Solar Lattice

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

SMA SI-US W608

Code: W608
Shown as: Transfer relay does not open slave 3
Vendor severity: 1
Page: 214
ID: fc:sma-sunny-island-us-w608
IRI: https://solarlattice.org/kb/fc/sma-sunny-island-us-w608
Status: active
Also known as: W608, w608, SMA W608, Transfer relay does not open slave 3
Category: Inverters

Class warning drafted · lead

Production not stated

Clears not stated

Decoded

May indicate relay failure; look at transfer relay.

Defined in

SI4548-6048-US-BE-en-21W — SMA · page 214 drafted · lead
- tbl=149.r4 h=355d9785edcd

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

Claims

`defined_in`

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

SI4548-6048-US-BE-en-21W tbl=149.r4 h=355d9785edcd

`has_event_class`

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

from the Type column

SI4548-6048-US-BE-en-21W tbl=149.r4 h=355d9785edcd

`indicates`

c3 verified · fact Relay failure

On slave device 3.

SI4548-6048-US-BE-en-21W tbl=149.r4 h=355d9785edcd

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

`affects`

c4 verified · fact Transfer relay

SI4548-6048-US-BE-en-21W tbl=149.r4 h=355d9785edcd

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

`applies_to`

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

SI4548-6048-US-BE-en-21W tbl=149.r4 h=355d9785edcd

Data