Solar Lattice

Fault codes › SMA › Sunny Island 4548-US / 6048-US

SMA SI-US F811

Code
F811
Vendor severity
4
Page
217
ID
fc:sma-sunny-island-us-f811
IRI
https://solarlattice.org/kb/fc/sma-sunny-island-us-f811
Status
active
Also known as
F811, f811, SMA F811
Category
Inverters
Class fault drafted · lead
Production not stated
Clears not stated

Decoded

Reports invalid internal supply voltage; may indicate internal power supply fault.

What can be behind Invalid internal supply voltage

Failure modes that present as the reported condition, and the tests that tell them apart.

Defined in

The manufacturer's own cause and corrective text is not reproduced here.

Same condition on other equipment

KACO new energy
KACO new energy blueplanet TL3 217
SMA
SMA SC-CP-XT 6410, SMA SC-CP-XT 6417, SMA SI-US F810

Claims

defined_in

c1 drafted · lead SI4548-6048-US-BE-en-21W

has_event_class

c2 drafted · lead Fault (device stops or needs intervention)

from the Type column

reports

c3 verified · fact Invalid internal supply voltage

verified by: review-workflowverified on: 2026-10-23

indicates

c4 drafted · lead Internal power supply fault

24 V supply of the Multicluster Box.

applies_to

c5 drafted · lead Sunny Island 4548-US / 6048-US

Data