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International Comfort Products H8MPL050B12A1 Defrost Sensor Board
The defrost sensor control board commences the defrost sequence in order to continue normal heating and cooling operations. The control board depends on a defrost sensor located near the condenser to verify when to begin.
Simple signals the defrost sensor board will have to be replaced
- The defrost feature never kicks in despite the fact that there is quite a bit frost on the external unit
- The whole system may stop running for the simple fact of frost blocking the airflow outside
- The main board may show an error number if the defrost board goes out
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