The ICM2810 is a low cost replacement for the Goodman PCBBF136 and PCBBF140 furnace control boards which is used to control gas valve, ignitor, blower motor, inducer, humidifier and air cleaner. Low cost, Goodman replacement board Microprocessor-based precision Controls inducer and blower fan motors, hot surface igniter, and gas valve Monitors timing, trial for ignition, flame sensing, pressure switches, limit switches Designed for 100% gas shutoff in case of ignition failure Reverse polarity protection Compatible with 24 VAC standard thermostat Twinning compatible with another ICM2810 control board Compatible with LP or natural gas Provides diagnostic LED to aid in testing/troubleshooting SPECIFICATIONS Pre-purge Time: 15 seconds Igniter Warm Up Time: 18 seconds Post-Purge Time: 15 seconds Total Trials for Ignition: 3 (auto rest after 1 hour) Heat Blower On: 30 seconds Heat Blower Off: Selectable 90/120/150/180 seconds Fan (Heat) On/Off Delay: 1 second Cool On: 5 seconds Cool Off: 45 seconds