Furnace Control Circuit Board 21D83M-843 for Lennox/White Rodger

Brand new ignition control board kit compatible with Lennox and White Rodgers furnaces. Replaces part numbers 21D83M-843, 32M8801, 10M9301, 12L6901, 56L8401, 83M00, and 24L8501. Kit includes: Ignition Control Board, Wiring Harness (9-pin to 12-pin), Wiring Harness (4-pin to 6-pin), Circuit Breaker, 4" Blue Wire, Mounting Panel, 4 Stand-off Fasteners, 2 Wiring Diagrams, and Instruction Manual with Diagnostic Chart. For best results, take photos of your old board before removal to ensure correct wire placement. Professional installation is strongly recommended for safety and accuracy. If your system locks or shows errors, try a full power-off reset or wait 1 hour. Persistent issues may require using the diagnostic chart to identify other component causes.