12L6901 furnace control board replacement

Your Lennox 12L6901 control board's official cross-reference replacement is ICM Controls ICM2813.

Furnace control boards switch 120/240V line voltage and the gas valve. This page is for identifying the correct replacement part only — it is not a wiring or installation guide. Improper installation can cause fire, electrical shock, or gas hazards; have a licensed HVAC technician do the actual replacement.

Replacement board

ICM Controls ICM2813 Source: ICM Controls Cross Reference Guide (LIAF309-2)
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Board type: Integrated furnace control board

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Sources for this page

ICM Controls Cross Reference Guide (LIAF309-2) Furnace Control Boards section · retrieved 2026-07-19