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Trane TTZ048A100A1 Defrost Sensor Board
The defrost sensor control board initiates an important defrosting cycle if necessary, to remove frost build-up that may accumulate. The defrost board relies on a sensor located near the condenser to decide when to begin.
Some warnings your defrost board needs replacing ASAP
- The system may stop functioning at all because of the safety features installed
- The main circuit board may throw a particular error code referring to a failing defrost control board
- The defrost sequence refuses to initiate even when there is a large quantity of frost on the external unit
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