112
RCMU error
Fronius · Symo Advanced Manual
What does 112 mean?
An error has been detected in the Residual Current Monitoring Unit (RCMU). This unit is responsible for monitoring leakage currents to ground for safety.
Common Causes
- Internal fault or malfunction of the RCMU circuitry
Repair Steps & Checklist
Click steps to track your progress.
- 1
If this status code keeps recurring, contact your system engineer for further investigation.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fronius Symo Advanced Manual