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Solis S6-GU DCInj-Fault

Code: DCInj-Fault
Shown as: Excessive DC component
Page: 49
ID: fc:solis-s6-gu-ehv-us-dcinjfault
IRI: https://solarlattice.org/kb/fc/solis-s6-gu-ehv-us-dcinjfault
Status: active
Also known as: DCInj-Fault, dcinjfault, Solis DCInj-Fault, Excessive DC component
Category: Inverters

Class fault drafted · lead

Production not stated

Clears after a manual reset verified · fact

Decoded

Reports high DC injection; look at AC cable; do: AC connection check, inverter restart, inverter replacement.

What can be behind High DC injection

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

Defined in

Solis_Manual_S6-GU(250-350)K-EHV-USA_PE-MN-0001-R00 — Solis (Ginlong) · page 49 drafted · lead
- tbl=14.r4 h=13f3370757f3

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

Same condition on other equipment

ABB / FIMER: ABB / FIMER PVS-166-175-TL E023, ABB / FIMER PVS-60-TL E023, ABB / FIMER TRIO-20.0-27.6-TL E023, ABB / FIMER UNO-DM-3.3-5.0-PLUS E023, ABB / FIMER UNO-DM-6.0-PLUS E023
CPS: CPS SCA25KTL-208 Protect0170, CPS SCA25KTL-480 Protect0170, CPS SCA36KTL Protect0170, CPS SCA50-100K-T Protect0170, CPS SCA50-60KTL Protect0170, CPS SCH100-125KTL Protect0170, CPS SCH125KTL-AIO Protect0170, CPS SCH200-250K-T Protect0170, CPS SCH275KTL Protect0170, CPS SCH350KTL Protect0170
Canadian Solar: Canadian Solar 185-255K DCinj-FAULT
Fronius: Fronius Galvo 408, Fronius Primo 408, Fronius Symo 408
Huawei: Huawei SUN2000-100KTL-USH0 2040, Huawei SUN2000-25-30KTL-US 202, Huawei SUN2000-45KTL-US-HV-D0 202
KACO new energy: KACO new energy blueplanet TL3 33
SMA: SMA SB-US-40 601, SMA SB-US-41 601, SMA SBSE-US-50 601, SMA PEAK3-US 601, SMA CORE1-US 601, SMA STP-TL-US 601, SMA STP-X-US 601
Schneider Electric: Schneider Electric CL125 011
Solis: Solis 3P-5G-US DCInj-Fault, Solis RHI-1P-HV DCInj-Fault, Solis S6-EH1P DCInj-Fault, Solis S6-EH2P DCInj-Fault, Solis S6-EH3P30-60K DCInj-Fault, Solis S6-EH3P75-150K DCInj-Fault, Solis S6-GC DCInj-Fault
Yaskawa Solectria: Yaskawa Solectria PVI-25TL-R Protect0170

Same code in other families

Claims

`defined_in`

c1 drafted · lead Solis_Manual_S6-GU(250-350)K-EHV-USA_PE-MN-0001-R00

Solis_Manual_S6-GU(250-350)K-EHV-USA_PE-MN-0001-R00 tbl=14.r4 h=13f3370757f3

`reports`

c2 drafted · lead High DC injection

Solis S6-GC30K-LV-US Manual V1.2 tbl=15.r4 h=13f3370757f3
Solis_Manual_3P(125-255)K_5G_USA_V1.9(20230620) tbl=15.r7 h=b8dccd8805ed
Solis_Manual_RHI-1P(5-10)K-HV_USA_V1.1 tbl=9.r3 h=15d7a6b32058
Solis_manual_S6-EH2P(9.6-16)K-SV-YD-L-US_V2.7_20260305 tbl=18.r1 h=69c05042a23a
Solis_Manual_S6-EH3P(30-60)K-NV-YD-H-US(21A)_V1_0_20260908 tbl=28.r1 h=343ddc0a98d9
Solis_Manual_S6-EH3P(75-150)K10-NV-YD-H-US_V1.0 tbl=28.r17 h=343ddc0a98d9

`affects`

c3 drafted · lead AC cable

Solis_manual_S6-EH2P(9.6-16)K-SV-YD-L-US_V2.7_20260305 tbl=18.r1 h=69c05042a23a
Solis_Manual_S6-EH3P(30-60)K-NV-YD-H-US(21A)_V1_0_20260908 tbl=28.r1 h=343ddc0a98d9
Solis_Manual_S6-EH3P(75-150)K10-NV-YD-H-US_V1.0 tbl=28.r17 h=343ddc0a98d9

review note: support check: partial - Passages advise checking AC cable connection, but don't state the fault affects the AC cable.

`mitigated_by`

c4 verified · fact AC connection check

Solis_manual_S6-EH2P(9.6-16)K-SV-YD-L-US_V2.7_20260305 tbl=18.r1 h=69c05042a23a
Solis_Manual_S6-EH3P(30-60)K-NV-YD-H-US(21A)_V1_0_20260908 tbl=28.r1 h=343ddc0a98d9
Solis_Manual_S6-EH3P(75-150)K10-NV-YD-H-US_V1.0 tbl=28.r17 h=343ddc0a98d9

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

c5 drafted · lead Inverter restart

Solis S6-GC30K-LV-US Manual V1.2 tbl=15.r4 h=13f3370757f3
Solis_Manual_3P(125-255)K_5G_USA_V1.9(20230620) tbl=15.r7 h=b8dccd8805ed
Solis_Manual_RHI-1P(5-10)K-HV_USA_V1.1 tbl=9.r3 h=15d7a6b32058
Solis_manual_S6-EH2P(9.6-16)K-SV-YD-L-US_V2.7_20260305 tbl=18.r1 h=69c05042a23a
Solis_Manual_S6-EH3P(30-60)K-NV-YD-H-US(21A)_V1_0_20260908 tbl=28.r1 h=343ddc0a98d9
Solis_Manual_S6-EH3P(75-150)K10-NV-YD-H-US_V1.0 tbl=28.r17 h=343ddc0a98d9

c6 drafted · lead Inverter replacement

Solis S6-GC30K-LV-US Manual V1.2 tbl=15.r4 h=13f3370757f3

`has_event_class`

c7 drafted · lead Fault (device stops or needs intervention)

Solis S6-GC30K-LV-US Manual V1.2 tbl=15.r4 h=13f3370757f3
Solis_Manual_3P(125-255)K_5G_USA_V1.9(20230620) tbl=15.r7 h=b8dccd8805ed
Solis_Manual_RHI-1P(5-10)K-HV_USA_V1.1 tbl=9.r3 h=15d7a6b32058
Solis_manual_S6-EH2P(9.6-16)K-SV-YD-L-US_V2.7_20260305 tbl=18.r1 h=69c05042a23a
Solis_Manual_S6-EH3P(30-60)K-NV-YD-H-US(21A)_V1_0_20260908 tbl=28.r1 h=343ddc0a98d9
Solis_Manual_S6-EH3P(75-150)K10-NV-YD-H-US_V1.0 tbl=28.r17 h=343ddc0a98d9

`has_recovery`

c8 verified · fact Manual reset (operator restarts or acknowledges)

Restart first; installer contact or inverter replacement if it persists.

Solis S6-GC30K-LV-US Manual V1.2 tbl=15.r4 h=13f3370757f3
Solis_Manual_3P(125-255)K_5G_USA_V1.9(20230620) tbl=15.r7 h=b8dccd8805ed
Solis_Manual_RHI-1P(5-10)K-HV_USA_V1.1 tbl=9.r3 h=15d7a6b32058

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

`applies_to`

c9 drafted · lead Solis S6-GU(250-350)K-EHV-US

Solis_Manual_S6-GU(250-350)K-EHV-USA_PE-MN-0001-R00 tbl=14.r4 h=13f3370757f3

Data