My 1.6 year old analog 120V A19 series Johnson Controls external fridge thermostat
no longer works and has failed-on, resulting in the fridge being governed by it's built in thermostat and thus the warmest I could operate my mini cave was 38F, too cold.
Thus I ordered and received after 1 week shipping, a digital A419 series Johnson Controls thermostat from Rancoetc.com
in US prewired in NEMA 1 plastic housing for USD80 + 10 shipping. It can be set to use on 220V or 110V and to govern heating or cooling, you can also control other things such as adjustable differential, adjustable anti-short cycle delay, and a temp offset (setback) function, all of which I left on factory default.
So far works fine, sensor wire connection looks a little delicate.
Unit accidentally came with jumpers set to heat, phoned Rancoetc, they helpfully walked me through changing it.
Green LED light in last picture when lit means power is passing through to fridge.