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Lennox HPXA12-030 Defrost Sensor Board
The defrost sensor board determines when or if to start an important defrosting cycle which helps to continue normal heating and cooling operations. The board is influenced by a defrost sensor located near the condenser to agree when to begin.
How can I tell if my defrost board needs replacing?
- The defrost sequence will not kick in especially when there is frost on the external unit
- The main board may throw an error signal when the defrost control board refuses to initialize properly
- The HVAC system could end up not running at all because of the safety features installed
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