Daikin-McQuay 4009627 Circuit Board R-407C Verify that 120V power is

Verify that 120V power is reaching the leads before determining the motor has failed

providing a reliable mechanical solution for total system balancing and enhanced contractor-level airflow control in both horizontal and vertical duct orientations

20" WC SPST air pressure switch functions as a critical safety limit

a dedicated LP pilot assembly with the correct orifice diameter must be used

As a genuine Williams replacement part

Daikin-McQuay 4009627 Circuit Board R-407C Verify that 120V power isThe Daikin McQuay 4009627 Circuit Board is a critical OEM replacement part designed for high performance management of commercial HVAC systems. Engineered specifically for the Daikin VCD series (models VCD 072 through VCD 242), this printed circuit board acts as the central processor for integrated system logic. As a veteran grade HVAC control board, it regulates vital equipment parameters including fan speed control, compressor staging, and precise