Replacing a cracked or compromised venter motor housing is vital for preventing pressure switch faults and potential backdrafting

If the blocked flue limit switch trips

For the automatic venting feature to function

technicians can restore the original close-off force and operating characteristics of the valve assembly without requiring a full valve body replacement

It will close the circuit once the sensor cools to 105 degrees F

Bard HVAC 8402-075BX Limit Switch Replacing a cracked or compromisedThe 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