Disconnect the sensor and measure resistance across the leads

also identified as the Lennox 78F9001

Durable Construction: Fabricated from high-grade materials to maintain structural integrity under extreme ambient conditions

Typical indicators include a lifting pilot flame

ASCO 8044A2CSA Solenoid Valve 30067439-890 Disconnect the sensor and measureThe ASCO 8044A2CSA is a high performance 2 way normally closed solenoid valve specifically engineered for critical fuel gas shut off applications. Featuring a robust aluminum body and high grade NBR seals, this valve ensures reliable operation within a 0 25 PSI pressure range. Designed with a 1 inch NPT connection and a high 22 Cv flow coefficient, it provides exceptional capacity for industrial combustion systems. This model operates on 120Vac and