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Fault codes › Sungrow › Sungrow SG250HX

Sungrow SG250HX 17

Code
17
Shown as
Grid Voltage Imbalance
Page
92
ID
fc:sungrow-sg250hx-17
IRI
https://solarlattice.org/kb/fc/sungrow-sg250hx-17
Status
active
Also known as
17, Sungrow 17, Grid Voltage Imbalance
Category
Inverters
Class fault drafted · lead
Production stops verified · fact
Clears by itself drafted · lead

Decoded

Reports phase imbalance; confirm with grid voltage measurement; do: inverter parameter adjustment.

What can be behind Phase imbalance

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 E032, ABB / FIMER PVS-60-TL E032, ABB / FIMER TRIO-20.0-27.6-TL E032, ABB / FIMER UNO-DM-3.3-5.0-PLUS E032, ABB / FIMER UNO-DM-6.0-PLUS E032
CPS
CPS SCA50-100K-T Protect0250, CPS SCA50-100K-T Protect0270
Huawei
Huawei SUN2000-100KTL-USH0 2035, Huawei SUN2000-25-30KTL-US 301, Huawei SUN2000-45KTL-US-HV-D0 301
KACO new energy
KACO new energy blueplanet TL3 227
Schneider Electric
Schneider Electric CL125 017, Schneider Electric CL125 042
Solis
Solis S6-EH2P G-PHASE, Solis S6-EH3P30-60K G-PHASE, Solis S6-EH3P75-150K G-PHASE, Solis S6-GC G-PHASE, Solis S6-GU G-PHASE
Sungrow
Sungrow SG-CX-US 017, Sungrow SG200HX 017, Sungrow SG350HX 017

Same code in other families

Claims

defined_in

c1 drafted · lead SG250HX-US-UEN-Ver17-202203

reports

c2 drafted · lead Phase imbalance

has_event_class

c3 drafted · lead Fault (device stops or needs intervention)

review note: support check: partial - The passages show it is a listed fault code in the troubleshooting table, but they give no explicit fault classification.

has_production_effect

c4 verified · fact Trip (production stops)

verified by: review-workflowverified on: 2026-10-20review note: support check: partial - Reconnection after the grid returns to normal implies the inverter disconnected, but the passages don't explicitly state that production stops.

has_recovery

c5 drafted · lead Auto-reset (clears by itself)

If repeated, measure phases, adjust imbalance parameter if within limits, then service.

detected_by

c6 drafted · lead Grid voltage measurement

mitigated_by

c7 drafted · lead Inverter parameter adjustment

Only when phase difference is within utility-permitted range.

applies_to

c8 drafted · lead Sungrow SG250HX-US

Data