No cool service call. Joe(JC)Ritchal. 04/05/2023 I arrived the call and the customer said that the system was blowing air but it wasn’t cold. I found that the system had very little refrigerant and I got the go ahead from the customer to perform a leak search. I didn’t have enough nitrogen to compete the leak search and someone with need to come out to complete the search. I talked with the customer and made them aware of the fact that we well need to come back tomorrow. Jake Kring 04-06-2023. I inspected the system and added nitrogen to the empty system and found the system to only pressure up on the high side line. I blew nitrogen into the suction line and found it to flow freely through the system and exit out the high side line. I then added nitrogen to the high side line and found the pressure to rise up to 500 psi quickly and not exit the low side line. I found the TXV to be closed permanently. I made this aware to the homeowner and we decided to order the new TXV and install