Frequent trips often indicate a grounded heating element or a faulty thermostat that has lost calibration

With a 1-1/4 inch female NPT connection

restricted airflow over the condenser

Smith 100187874 Gas Valve/Venturi Assembly is a critical OEM component designed for high-efficiency natural gas condensing boilers and water heaters

Adjustable Sensitivity: Features an onboard screw for field-tuning the flow setpoint to match specific system velocities

Fireye MB600PF Flame Relay R-448A Frequent trips often indicate aThe Fireye MB600PF Flame Relay is a high performance flame sensor module designed for integration with the MB 600S multi burner control system. Engineered for demanding industrial environments, this plug in module provides critical flame presence signaling with a rapid flame failure response time of 3 seconds (?? 0. 5 seconds). Operating on 120VAC (50 60 Hz), the MB600PF supports versatile sensing configurations, including ultraviolet flame scanners