OEM Lennox Direct Spark Ignition Control Board — 96W66
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30-Day Returns
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The genuine OEM Lennox 96W66 Direct Spark Ignition (DSI) Control governs the ignition sequence in your Lennox furnace. It energizes the spark electrode, verifies flame via the sensing circuit, and safely sequences the gas valve and blower — coordinating a clean, reliable light-off on every heat call. This board is engineered to the exact voltage, timing, and safety parameters your Lennox equipment expects.
Common failure symptoms: When the 96W66 fails, you may notice the furnace failing to ignite, repeated lockouts after several ignition attempts, no spark at the electrode, short cycling, or a system that runs the inducer but never lights the burners. Intermittent no-heat calls on cold mornings are a classic sign of a degrading ignition control.
Why OEM matters: Lennox ignition sequences and flame-sensing thresholds are calibrated specifically to the factory control. Aftermarket substitutes can mistime the gas valve or misread flame current, leading to nuisance lockouts or unsafe operation. Installing the OEM 96W66 restores factory ignition timing, preserves your safety interlocks, and keeps your Lennox furnace running as designed. Ships same day for fast, dependable heat.
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