Solar Lattice

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

SMA SI-US W944

Code
W944
Vendor severity
1
Page
219
ID
fc:sma-sunny-island-us-w944
IRI
https://solarlattice.org/kb/fc/sma-sunny-island-us-w944
Status
active
Also known as
W944, w944, SMA W944
Category
Inverters
Class warning drafted · lead
Production not stated
Clears not stated

Decoded

Reports excessive battery charging current.

What can be behind Excessive battery charging current

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

SMA
SMA SI-US F927, SMA SI-US F928, SMA SI-US W943

Claims

defined_in

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

has_event_class

c2 drafted · lead Warning (device continues, a condition is flagged)

from the Type column

reports

c3 verified · fact Excessive battery charging current

Applies while the battery is in charge mode.

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

applies_to

c4 drafted · lead Sunny Island 4548-US / 6048-US

Data