Fronius · Perfect Charging
The temperature sensor associated with primary circuit module 2, typically located at the bottom section of the power stage, is detected as defective. This compromises critical temperature monitoring within the charger's input power conversion stage.
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Verify the integrity of the wiring connections leading to temperature sensor module 2.
Measure the resistance of the sensor across its terminals and compare it against specified values for ambient temperature.
Replace temperature sensor module 2 if it is confirmed defective or damaged.