50A55-743 GOODMAN SILICON CARBIDE SINGLE STAGE INTEGRATED HSI FURNACE CONTROL Controls Gas Valve, Ignitor, Blower, Inducer, Humidifier (Both 120V & 24V Input), and Air Cleaner. Replaces OEM Goodman and White-Rodgers Models FEATURES • Includes flash code diagnostics. • Twinning connection. • Fused to protect low voltage system transformer SPECIFICATIONS Operating Temperature . . . . . . . . . . . . . . . . . . -40 to 176°F Humidity Range . . . . . . . . . . . . . . . . . . . . . . . . 5% to 93% RH (non-condensing) Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Snap in standoffs Electrical Ratings @ 77°F (25°C) Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 25 VAC 50 / 60 Hz Maximum Input Current @ 30 VAC . . . . . . . . . 0.45 amp Relay Load Ratings Valve Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 amp @ 25 VAC 50 / 60 Hz 0.6 pf Ignitor Relay . . . . . . . . . . . . . . . . . . . . . . . . . . 6.0 amp @ 120 VAC 50 / 60 Hz Inducer Relay . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 FLA-3.5 LRA @ 120 VAC Circulator Relay . . . . . . . . . . . . . . . . . . . . . . . . 14.5 FLA-25.0 LRA @ 120 VAC Flame Current Requirements Minimum current to insure flame detection . . . 1 uA DC Maximum current for non-detection . . . . . . . . . 0.10 uA DC Maximum allowable leakage resistance . . . . . 100 M ohms Timing Spec (@ 60 Hz) maximum Flame establishing time . . . . . . . . . . . . . . . . . . 0.8 sec Flame failure response time . . . . . . . . . . . . . . 2.0 seconds NOTE: At 50 Hz, all timing specifications should be increased by 20%. Model Number Pre-Purge Time Heat Delay On Heat Delay Off Sec. Cool Delay On Sec. Cool Delay Off Sec. Post Purge 50A55-743 15 seconds 30 90 / 120 / 150 /180 5 45 15 sec 50A55-743 Replaces: 0130F00005 PCBBF110 0130F00005S PCBBF110S 50A55-289 PCBBF112 50T55-289 PCBBF112S B1809926 PCBBF123 B1809926S PCBBF123S CROSS REFERENCE NOTE: Can also use Universal Kit 50M56U-843

Cross reference White Rodgers 50A55-743 Goodman Furnace Control Board