ARB Zero gets too cold

[James86004]

Lately the second zone of our ARB Zero quit working properly. With it set to 37F, the compressor runs constantly, an independent thermometer in the compartment read -27F, and the display reads 105. Any ideas? It is 2 years old.

 

[llamalander]

I had to replace the control board of my Snomaster a few years back because of erratic temps--I got sent a new one for free because that's not how they are supposed to work.
See if ARB will warranty it (sometimes it's easy, sometimes they are crap... ARB that is), that display is probably not accurate

 

[TwinStick]

After you get it figured out, I would suggest a cheap battery operated fan for the inside to help keep temp even and consistent.