RCMU sensor faulty

What does 474 mean?

The sensor within the Residual Current Monitoring Unit (RCMU) is faulty. This prevents accurate monitoring of leakage currents, compromising a critical safety function.

• Internal hardware failure of the RCMU sensor component

Click steps to track your progress.

1. 1

   If this status code keeps recurring, contact your system engineer for diagnosis and replacement of the RCMU sensor.