This equipment cannot be repaired The TXV in the York air handler has failed in the closed position restricting all refrigerant flow above 40 PSI. During testing by adding 40 oz of R422B the suction pressure rose from 37 to 41 while the liquid line pressure increased from 220 to 385 All added refrigerant has been recovered out of the system to the previous running pressures Return nest thermostat to the original temperature setting on cooling mode ****Recommend not running the system to prevent any water damage due to freeze over of the indoor coil or high pressure refrigerant loss**** Fan mode on the thermostat can be used to help circulate conditioned air from the rest of the house