provided the gas valve and control module are functioning correctly

This often indicates the sensor is fouled or unable to send the necessary flame rectification signal back to the control board

Durable Construction: Features a rugged housing and a standard 1/4" barbed fitting for reliable hose attachment under thermal stress

or intermittent "soft" lockouts related to the air pressure switch failing to close

A.J. Antunes 803113402 Pressure Switch 30067439-890 provided the gas valve andThe Antunes 803113402 is a heavy duty RHGP H high gas pressure switch designed for critical safety monitoring in industrial and commercial combustion systems. This SPDT gas pressure switch operates within a 6 15 PSI range, ensuring precise cutout when line pressure exceeds setpoint limits. Featuring an auto reset mechanism, this unit is the direct replacement for 803113202, which was a manual reset model that is no longer available. Technicians should