If a wire snaps

it features a 1/2" MNPT inlet and 3/4" FNPT outlet configuration with a dedicated D orifice to manage flow dynamics efficiently

preventing the premature failure of the secondary heat exchanger

Fail-Safe Operation: The spring return open mechanism ensures the system defaults to the open position during power loss for uninterrupted airflow

The 767A ignitor and its associated hardware must be sourced separately

York S1-031-09186-000 Control Board 319847-401 If a wire snapsThe York S1 031 09186 000 Control Board is a critical modulating furnace control board designed for high efficiency HVAC systems where precise thermal management is required. As a genuine OEM York replacement part, this module regulates advanced firing rates by interfacing directly with the gas valve, inducer motor, and blower motor for seamless ignition sequencing. Field technicians rely on the York S1 031 09186 000 to maintain modulating furnace