Sorry... and my AC unit doesn't freeze up. I keep my cooler at about 37-38 degrees.
you need to wrap the ever-lovin' crap out of the thing with a heavy vapor barrier and make sure it is as air tight as possible and then I have the compressor hooked into a temp controller and the fan on the unit runs 24/7. If I ever get any frost on the coils inside the walk-in, as soon as the compressor clicks off, the fan defrosts the coils almost instantly. there are easier ways to fix the problem but that's how I did it.
It's been running for about two years now.
you need to wrap the ever-lovin' crap out of the thing with a heavy vapor barrier and make sure it is as air tight as possible and then I have the compressor hooked into a temp controller and the fan on the unit runs 24/7. If I ever get any frost on the coils inside the walk-in, as soon as the compressor clicks off, the fan defrosts the coils almost instantly. there are easier ways to fix the problem but that's how I did it.
It's been running for about two years now.