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Direct Spark Ignition (DSI) control board. Microprocessor-based. Controls Induced Draft and indoor blower motors humidifier output, spark ignitor and 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: 115/23 VAC, 60Hz. Power Consumption: 03A plus gas valve curreny @ 24 VAC. Operating Temperature: -40°C(-40°F) to 75°C(176°F). Timing: Pre-purge: 20 seconds | Trial for Ignition: 6.5 seconds | Number of Trials: 4 (2+2, 3 minutes apart) | Lockout: 1 Hour | Post-purge: dip switch selectable 90, 120, 160, 180 seconds apart. Inputs: power: SEC and COM, thermostat interface: R, W, Y and G, safety switches: limit and vent, combustion motor hall effect sensor, and flame sensing. Outputs: spark, gas valve: GV, induced draft motor, multi speed indoor blower motor, and humidifier. LED Indicators: PWR(green): Steady ON – power to the board | OK(green): Steady ON – no fault | Flashing – fault code | Flame(yellow): Steady On – flame sensed, flashing two times -flame out of sequence.