Replacing a weak capacitor is standard preventative maintenance to prevent motor winding damage

this Relay F/HSG provides the precise electrical switching required to maintain optimal combustion control and safety sequences

serving as a direct solution for ignition failures or intermittent "lockout" codes caused by carbon buildup or porcelain cracks

or SPST applications by using the appropriate terminals

Working in the field

Resideo Q4100C9046 Hot Surface Ignitor Replacing a weak capacitor isHandle your next service call with the Resideo Q4100C9046, a field proven 120V silicon carbide hot surface igniter designed for maximum durability in gas fired furnaces and boilers. This high temp HSI replacement features a robust ceramic block rated for 392F (200C), ensuring stable performance in both natural gas and liquid propane (LP) applications. The 19 1 8" lead length provides ample slack for complex cabinet routing, while the stripped end