Fronius · Perfect Charging
The temperature sensor located directly on the main primary circuit board (PCB) is detected as defective. This indicates a fault with a critical integrated sensor responsible for monitoring the temperature of the primary circuit board itself.
Click steps to track your progress.
Perform diagnostic checks on the primary circuit board to assess the functionality of the integrated sensor.
If the sensor is integrated into the PCB and unrepairable, the primary circuit board may require repair or replacement.
Compare the sensor's readings with an external temperature probe if the sensor is accessible.