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Lennox 13ACX-030 Defrost Sensor Board
The defrost control board instructs the outdoor unit to begin the defrosting phase if necessary, to get rid of the frost that collects on the outdoor unit. The defrost sensor board is relayed information from a sensor that can be found near the condenser, in order to make the decision on when to begin.
Signals of a bad outdoor defrost sensor board
- Air conditioning may stop working for the simple fact of way too much frost build-up
- The HVAC system control board may signify an alphanumeric error code when a defrost board fails to initialize
- Defrost session never begins even though there is a lot of frost on the outdoor unit
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