Amana-Goodman B1809904S Control Board 30067439-890 the SGF24 can function as

the SGF24 can function as a minimum positioner to provide a lower limit for output signals from modulating controllers

Dual reducer bushings (1/2" to 3/8" NPT) and a plastic hose barb for 1/4" flexible tubing are provided

Energy Conservation: Integrated setback scheduling and door-open shutdown sensors minimize unnecessary equipment cycling

providing a superior compression seal against hot water

Amana-Goodman B1809904S Control Board 30067439-890 the SGF24 can function asThe Amana Goodman B1809904S Control Board serves as the primary logic controller for specific gas fired furnace systems, providing critical sequencing for ignition, blower timing, and safety circuit monitoring. As the direct OEM replacement for B1809904, this board is engineered for drop in compatibility with Goodman GUN and GUS series units, specifically the 075, 100, and 125 MBH configurations. By managing the HVAC furnace control board operations,