My name is Peter. I am a retired field service refrigeration technician.
You did not provide a model number, so I can only advise in general terms.
The basic operation of a combo freezer/fresh food section unit are the same.
Generally, the fresh food section does not have a independent cooling source. It gets its cooling from the freezer section. There is a air damper from the freezer to the fresh food section. This air damper is controlled by a thermostat. I suspect that either the thermostat is bad or the damper. Your air damper is wide open.
The other problem is, your unit is not designed to operated in a garage. If you have a warrantee or a service contract it will be cancelled by the service company. Your electrical components can short out or corrode from the drastic change in temperature. Your control board can fail due to static in the air or condensate.
Answers & Comments
Hello;
My name is Peter. I am a retired field service refrigeration technician.
You did not provide a model number, so I can only advise in general terms.
The basic operation of a combo freezer/fresh food section unit are the same.
Generally, the fresh food section does not have a independent cooling source. It gets its cooling from the freezer section. There is a air damper from the freezer to the fresh food section. This air damper is controlled by a thermostat. I suspect that either the thermostat is bad or the damper. Your air damper is wide open.
The other problem is, your unit is not designed to operated in a garage. If you have a warrantee or a service contract it will be cancelled by the service company. Your electrical components can short out or corrode from the drastic change in temperature. Your control board can fail due to static in the air or condensate.