Current sensor calibration timeout

On a Fronius Symo inverter this symptom shows as status code 314, which reports that current sensor calibration timed out. The inverter stops feeding the grid for a short time and then returns to its startup phase, so monitoring data show a brief drop in AC power followed by a restart. The same manual lists a separate code, 315, for an AC current sensor fault. If that code also appears, the problem is more likely the sensor itself than a single calibration timeout. Other inverter makers report similar problems as a failed current sensor offset calibration, or as a current sensor that is not connected, not available or defective. When a calibration error keeps coming back, the manufacturer's service team has to find the cause, so contact service instead of trying to repair the sensor in the field.

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• sentence 3: support check: partial - Code 315 as AC current sensor fault is listed, but the inference that it indicates the sensor itself is more likely the problem is not in the passage.
• sentence 5: support check: partial - Passages say the cause must be determined by Service and to contact Service, but nothing about recurring errors or not repairing the sensor in the field. -->