Why is my furnace clicking but not lighting

the switch remains open

High-Pressure Integrity: Designed to maintain a reliable seal under rigorous discharge pressures

and other non-corrosive gas services

Lennox 76F73 Relay Why is my furnace clickingThe Lennox 76F73 Relay is a heavy duty, stacked DPST Heat Sequential Relay designed for precise load management in residential and commercial electric furnaces. As a high performance HVAC sequencer replacement, this 240V component ensures the staggered activation of heating elements, preventing excessive inrush current that can trip breakers or damage sensitive control boards. Operating as a normally open relay, the 76F73 is engineered for high cycle