Direct Spark Ignition (DSI) control board. Microprocessor-based. Controls combustion, blower and indoor motor spark ignitor and the gas valve. Monitors timing, trial for ignition and lockout 100% lockout safety feature. Compatible with LP or natural gas. Status LED for fault codes to aid in troubleshooting.

Control Voltage: 24 VAC (18-30 VAC), 60Hz. Line Voltage: 208/230 VAC, 60Hz. Power Consumption: 03A plus gas valve current @ 24 VAC. Operating Temperature: -40°C(-40°F) to 75°C(176°F). Timing: Pre-purge: 45 seconds | Trial for Ignition: 5+2 seconds | Retry Period: every 20 seconds for 15 minutes | Lockout: manual reset | Post-purge: 45 seconds. Inputs: Power: RT and C | Thermostat Interface: R, W and G | Safety Switches: RS, LS and CS | Combustion Motor Hall Effect Sensor | Flame Sensing. Outputs: Spark | Gas Valve: GV | Combustion Motor: BM | Indoor Fan Motor: IFO. LED Indicators: Red LED: Steady ON – Normal operation | Flashing – Fault codes.