While this assembly includes a 24V AC actuator

the "U" suffix typically denotes "Universal" or retail packaging

extending the service life of critical system components

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Check the flame sensor for carbon buildup and ensure the spark electrode air gap is within manufacturer specifications before replacing the board

Amana-Goodman B1809923S HSI Board R-410A While this assembly includes aUpgrade and restore your heating system with the genuine Amana Goodman B1809923S HSI Board, a critical 2 stage furnace control board designed for high performance gas furnaces. This OEM hot surface ignition module provides precise 120V AC power regulation to ensure reliable startup and consistent heat cycles. Engineered specifically for Goodman Amana GSM and GSU series gas furnaces, it integrates seamlessly with your existing HVAC setup to reduce