Received a call that the new AC system that was installed last year which does the kitchen, living room and family room area was not cooling, upon arrival I cycled the system and found that it was going out on the low pressure control. I bypassed the low pressure control and allowed the system to operate, I attempted to add refrigerant to see if I could get the suction pressure to come up and I found that my sub cooling was high and my superheat is high, this is a sign of a failed TXV. We will need to get a new TXV valve and we will have to replace it. The parts are covered under warranty, we will need to verify if there is an extended labor program on the equipment.