good night friends this happened to someone ..? I have a freezing cellar which has given me a lot of headaches the question is that without merchandise it reaches me up to -14 degrees but when they put merchandise (chicken) only up to -5. and the evaporator fills me with a lot of frost. Will the expansion valve be? I am at 20 psi for low with r22 motor two danfoss horses.

The price depends on the ambient temperature. I think the problem you have is a lack of refrigerant, so the evaporator freezes with the r22 at a temperature Of 30 degrees you should have between 50 to 60 psi in bajab