Internal Failure

What does EeRestore mean?

An unspecified internal failure has occurred within the Sunny Boy SB50US-80US-IUS094030 inverter.

• Internal system failure.

Click steps to track your progress.

1. 1

   Verify DC input voltage from the PV array at the inverter's DC input terminals against specified operating range.

2. 2

   Inspect all AC and DC wiring connections at the inverter for tightness, corrosion, and signs of damage or overheating.

3. 3

   Perform a controlled inverter restart by disconnecting AC output first, then all DC inputs, waiting for 5 minutes, and then reconnecting DC inputs followed by AC output.

4. 4

   Check the inverter's internal event log or diagnostic menu via the display or communication interface for additional fault codes or warnings that may clarify the 'internal failure'.