Hi everyone, my ac blowing hots air in hot summer outdoor temperature (like 115F), but when at moring or night time the outside temperature drop back around 90F then the ac be back to normal cold air. So I still don't know what happen going on? thanks for help
Typically it’s too little or too much refrigerant. These systems are critically charged variable capacity with txvs which can be overcharged or undercharged. Low charge means not enough liquid refrigerant to feed the txv at high load. Excessive refrigerant will trip high pressure switches and disable the compressor at high loads.
