If the switch is open while cool

this ASCO pressure switch features a compact form factor and a 1

High Flow Efficiency: Optimized 5 Cv flow factor ensures minimal pressure drop in high-demand plumbing and HVACR circuits

this OEM replacement kit typically includes the primary insulation and sealing components necessary to reseal the chamber to the burner plate

Resideo Q4100C9040 Hot Surface Ignitor 30067439-890 If the switch is openThe Resideo Q4100C9040 Hot Surface Igniter is a field proven 120 VAC furnace ignitor designed for professional grade service and repair of gas fired appliances. Constructed from high durability silicon carbide, this component provides reliable ignition for both natural and LP gas systems. The unit features a wide ceramic mounting base with a right rib offset, ensuring stable positioning within the burner assembly to withstand high vibration