The Daikin-McQuay 7900094 Printed Circuit Board is a vital electronic control component designed to manage and coordinate HVAC system functions. It works by processing signals from thermostats and system sensors to control key operations, including the compressor, blower motor, fan, and safety circuits for efficient performance. Commonly used in Daikin-McQuay air conditioners, heat pu... https://www.partshnc.com/7900094-daikin-mcquay-printed-circuit-board