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• 8408-027 OBSOLETE

• DEFROST SENSOR FOR 621-230-1

Bard 8408-027 is an OEM defrost sensor used with control 621-230-1 on Bard wall mounted packaged heat pump applications to help the defrost system make correct temperature-based decisions during cold weather operation. A properly working defrost sensor helps prevent outdoor coil icing and nuisance shutdowns by providing accurate coil temperature feedback to the defrost control logic, restoring normal heating performance and protecting overall system efficiency. For best results, confirm your unit model and control kit match 621-230-1 and install the sensor in the factory specified location with secure wiring connections to ensure dependable defrost cycle operation.