I am assuming you mean it will not shift from heat to A/C. This could be because of a stuck reversing valve. You can tap it lightly!!! on either end but not on the side because if you dent it, it will for sure be stuck then. This could also be due to a low refrigerant charge and it just isn't cooling.
Answers & Comments
I am assuming you mean it will not shift from heat to A/C. This could be because of a stuck reversing valve. You can tap it lightly!!! on either end but not on the side because if you dent it, it will for sure be stuck then. This could also be due to a low refrigerant charge and it just isn't cooling.