Air conditioner not blowing cold air anymore

hi! there,
if no cold blowing,evaporator is not working,have you ever heard compressor is running,check this out,no compression of course you dont have cool on evaporator.if the compressor is running check the oprating current,if still have enough freon charge,if not running check thermostat reset setting on the coldest,ifn still not run check overload relay on panel control reset lever to put back compressor to run,check condensing fan if working,if not check also over load protection,this should be done by ac tech nician.have a nice day,dont gorget to rate me, thank's