Lennox 16Y28 Control Board Kit 321894-709 For contractors performing preventative maintenance

For contractors performing preventative maintenance or structural repairs

ensuring consistent CFM delivery and optimized thermal exchange

Two Pole High Pressure Control

Integrated End Switch: Simplifies wiring by providing a dry contact to initiate boiler firing or circulator activation once the valve is fully seated

This is the main combined controller (motherboard)

Lennox 16Y28 Control Board Kit 321894-709 For contractors performing preventative maintenanceWhen you're troubleshooting high end modulating equipment like the Lennox XC20 or XP20 series, a failure in the inverter logic can put the whole system into a hard lockout. This Lennox 16Y28 Inverter Control Board Kit (OEM part 619452 06) is the direct replacement designed to restore communication between the system's control logic and the variable speed compressor drive. This isn't just a standard Lennox furnace control board; it is a specialized