Invert Module Fault

What does 202 mean?

A major fault where abnormal external conditions have triggered protection in the SUN2000's converter circuit. This can be due to grid voltage drops, short circuits causing high output current, or abnormal grid frequency, leading to inverter shutdown.

• A sharp drop in grid voltage or a short-circuit has occurred, resulting in high output current from the SUN2000 (Reason ID = 4).
• A sharp drop in grid voltage or a short-circuit has occurred, resulting in a fault in the voltage check circuit of the SUN2000 (Reason ID = 13).
• A sharp drop in grid voltage or a short-circuit has occurred, resulting in instantaneous high output current from the SUN2000 (Reason ID = 14).
• The grid DC current exceeds the allowed range (Reason ID = 16).
• The grid voltage or frequency is abnormal (Reason ID = 17).
• The SUN2000 output short-circuits, leading to a sharp increase in output current (Reason ID = 20).

Click steps to track your progress.

1. 1

   For Reason ID = 20, check whether the SUN2000 output cables are short-circuited and rectify any detected fault.

2. 2

   For Reason IDs 4, 13, 14, 16, or 17, observe if the SUN2000 automatically reverts to normal operating status after external working conditions normalize.