OT, any refrigerator techs here?

It needs to be reading 0 are below . And the panel is the back wall of the freezer compartment . Down low first 2 foot are so you will see screws that hold the panel on remove the racks and bottom basket in freezer to access the panel . And you will find the evaporator coils like stated before it should have a light covering of frost on it , if only part of it has frost then its low on freon. If its frozen solid then it has defrost problem. Ps I have been working on small appliances for over 15 years . Pm me for phone number and I will try walking you threw it over the phone .