Commercial HVAC service. Replace the high-pressure switch for circuit A. I shut service valves and reclaimed 13 lbs of 410a. I pulled the old pressure switch and installed a new one. Added 12.6 lbs of 410a out of the tank that was used to reclaim Freon. Added 2 lbs of new 419a. I rewired the unit with a new switch and turned on the power. I let the board reset unit, and it is cleared of all alarms, ready for a signal from build automation to start up. Material used in notes