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International Comfort Products PGAD36D1K1 Defrost Sensor Board
The defrost sensor board will determine when to initiate the defrost sequence in order to continue normal heating and cooling operations. The control board looks to a temperature sensor located near the condenser to verify when to begin.
Simple indications of an ineffective defrost board
- The system will cease to operate due in part to the safety features installed
- The main circuit board could display an error signal produced by a bad defrost control board
- The defrost feature will not kick in even though there is a lot of frost on the external unit
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