I wonder how long it takes a keezer to thaw out.
With the lid closed it can easily take 2-4 days (or longer) depending on ambient temps and how good the insulation is.
Is that a metal probe, crimped at the wire? They may get wet inside, which ruins them.
The old style probes used in the STC-1000 had the sensor hermetically sealed within molded plastic. They were impervious to moisture, and could be submerged.*
* For many years I ran our (Samsung, ugh!) kitchen refrigerator on 2 of those plastic molded STC-1000 probes (mounted in parallel, to get the correct resistor value). I finally replaced them with the proper (OEM) sensor, that needed its wires extended, due to a well-needed different placement.
It's totally crazy one needs to hack a $1600 (?) refrigerator (back in 2010) to make it work merely correctly (without totally freezing up every 4-6 months).
I must say, once I moved the temporary, and later, the OEM sensor to its "new" location, the fridge has been running very well, as it should have from the get-go. I haven't had to manually defrost it ever since.
Location, location, location...