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Trane PTED120 Defrost Sensor Board
The defrost sensor board instructs the system to activate the defrost sequence which aids to keep the outdoor unit free from frost build-up. The defrost board is influenced by a temperature sensor that can be found near the condenser, in order to agree when the defrost cycle should begin.
What are the indications that my Trane defrost sensor board is dying?
- Defrost mode does not begin especially when there is frost that makes the unit run like crap
- Most systems will stop running for the simple fact of lack of airflow through the outdoor unit
- The primary control board could display an error number if the defrost control board fails
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