OFFICE TO FOLLOW UP WITH CUSTOMER TO GIVE QUOTE FOR UNLISTED ITEM AS WELL AS TO SCHEDULE REPAIR Upon arrival inspected air handler in the attic for 2nd floor. Found evaporator coil frosting up. Needed to defrost coil before I could proceed to check system operation. Remove zone damper to check zoning operation. Need to verify that zone dampers are opening and closing on call. Remove all x3 dampers from ductwork and had thermostat call for cooling. Dampers open and closing on call normally. When system is calling for cooling. Condenser is short cycling. Shut system down and remove sensing build from suction lines. Installed sensing bulb in hot water to force metering device open. System began to operating as it should. Pressure are stable: low side pressure 125psi / high side pressure 310psi system is no longer short cycling when sensing bulb is remove from suction lines. Supply temp is 54F degrees return temp 75F degree System has a bad metering device that needs to be replaced. Meter