Lennox 63W27 Ignition Control

The Lennox 63W27 Ignition Control is a critical OEM replacement component designed for 2-stage variable speed gas furnaces. Built for high-reliability ignition sequencing, this integrated furnace control board manages the 95V hot surface igniter, flame sensing, and blower motor operations. Supporting 18-30 VAC at 60 Hz, the Lennox 63W27 is the direct replacement for legacy part numbers 19W60, 100870-01, 100870-02, and 100870-03. As an essential HVAC replacement part, it features an on-board diagnostic LED to streamline troubleshooting for field technicians. This Honeywell S9230F1014 cross-reference model ensures precise timing for combustion cycles, optimizing fuel efficiency and system safety. Designed specifically for use with the 95V 100536-01 igniter, it must not be paired with 80V systems. Compatibility spans major Lennox platforms including the G60, G61, and SL280 series, providing a seamless field-swap solution for restoring 2-stage heating performance.

Key Benefits:

• OEM Compatibility: Exact drop-in replacement for Lennox 19W60 and Honeywell S9230F1014, ensuring full integration with factory harnesses.
• Advanced Diagnostics: Built-in LED flash codes allow for rapid identification of ignition failures, limit switch trips, or flame sense issues.
• Variable Speed Support: Correctly manages 2-stage induction and blower ramps to maintain precise static pressure and airflow.
• Enhanced Safety: Continuous flame monitoring and automatic safety shutdown protocols protect the heat exchanger and dwelling.

Common Questions:

Is the 63W27 compatible with 80V igniters?
No, this control is strictly engineered for 95V igniters (part #100536-01). Using an 80V SureLight igniter will result in component failure.

Which furnace models use this board?
It is commonly found in Lennox G60DFV, G60UHV, G61MPV, SL280UHV, and SL280DFV units.

What are the diagnostic flash codes for this control?
The board utilizes a red status LED. Flash patterns correspond to specific faults such as "Limit Circuit Open" or "Internal Control Failure," which are detailed in the furnace service manual.

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.