooling better than new, that was a few years ago. We just googled the problem back then and this highly reviewed solution popped up. Good luck, hope you get it figured out.