After paralleling two MultiPlus using the VE Quick Configure with MK3-VE-Bus interface, the master unit made a loud rattling sound for one second then shut down with the red alarm led on. The GX-Touch displays a « converter overload » message.
Since then, both units do not start inverter mode correctly (red led continuously on).
Before paralleling both units worked fine separately.
Note that both units have the same PN: CMP122200000
Disconnect ac out on both units and try again