Cleveland Controls AFS-405-121 Switch Els PW 17895 Technicians typically look for chattering

Technicians typically look for chattering contacts

if a pressure drop exceeding 3 PSI is detected across the unit

or visible bulging and leaking from the capacitor casing

The York S1-024-35324-000 Pressure Switch is a critical safety component engineered for two-stage gas furnaces and air handlers

Can the actuator be replaced without removing the valve

Cleveland Controls AFS-405-121 Switch Els PW 17895 Technicians typically look for chatteringThe Cleveland Controls AFS 405 121 is a professional grade air pressure sensing switch specifically engineered for HVAC, DDC, and energy management proving circuits. This field adjustable unit features a broad operating range of 0. 05" w. c. to 12. 0" w. c., making it a versatile solution for sensing positive, negative, or differential air pressure across filters, coils, and fans. To ensure reliable performance in low current and computer interface