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The onboard diagnostic LED provides visual fault codes
or pressure at a centralized control panel
and Janitrol heat pumps
Genuine OEM Compatibility: Direct replacement for 1320362
Carrier HK32AB201 Defrost Control 318423-701 The onboard diagnostic LED providesThe Carrier HK32AB201 Defrost Control is a genuine OEM replacement board engineered for precise demand defrost cycles in residential and light commercial heat pumps. Designed for specific Carrier, Bryant, and Payne central air systems, this board monitors liquid line temperature and coil temperature to trigger defrost only when necessary, maximizing system efficiency and preventing unnecessary compressor wear. This integrated solid state control