Solar Lattice

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

SMA SI-US W940

Code: W940
Shown as: Warning via SiCom: Battery undertemperature
Vendor severity: 1
Page: 219
ID: fc:sma-sunny-island-us-w940
IRI: https://solarlattice.org/kb/fc/sma-sunny-island-us-w940
Status: active
Also known as: W940, w940, SMA W940, Warning via SiCom: Battery undertemperature
Category: Inverters

Class warning drafted · lead

Production not stated

Clears not stated

Decoded

Reports low battery temperature.

What can be behind Low battery temperature

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

Defined in

SI4548-6048-US-BE-en-21W — SMA · page 219 drafted · lead
- tbl=156.r7 h=d499d43d67b1

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

Same condition on other equipment

SMA: SMA SI-US F924, SMA SI-US F926, SMA SI-US W211, SMA SI-US W942

Claims

`defined_in`

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

SI4548-6048-US-BE-en-21W tbl=156.r7 h=d499d43d67b1

`has_event_class`

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

from the Type column

SI4548-6048-US-BE-en-21W tbl=156.r7 h=d499d43d67b1

`reports`

c3 verified · fact Low battery temperature

SI4548-6048-US-BE-en-21W tbl=156.r7 h=d499d43d67b1

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

`applies_to`

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

SI4548-6048-US-BE-en-21W tbl=156.r7 h=d499d43d67b1

Data