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Lennox 13HPD-060 Defrost Sensor Board
The defrost sensor board determines when or if to start the defrosting phase if necessary, to defrost your outdoor unit. The board depends on a defrost sensor located in the outdoor unit to determine when to begin.
Simple indications of an inadequate defrost sensor board
- The control board may signify an error signal if the defrost control board fails
- Defrost mode never starts despite that there is a large amount frost on the external unit
- The system may not operate due in part to the frost issue
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