I arrived to find that the txv is sticking. It works for a spurts, the system worked for a day and a half after the proper refrigerant charge was applied. Today it was frozen. I removed the temperature sensing bulb from the suction line and the coil thawed. I have ordered a txv from Aaron that should be here by the middle of next week. Since the system was overcharged at the time of instal this will be a warranty repair.