Bard HVAC 8402-075BX Limit Switch it is a sign of

it is a sign of restricted airflow through the heat exchanger

Verify the 1NO-1NC contact state with a multimeter before energizing the control circuit

Standard Fitting: Equipped with a knurled 11/32-32 DL male nut for a tool-secure connection to the power unit

providing a direct-fit solution for models such as the Williams 5009622A and 50H9622A series

Bard HVAC 8402-075BX Limit Switch it is a sign ofThe Bard 8402 075BX Limit Switch is a critical safety component designed for precise thermal regulation within Bard wall mount air conditioners and heat pump systems. This specific high limit control features a 7 170F AUTO reset configuration, ensuring the unit cuts power to the heating elements or compressor if temperatures exceed safe operational thresholds, then automatically resets once the plenum cools. Engineered as a direct replacement, the