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International Comfort Products HAC224GKA4 Defrost Sensor Board
The defrost sensor control board will begin the defrost sequence if necessary, to keep your outdoor unit from plugging up. The control board is relayed information from a specific sensor that can be found near the condenser, in order to decide when to initiate the defrosting cycle.
Important clues of a weak defrost board
- The primary control board may issue a specific error code if the defrost board goes out
- The defrost sequence has not run for a while despite the fact that there is quite a bit frost that has built up
- The HVAC system could cease to function for the simple fact of the safety issue that the frost poses
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