Display 203 — Communication Error (6 min)

What does 203 mean?

This error indicates a communication failure between the INVERTER and the MAIN MICOM that has lasted for 6 minutes.

• Internal communication fault
• Software or processing error

Click steps to track your progress.

1. 1

   Power cycle the unit: turn off the power supply for at least 30 seconds, then turn it back on.

2. 2

   Ensure the unit's software is up-to-date, if applicable.

3. 3

   If the error persists after a reset, it may indicate an internal hardware or software issue.

4. 4

   Contact customer support or a qualified technician for further diagnosis.