We just bought a brand new 2016 Coachman Catalina 253 RKS and it has the Norcold fridge in it. Now I had had issues with other campers where I had to install fans on the top vent to help the fridge keep cool but now I have the opposite problem.
The Fridge gets too cold...
I know and have read all the cases of this on here and other sites so I ordered and have had good luck with them in previous campers the Snip-The-Tip for the Norcold model I have and cut the thermister off and installed it thinking this will fix the issue. Nope...
I emailed Snip-The-Tip with a pic making sure that I did indeed get the proper one since on there site they show some that have a 5K ohm and one with a 10k ohm sticker on them. They emailed back stating that I had the correct one and there product is hit or miss on these rv fridges. I was floored because I always loved there product and it just worked. They also said that the control board could cause this issue. I know I could let the RV dealer to look at it but I'm not like that... So I ordered a new control board for this unit and installed it with the snip-the-tip still installed. Same thing still gets too cold with no control of the temp in the fridge area.
I have bought a new thermister and clip since dumb me threw that away thinking it would never be needed again.
That is where I am at. I have not tried putting the new thermister and clip back in place on the 10th fin over from the left and do a test run.
I'm just not confident that this will fix the issue and boggled on what it could be if no the control board or thermister?
Oh I wanted to add that all my testing has been with the AC Plugged in and I have not ran the fridge on gas yet... Something to try later.
Here are some pics to help out...
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Snip-The-Tip
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Original Control Board (Yes the Ground and 12VDC wires are removed in this pic)
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New Control Board