Air Conditioning Diagnosis Iced up expansion valve due to moisture in system

Universal 3 speed car rv truck underdash evaporator compressor air conditioner technical specifications material plastc housing, 32 pass 4 way coil (aluminum coil) type 404 single cooling type air flow speed 3 cooling capacity btu about 11000btu / 3200kcal/h color black voltage 12v current 15a power 30w dimensions length 40cm / 15.7 width 35cm / 13.8 height 14cm / 5.5 fit for street / rat / hot rod classic / muscle car truck.