BASO Gas Products C661BFA-1C is a 24 Vac intermittent pilot ignition control board designed for reliable gas burner management in residential and light commercial equipment. This compact, microprocessor-based control provides precise timing and monitoring for pilot ignition and flame sensing, ensuring safe startup and operation of gas-fired appliances.

Featuring remote flame sensing capability and a single 50-second trial for ignition, the C661BFA-1C simplifies ignition sequencing while reducing system wear. The control includes a 15-second inter-purge and 4-second pre-purge to clear combustion paths before ignition, and intentionally does not perform ignition retries, locking out safely if the pilot flame fails to establish.

The board’s built-in LED status indicator aids in quick troubleshooting, helping technicians and installers diagnose ignition and flame failures efficiently. Engineered for use with standard 24 V gas valves and compatible with many furnace, boiler, and water-heater systems, this control offers dependable performance and long service life.

Key Features:

• 24 Vac intermittent pilot ignition control

• Single 50-second trial for ignition (no retries)

• 15 sec inter-purge, 4 sec pre-purge sequencing

• Remote flame sensing support

• LED diagnostics for easier service

• Designed for gas furnaces, boilers, and similar appliances