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...
Original Control Board (Yes the Ground and 12VDC wires are removed in this pic)
New Control Board