Solar Lattice

Fault codes › Canadian Solar › CSI-185K-T600GL02/03-U / CSI-255K-T800GL02/03-U

Canadian Solar 185-255K DCinj-FAULT

Code
DCinj-FAULT
Shown as
High DC injection current
Page
32
ID
fc:canadian-solar-185-255k-dcinjfault
IRI
https://solarlattice.org/kb/fc/canadian-solar-185-255k-dcinjfault
Status
active
Also known as
DCinj-FAULT, dcinjfault, Canadian Solar DCinj-FAULT, High DC injection current
Category
Inverters
Class fault drafted · lead
Production not stated
Clears after a manual reset drafted · lead

Decoded

Reports high DC injection; do: inverter restart, contact system installer.

What can be behind High DC injection

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

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
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, Solis S6-GU DCInj-Fault
Yaskawa Solectria
Yaskawa Solectria PVI-25TL-R Protect0170

Claims

defined_in

c1 drafted · lead CSI Installation Manual 185-255K USA V1.1 20211119

reports

c2 drafted · lead High DC injection

mitigated_by

c3 verified · fact Inverter restart

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

c4 drafted · lead Contact system installer

has_event_class

c5 drafted · lead Fault (device stops or needs intervention)

review note: support check: partial - The row is in a 'Fault message' table, but it doesn't say the device stops or needs intervention, so the…

has_recovery

c6 drafted · lead Manual reset (operator restarts or acknowledges)

Restart first; contact installer if it persists.

review note: support check: partial - A restart or contacting the installer is stated, but it doesn't say the fault clears by manual reset; restart is…

applies_to

c7 drafted · lead CSI-185K-T600GL02/03-U / CSI-255K-T800GL02/03-U

Data