Manufacturer Diagnostics Manual
Verified OEM Technical Manual
Fronius Diagnostics & Fault Manuals
High-efficiency SnapINverter and GEN24 Plus hybrid solar systems.
Equipment Models
Hardware families produced by Fronius
Indexed Error Codes for Fronius
Machine-verified error code diagnostic walkthroughs
CODE State 1030
Symo GEN24 Plus
High
RCMU Residual Current Limit Exceeded
State 1030 triggers when the internal Residual Current Monitoring Unit (RCMU) detects leakage current exceeding statutory thresholds (typically >30mA continuous or sharp differential spikes up to 300mA) flowing to ground, disconnecting the inverter from the grid to prevent electric shock or fire.
⏱ 30-60 Mins
Troubleshoot →