Solar Lattice

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

SMA SI-US F809

Code
F809
Shown as
Error Q10 contactor (load shedding)
Vendor severity
4
Page
217
ID
fc:sma-sunny-island-us-f809
IRI
https://solarlattice.org/kb/fc/sma-sunny-island-us-f809
Status
active
Also known as
F809, f809, SMA F809, Error Q10 contactor (load shedding)
Category
Inverters
Class fault drafted · lead
Production not stated
Clears not stated

Decoded

Reports switching device status fault; look at AC contactor.

What can be behind Switching device status fault

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

Fronius
Fronius Galvo 457, Fronius Primo 457, Fronius Symo 457
KACO new energy
KACO new energy blueplanet TL3 125
SMA
SMA SC-CP-XT 7704, SMA SC-CP-XT 7707, SMA SC-CP-XT 7708, SMA SI-US F801, SMA SI-US F816, SMA SI-US F817, SMA SI-US W808, SMA SI-US W815, SMA SI-US W824
Yaskawa Solectria
Yaskawa Solectria SGI-XTM Contactor Fail, Yaskawa Solectria XGI-1500-1MW CRIT-5, Yaskawa Solectria XGI-1500 CRIT-5, Yaskawa Solectria XGI-1500-DCG CRIT-5

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 drafted · lead Switching device status fault

Load-shedding contactor Q10 reported in error.

affects

c4 verified · fact AC contactor

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

applies_to

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

Data