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Fault codes › SMA › Sunny Boy Smart Energy 3.8-11.5-US (SBSEx.x-US-50)

SMA SBSE-US-50 9034

Code: 9034
Shown as: Error in the rapid shutdown system
Page: 117
ID: fc:sma-sbse-us-50-9034
IRI: https://solarlattice.org/kb/fc/sma-sbse-us-50-9034
Status: active
Also known as: 9034, SMA 9034, Error in the rapid shutdown system
Category: Inverters

Class not stated

Production not stated

Clears not stated

Decoded

Reports rapid shutdown failure; look at PV array disconnect switch; confirm with DC voltage measurement; do: inverter settings review, PV switch function check.

What can be behind Rapid shutdown failure

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

Rapid shutdown device failure drafted · lead

Defined in

SBSExx-US-50-BE-en-11 — SMA · page 117 drafted · lead
- sec=11.1.66 h=e4c50c813897
- sec=h742 h=a3877c085030

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

Same condition on other equipment

ABB / FIMER: ABB / FIMER PVS-60-TL E103
SMA: SMA SB-US-41 9034, SMA SBSE-US-50 9038, SMA CORE1-US 9034, SMA CORE1-US 9038, SMA STP-X-US 9034, SMA STP-X-US 9038

Same code in other families

Claims

`defined_in`

c1 drafted · lead SBSExx-US-50-BE-en-11

SBSExx-US-50-BE-en-11 sec=11.1.66 h=e4c50c813897
SBSExx-US-50-BE-en-11 sec=h742 h=a3877c085030

`reports`

c2 drafted · lead Rapid shutdown failure

STP33-62-US-41 ops manual tbl=12.r2 h=a15113bcec60
STP33-62-US-41-BA-en-14 tbl=24.r2 h=7e25a82051cf
SBxx-US-1XP-41-BA-en-12 sec=h435 h=0f9623b7f0ff

`affects`

c3 drafted · lead PV array disconnect switch

STP33-62-US-41 ops manual tbl=12.r2 h=a15113bcec60
STP33-62-US-41-BA-en-14 tbl=24.r2 h=7e25a82051cf
SBxx-US-1XP-41-BA-en-12 sec=h435 h=0f9623b7f0ff

`detected_by`

c4 drafted · lead DC voltage measurement

Standby voltage of switches per string must be below 30 V.

SBxx-US-1XP-41-BA-en-12 sec=h436 h=ab549348ae54
SBSExx-US-50-BE-en-11 sec=h744 h=ab549348ae54
STPxx-US-50-BE-en-14 sec=h628 h=ab549348ae54

review note: support check: partial - The passages say to check the switches' standby voltage is below 30 V, but they don't name DC voltage measurement…

`mitigated_by`

c5 drafted · lead Inverter settings review

Rapid shutdown mode must match the DC disconnection unit used.

SBxx-US-1XP-41-BA-en-12 sec=h436 h=ab549348ae54
SBSExx-US-50-BE-en-11 sec=h744 h=ab549348ae54
STPxx-US-50-BE-en-14 sec=h628 h=ab549348ae54

c6 verified · fact PV switch function check

SBxx-US-1XP-41-BA-en-12 sec=h436 h=ab549348ae54
SBSExx-US-50-BE-en-11 sec=h744 h=ab549348ae54
STPxx-US-50-BE-en-14 sec=h628 h=ab549348ae54

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

`applies_to`

c7 drafted · lead Sunny Boy Smart Energy US-50

SBSExx-US-50-BE-en-11 sec=11.1.66 h=e4c50c813897
SBSExx-US-50-BE-en-11 sec=h742 h=a3877c085030

Data