SMA SUNNY HOME MANAGER - Manual (Page 128)

15 Troubleshooting SMA Solar Technology AG
128 HoMan_Portal-BA-en-17 User Manual
Message in the system
logbook:
EM communication: An
internal error has occurred
(error number: XXXX* ) A software error has occurred on the Sunny Home Manager.
Corrective measures:
• Restart the Sunny Home Manager. Perform the following
steps:
• If the Sunny Home Manger is supplied with voltage via
a plug-in power supply, unplug the plug-in power
supply from the outlet, wait three seconds and then plug
the plug-in power supply back into the outlet.
• If the Sunny Home Manager is supplied with voltage
via a top-hat rail power supply:
Danger to life due to electric shock
Lethal voltages are present at the connection point of the
utility grid.
• Disconnect the connection point from the utility grid via
the separator (e.g. distribution board).
• Unplug the connection plug of the top-hat rail power
supply on the Sunny Home Manager from the pin
connector, wait three seconds and then plug the
connection plug back in.
• Reconnect the connection point to the utility grid via the
separator.
* XXXX is a placeholder for the respective four-digit error number.
Problem Cause and corrective measures