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Sungrow SG-CX-US 548-563

Code
548-563
Shown as
String x output current anomaly
Page
98
ID
fc:sungrow-sg-cx-us-548-563
IRI
https://solarlattice.org/kb/fc/sungrow-sg-cx-us-548-563
Status
active
Also known as
548-563, Sungrow 548-563, String x output current anomaly
Category
Inverters
Class warning drafted · lead
Production not stated
Clears not stated

Decoded

Reports abnormal PV input; look at PV array; confirm with string current measurement; do: avoiding partial shading, manual cleaning, DC fuse replacement.

What can be behind Abnormal PV input

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

CPS
CPS SCA50-100K-T Fault0000-0150, CPS SCA50-100K-T Fault1000-1070, CPS SCA50-100K-T Fault5000, CPS SCA50-100K-T Protect0380
Huawei
Huawei SUN2000-45KTL-US-HV-D0 413
SMA
SMA SBSE-US-50 6801, SMA SBSE-US-50 6901, SMA STP-TL-US 6801-6802, SMA STP-TL-US 6901-6902, SMA SI-US W854, SMA SI-US W864, SMA SI-US W874, SMA SI-US W884
Sungrow
Sungrow SG-CX-US 220-227, Sungrow SG-CX-US 580-587, Sungrow SG-CX-US 078-081, Sungrow SG200HX 548-563, Sungrow SG200HX 580-595, Sungrow SG250HX 548-563, Sungrow SG250HX 580-595, Sungrow SG350HX 548-563, Sungrow SG350HX 580-595

Same code in other families

Claims

defined_in

c1 drafted · lead Sungrow 36 60CX-US IOM

c2 drafted · lead Sungrow SG36_60CX-US User Manual Ver17 202411

reports

c3 drafted · lead Abnormal PV input

affects

c4 drafted · lead PV array

detected_by

c5 drafted · lead String current measurement

review note: support check: partial - u24 says to check the voltage and current of the inverter to determine the cause, but not a string current…

mitigated_by

c6 verified · fact Avoiding partial shading

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

c7 drafted · lead Manual cleaning

c8 drafted · lead DC fuse replacement

has_event_class

c9 drafted · lead Warning (device continues, a condition is flagged)

applies_to

c10 drafted · lead Sungrow SG36/60CX-US

Data