York S1-331-09150-000 Control Board Kit Els PW 17895 Because secondary exchangers feature tightly

Because secondary exchangers feature tightly packed fins that can become clogged with sediment or scale

What is the minimum pressure required for operation

the burners lighting and then immediately extinguishing (flame sense failure)

Broad Application Suitability: Optimized for chilled or hot water

Optimized Airflow: The 36-degree blade angle is calibrated for efficient heat rejection in split system heat pumps and cooling units

York S1-331-09150-000 Control Board Kit Els PW 17895 Because secondary exchangers feature tightlyThe York S1 331 09150 000 Control Board Kit is a critical OEM replacement part designed for Simplicity 1A 2 4 stage HVAC systems. This dual stage control board acts as the central intelligence for your rooftop or split system unit, managing the precise sequencing of ignition, gas valve regulation, and flame sensing. As a direct replacement for legacy model S1 03109150000, this kit ensures full HVAC system compatibility with residential and commercial