OEM Lennox Furnace Control Board — Y0571
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The genuine OEM Lennox Y0571 furnace control board is the central circuit board that governs your Lennox gas furnace's ignition sequence, blower timing, safety monitoring, and heating cycles. It coordinates the igniter, gas valve, inducer motor, and blower relays while continuously reading limit and flame-sensor inputs to keep operation safe and efficient.
Common failure symptoms: A failed control board often produces no ignition, a furnace that won't start or won't stay lit, a blower that runs constantly or not at all, flashing diagnostic LED fault codes, or intermittent lockouts and unexpected shutdowns.
Why OEM matters: The Y0571 board is built to Lennox's exact timing sequences, relay ratings, and safety logic. Using the authentic control ensures proper flame supervision, correct blower delays, and full compatibility with your furnace's wiring harness — protecting the equipment, preserving your warranty, and delivering reliable heat that aftermarket boards may not match.
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