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Bard 8620-296 is an OEM sensor replacement kit used on Bard MEGA-TEC wall-mount air conditioner systems to restore accurate temperature feedback for unit control and diagnostics. Depending on the equipment configuration, this kit is used for common sensing points such as supply air, return air, mixed air, and suction line temperature, helping the controller make correct staging and protection decisions. If your unit is logging sensor faults, showing unstable temperature readings, or running erratically, replacing the sensor with the correct Bard kit is a practical first step. Verify the sensor location and the specific sensor callout in your Bard parts manual before ordering to ensure proper fit and compatibility.