FOUND TXV NOT WORKING properly. Need to order and replace. Also need to work on getting more return air to system. Static pressure is high on return side of a/h. This likely is what caused TXV malfunction. Needs addressed. charge up with 2 lbs 410A to keep from freezing up or at least help until new TXV is installed. Note: customer is going to leave doors open to air handler and utility room for now. He is getting louvered doors to both.