Fenwal 35-655921-001 Ignition Module 320788-703 Common indicators include the burner

Common indicators include the burner extinguishing immediately after the trial for ignition or the sensor failing to "prove" the flame despite a visible burner light-off

While the 3/8" x 5" copper bulb can be used for air sensing

verify if your specific installation requires ball bearings for high-side axial thrust or specialized orientations

this pilot burner assembly offers a direct-fit solution that maintains factory-specified millivolt signals and spark gaps

Fenwal 35-655921-001 Ignition Module 320788-703 Common indicators include the burnerThe Fenwal 35 655921 001 is a microprocessor based 24 VAC Hot Surface Ignition (HSI) Control engineered for precise management of gas fired appliances. This direct replacement ignition module handles the complete demand sequence, including combustion blower control, flame sensing, and diagnostic monitoring. Designed for systems under 400K BTU, it features a 5 second Trial for Ignition (TFI) and a 5 second ignitor heat up period to ensure stable