Lennox Y4151 Universal 2-Stage 3-Speed PSC Furnace Control Module

The Lennox Y4151 is a universal integrated furnace control module designed for two-stage hot surface ignition (HSI) systems with PSC (Permanent Split Capacitor) blower motors. This comprehensive control kit provides reliable ignition control and blower management for residential gas furnaces.

Key Features:

• Two-stage gas valve control with microprocessor-based monitoring and fault analysis
• 3-speed PSC circulator blower output (14.5 FLA, 25 LRA at 120 VAC)
• Includes universal 120V silicon nitride ignitor compatible with both 80V and 120V systems
• Diagnostic LED indicators (tri-color: green, red, amber) for streamlined troubleshooting
• 120V outputs for humidifier and electronic air cleaner (1 Amp max each)
• Two-speed inducer motor control (2.2 FLA, 3.5 LRA at 120 VAC)
• Adjustable fan delay options via dipswitches for heat and cooling cycles
• Historical fault retrieval via pushbutton for easy diagnostics
• Replaceable automotive-style 3-amp fuse protection
• Operating temperature range: -40°F to 175°F

Technical Specifications:

• Input Voltage: 24 VAC control, 120 VAC power (60 Hz)
• Nominal Input Current: 530mA at 24 VAC
• Gas Valve Relay: 1.5A at 24 VAC, 60 Hz
• Factory standard safety timings: 15 sec pre-purge, 17 sec ignitor warm-up, 2 retries
• Selectable heat fan-off delays: 90/120/150/180 seconds

Replaces OEM Part Numbers: 39M26, 39M2601, 46M9901, 18M3401, 83L9301, 63W26, 100869-03, and various White-Rodgers 50A51, 50M51, and 50M61 series controls. Also cross-references to Goodman 20300001, 20300003, PCBBF120S, PCBBF125; Trane KIT15943, CNT03077, CNT6424, D344301P01; and York/Armstrong equivalents.

This universal control kit simplifies inventory management by replacing multiple OEM control boards across Lennox, Goodman, Amana, Armstrong, Trane, and York family brands. The kit includes the control module, HotRod ignitor, wire extensions, mounting hardware, and detailed installation instructions with OEM cross-reference guide.