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Fault codes › Canadian Solar › CSI-50/60/66K-T480GL01-UB

Canadian Solar 50-66K-T480GL01 ARC-FAULT

Code
ARC-FAULT
Page
39
ID
fc:canadian-solar-50-66k-t480gl01-arcfault
IRI
https://solarlattice.org/kb/fc/canadian-solar-50-66k-t480gl01-arcfault
Status
active
Also known as
ARC-FAULT, arcfault, Canadian Solar ARC-FAULT
Category
Inverters
Class fault drafted · lead
Production not stated
Clears after a manual reset drafted · lead

Decoded

Reports arc fault detected; may indicate arc fault; look at DC cable, junction box, DC connector; confirm with visual inspection; do: DC wiring check.

What can be behind Arc fault detected

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 E050, ABB / FIMER PVS-60-TL E050, ABB / FIMER UNO-DM-3.3-5.0-PLUS E050, ABB / FIMER UNO-DM-6.0-PLUS E050
Canadian Solar
Canadian Solar 23-28KTL-CT ARC Protect, Canadian Solar 25-40K-T480GL01 ARC-FAULT, Canadian Solar 25-40KTL-GS-FL ARC-FAULT, Canadian Solar 50-66KTL-GS-FL ARC-FAULT, Canadian Solar 75-100K-T480GL02 ARC-FAULT
Solis
Solis 1P-4G-US ARC-FAULT, Solis RHI-1P-HV ARC-FAULT, Solis S5-GC ARC-FAULT, Solis S6-EH1P ARC-FAULT, Solis S6-EH2P ARC-FAULT, Solis S6-EH3P30-60K ARC-FAULT, Solis S6-EH3P75-150K ARC-FAULT, Solis S6-GC ARC-FAULT, Solis S6-GU ARC-FAULT
Yaskawa Solectria
Yaskawa Solectria PVI-14-20TL Arc Protect, Yaskawa Solectria PVI-25TL-R Arc Protect, Yaskawa Solectria PVI-TL Arc Protect, Yaskawa Solectria XGI-1500 CRIT-4

Same code in other families

Claims

defined_in

c1 drafted · lead CSI Installation Manual 50-66K T480GL01-UB LSW USA V1.1

reports

c2 drafted · lead Arc fault detected

indicates

c3 verified · fact Arc fault

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

affects

c4 drafted · lead DC cable

c5 drafted · lead Junction box

c6 drafted · lead DC connector

review note: support check: partial - Solution says to inspect cable connections, which only loosely implies DC connectors; connectors are not named.

detected_by

c7 drafted · lead Visual inspection

mitigated_by

c8 drafted · lead DC wiring check

has_recovery

c9 drafted · lead Manual reset (operator restarts or acknowledges)

Reset after inspecting DC wiring; replace inverter if it persists.

has_event_class

c10 drafted · lead Fault (device stops or needs intervention)

review note: support check: partial - Row appears in the table titled Fault messages but doesn't state device behavior; fault class only implied by table title.

applies_to

c11 drafted · lead CSI-50/60/66K-T480GL01-UB

Data