In typical residential applications

If the switch remains open (no continuity) even after the furnace has completely cooled down

This dual-rod flame sensor and spark electrode is engineered for precise direct spark ignition (DSI)

This OEM Lennox part is a manual reset

ensuring precise alignment and stability in high-static pressure applications

Rheem-Ruud 60-18556-86 Pilot Valve Refrigerant In typical residential applicationsAs a seasoned tech, you know that finding an exact OEM replacement is non negotiable for safety and system calibration. The Rheem Ruud 60 18556 86 Pilot Valve is a single stage gas valve engineered for HSI DSI ignition systems and high demand applications. With a massive 240,000 BTU HR capacity, this natural gas valve features a 1 2 inch NPT input and a 3 4 inch NPT output, ensuring it meets the flow requirements of both large residential and