preventing the control board from seeing the proper microamp signal

Solid State Reliability: Advanced reignition control module design offers superior durability compared to traditional mechanical ignitors

When performing a York condenser fan motor replacement

ensuring structural integrity in high-moisture environments

The RS9220 includes specific terminal designations for O and B

Carrier HK02YB159 Pressure Switch 324846-701 preventing the control board fromThe Carrier HK02YB159 Pressure Switch is a critical OEM replacement part designed for precise HVAC safety monitoring in Carrier, Bryant, and Payne systems. As a veteran grade furnace pressure switch, this component functions by detecting the specific pressure thresholds required for safe combustion and blower operation. Its primary role is to act as a safety limit switch, ensuring that the system shuts down if venting or airflow conditions fall