OEM Lennox Integrated Furnace Control Board — Y9894
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The Lennox Y9894 integrated furnace control (IFC) board is the electronic brain of your Lennox gas furnace. It orchestrates the entire heating sequence — sequencing the inducer motor, monitoring the pressure switch, energizing the igniter, opening the gas valve, and timing blower on/off delays. This direct OEM replacement is engineered to the exact firmware, relay ratings, and connector layout that your Lennox furnace expects.
Common failure symptoms: the furnace will not ignite, the blower runs continuously or not at all, flashing diagnostic error codes on the board LED, intermittent no-heat calls, or a board that shows scorch marks and blown traces around the relays. Power surges, moisture, and aging capacitors are frequent causes of control board failure.
Why OEM matters: the Y9894 uses Lennox-specific ignition timing and flame-sensing thresholds. A generic or aftermarket board can misread flame signals, short-cycle the system, or fail to satisfy safety lockouts — risking nuisance faults or unsafe operation. Installing the genuine Y9894 guarantees correct fit, proper safety logic, and full compatibility with your Lennox furnace so you get reliable, code-compliant heating.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days