Description
The S1-431-01972-100 is a furnace control board kit — essentially the “brain” of a furnace or gas-electric HVAC unit. It handles ignition, burner sequencing, safety checks (from sensors, flame sensors, limit switches, etc.), blower/fan control, and system diagnostics. In short: when your furnace gets a call for heat, the control board coordinates all steps — from inducing draft, igniting the burners, monitoring flame presence, to activating blower motors — ensuring the furnace runs safely and correctly.
Key Features
- Manages ignition sequence and gas-valve control
- Monitors safety and flame-detection sensors, pressure switches, limit switches, and other safety devices
- Controls blower/fan motors, draft inducer, and blower timing for proper airflow and combustion venting
- Provides system diagnostics and error/fault signaling (depending on furnace model)
- Compatibility: Designed for many York (and related brand) furnaces — acts as a replacement for older/obsolete control board part numbers
