OEM Lennox Ignition Control Module — 80K12
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The genuine OEM Lennox 80K12 ignition control module is the brain of your Lennox furnace's startup sequence. It manages the timing of the draft inducer, igniter, gas valve, and blower while continuously monitoring flame sense and safety inputs. When this board fails, the entire heating cycle can stall — leaving you with no heat even when every other component is healthy.
Common failure symptoms include:
- No response when a heat call is sent from the thermostat
- Igniter or inducer fails to energize
- Furnace locks out after repeated failed ignition attempts
- Erratic diagnostic LED flash codes or a completely dark board
Voltage surges, moisture, cracked solder joints, and burned relays are frequent causes of module failure on aging equipment. Replacing with the correct Lennox 80K12 restores proper ignition logic and flame-safety supervision.
Why OEM matters: Lennox ignition modules use board-specific firmware, timing values, and connector pinouts matched to your furnace model. A universal or aftermarket board can misfire the sequence, defeat safety lockouts, or damage the gas valve. The OEM 80K12 is a direct plug-in replacement engineered for exact compatibility and long-term reliability.
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