Lennox Control Board 50A62-121 / 56L8301

Control Board Specifications – Lennox 50A62-121 / 56L8301 Condition: Used – Cleaned and Fully Functional Model Numbers / Labels: 50A62-121 E3, 56L8301 Manufacturer: Lennox Parent / OEM Info: White-Rodgers / Emerson platform used in Lennox ignition systems Part Type: Integrated Furnace Control Board – Automatic Ignition System (ANSI Z21.20) Key Specifications: Control Type: Automatic Ignition Control Board (IFC) Function: Manages ignition sequence, flame sensing, inducer motor, gas valve, and blower timing Ignition System: ANSI Z21.20 certified automatic gas ignition system Operating Voltage: 24VAC, 60Hz, 0.5A max for control circuits Blower / Heat Timing: Selectable DIP switches for heat blower off delays: 60, 90, 120, 180 seconds Flame Monitoring: Flame sense input (56L8301) Circuit Protection: Integrated low-voltage fuses and safety interlocks Diagnostics: LED codes for heat demand, failed ignition, low flame, and reverse polarity OEM Equipment Compatibility: • Lennox gas furnaces • Compatible with White-Rodgers / Emerson ignition systems for Lennox • Typically found in single-stage and two-stage residential gas furnaces • ANSI Z21.20 compliant systems Common Applications: • Residential gas furnaces requiring integrated ignition control • Furnaces using hot surface ignition (HSI) or interlock safety systems • Systems with selectable blower-off delay timing Condition: Used - Like new Curbside pick up: Yes Cash accepted: Yes