What causes a "pressure switch stuck open" error with this part

This HVAC circuit board 24V is the authorized solution for restoring professional-grade performance and energy efficiency to residential heating equipment

this OEM-spec component provides the HVAC reliability required for demanding 6-ton applications

spring-return-open configuration

Common Questions What is the switch action for the A36AGA-9

York S1-024-35903-000 Pressure Switch 320074-702 What causes a "pressure switchThe York S1 024 35903 000 is a high precision dual stage pressure switch engineered for modern high efficiency gas furnaces. This component is critical for monitoring the static pressure generated by the draft inducer blower, ensuring the combustion process only initiates under safe venting conditions. With factory calibrated set points of . 45" WC and . 85" WC, this switch provides granular feedback to the integrated furnace control board regarding