BASO BGN891-1C Control Board

Optimized for legacy heating systems, the BASO BGN891-1C Control Board serves as a robust direct-spark replacement for aging Lennox Pulse furnace ignition controls. This 24Vac module is engineered to provide precise timing sequences, featuring a 30-second pre-purge, a 30-second inter-purge, and a 30-second post-purge to ensure safe combustion chamber conditions. For reliable ignition, the board executes a three-try for ignition (TFI) sequence at 8-second intervals, followed by a 60-minute retry logic if a flame is not sensed. Utilizing remote flame sensing technology via flame rectification, the BGN891-1C effectively replaces obsolete Johnson Controls G891 series (G891TCA-8101, G891TCA-8103) and various Lennox part numbers including 34K83, 72H68, and 97H02. The kit includes a 6-pin wire harness and 1/4-inch Q.C. terminals for the spark wire, facilitating a straightforward retrofit for technicians servicing G8, G14, and G21 Pulse models.

• Direct Retrofit Compatibility: Engineered specifically to replace discontinued Lennox Pulse furnace parts such as the Lennox 99C9701 and 86H30 modules.
• Enhanced Diagnostic Capability: Features a multi-colored LED (Green, Orange, Red) to provide real-time status updates and 100% lockout error codes for faster field troubleshooting.
• Reliable Safety Timing: Standardized direct spark ignition control timings reduce the risk of delayed ignition in high-efficiency pulse combustion environments.
• Broad Cross-Reference: Consolidates multiple legacy SKUs (e.g., 52J1801, 41F46, 73K86) into a single, high-reliability BASO ignition module.

Does this board replace the blue Johnson Controls G891 module?
Yes, the BASO BGN891-1C is the primary replacement for the original blue G891 series used in many legacy Pulse furnaces.

What is the purpose of the 60-minute retry?
If the board fails to sense a flame after three 8-second ignition attempts, it enters a standby lockout for 60 minutes before automatically attempting the sequence again to restore heat without manual intervention.

How do I handle the flame sensing wire during installation?
This board utilizes remote flame sensing. Ensure the white or orange sense wire is connected to the SENSE terminal using the provided 3/16-inch Q.C. jumper included in the kit.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.