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International Comfort Products H8DNL100F14A1 Defrost Sensor Board
The defrost sensor board initiates the defrost sequence in order to keep the outdoor unit free from frost build-up. The defrost board depends on a defrost sensor located near the condenser to verify when to initiate the defrosting cycle.
General indicators that your your defrost board is going to die
- AC and heating system could stop operating at all because of the fact that there is too much frost
- Defrosting never runs despite that there is a large amount frost on the outdoor unit
- The main control board may show an error of some type if the defrost board goes out
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