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Haier CPN11XCJ Defrost Sensor Board
The defrost control board will begin the defrost cycle which assists to continue normal heating and cooling operations. The defrost board relies on a temperature sensor located in the outdoor unit to agree when to initiate the defrosting cycle.
What are some indications that my AC defrost sensor board is not working properly?
- The whole system may stop working for the simple fact of lack of airflow through the outdoor unit
- Defrost mode never runs especially when there is a rather large amount of frost that needs to be removed
- The main board could signify a particular error code if the defrost board fails
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