True 49 cu. ft. / 1388 liter Commercial Freezer T-49F-RC "freezer holding constant temp" Questions

...freezer temp is at 39 and will not go down. Fridge is working 100% fine. HELP!! Check for ice build-up in and around the freezer fan where the blades are, if you can see ice in there (some times it ...

Turbo air m#TSF-72SD will not hold below freezing. Cleaned coil an temp dropped to 29 but no further... If everything else is in proper working order, either a refrigerant level issue or and expansion