Cause : Multi-parallel circuit comes when fault in connection with the multi-parallel circuit or board ImP1 has been detected. This fault suggests a problem with the communication or functionality within the multi-parallel configuration.

The F062 fault in siemens master drive indicates a multi-parallel circuit fault. This fault message signifies an issue within a system where multiple Siemens Masterdrive inverters are connected and operating in parallel to control a single motor.

1. Check ImPI or communications card and replace, if necessary. 
2. Check configuration of multi-parallel circuit.
3. Check parameterization.
4. Replace CU.
5. Replace ImPI.