Rated at 0

which prevents residual voltage buildup and protects relay contacts from arcing or pitting during short-cycle conditions

maintaining the integrity of the safety circuit

The PDT550 is designed to maintain factory-grade accuracy

York S1-031-09170-000 Control Board 30067439-890 Rated at 0As a seasoned technician, you know that a failing defrost cycle is a quick way to kill a heat pump's efficiency and risk compressor floodback in freezing conditions. The York S1 031 09170 000 Control Board is the precise OEM replacement required to restore factory spec timing and temperature monitoring for your defrost sequences. This defrost control board is engineered specifically for York, Coleman, and Luxaire heat pump units, serving as the