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Carrier KFCEH0401N03 Defrost Sensor Board
The defrost control board commences the defrost sequence which may be necessary to continue normal heating and cooling operations. The board is influenced by a temperature sensor located in the outdoor unit to decide when to begin.
Important hints your defrost board is in dire straights
- The defrost sequence will not kick in despite that there is a large amount frost that makes the unit run like crap
- The control board could display an error signal produced when the defrost board is bad
- The AC may stop running for the simple fact of lack of airflow through the outdoor unit
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