Williams P320907 Fan 320734-701 or persistent "no flame" error

or persistent "no flame" error codes on the water heater's control board despite a good spark

Fail-Safe Reliability: Integrated mechanical spring return ensures dampers or valves return to a known safe state during power interruptions

System Efficiency: Maintains the natural gas to propane conversion ratio required for high-altitude or standard performance

Rugged Steel Construction: The metal sampling tube provides superior durability compared to plastic alternatives in high-velocity air handling units

Technicians should use 105°C rated wiring and ensure that control lines are not run inside the same conduit as power or ignition wires to prevent electrical interference with the modulating signal

Williams P320907 Fan 320734-701 or persistent "no flame" errorThe Williams P320907 Fan is a precision engineered 6 inch diameter fan blade designed for critical airflow management in heating applications. This OEM replacement part features a specific 0. 218" bore (standard 7 32" shaft compatibility) to ensure a secure friction fit on the motor spindle, preventing slippage or vibration induced wear. Primarily utilized within Williams Monterey Top Vent Furnaces equipped with the Blower 2901 assembly, this