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Fault codes › Solis › Solis S6-EH3P(75-150)K10-NV-YD-H-US

Solis S6-EH3P75-150K G-F-GLU

Code
G-F-GLU
Shown as
Grid voltage frequency f luctuat ion
Page
116
ID
fc:solis-s6-eh3p-75-150k-us-gfglu
IRI
https://solarlattice.org/kb/fc/solis-s6-eh3p-75-150k-us-gfglu
Status
active
Also known as
G-F-GLU, gfglu, Solis G-F-GLU, Grid voltage frequency f luctuat ion
Category
Inverters
Class fault verified · fact
Production not stated
Clears not stated

Decoded

Reports grid instability; look at AC cable; confirm with grid frequency measurement; do: AC connection check, inverter restart.

What can be behind Grid instability

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 W003, ABB / FIMER PVS-60-TL W003, ABB / FIMER TRIO-20.0-27.6-TL W003, ABB / FIMER UNO-DM-3.3-5.0-PLUS W003, ABB / FIMER UNO-DM-6.0-PLUS W003
Canadian Solar
Canadian Solar 125K-T600GL02 GRID-INTF, Canadian Solar 125KTL-GS-E GRID-INTF, Canadian Solar 185-255K GRID-INTF01/02, Canadian Solar 25-40K-T480GL01 GRID-INTF, Canadian Solar 25-40KTL-GS-FL GRID-INTF, Canadian Solar 50-66K-T480GL01 GRID-INTF, Canadian Solar 50-66KTL-GS-FL GRID-INTF, Canadian Solar 75-100K-T480GL02 GRID-INTF
Huawei
Huawei SUN2000-100KTL-USH0 2038
SMA
SMA SB-US-41 404, SMA SBSE-US-50 404, SMA STP-TL-US 404, SMA STP-X-US 404, SMA SC-CP-XT 404
Solis
Solis 1P-4G-US GRID-INTF, Solis 3P-5G-US GRID-INTF01/02, Solis RHI-1P-HV GRID-INTF01/02, Solis S5-GC GRID-INTF, Solis S6-EH1P GRID-INTF01/02, Solis S6-EH2P G-F-GLU, Solis S6-EH2P GRID-INTF, Solis S6-EH2P GRID-INTF02, Solis S6-EH3P30-60K G-F-GLU, Solis S6-EH3P30-60K GRID-INTF, Solis S6-EH3P30-60K GRID-INTF02, Solis S6-EH3P75-150K GRID-INTF, Solis S6-EH3P75-150K GRID-INTF02, Solis S6-GC GRID-INTF, Solis S6-GU GRID-INTF

Same code in other families

Claims

defined_in

c1 drafted · lead Solis_Manual_S6-EH3P(75-150)K10-NV-YD-H-US_V1.0

reports

c2 drafted · lead Grid instability

Grid voltage frequency fluctuation.

has_event_class

c3 verified · fact Fault (device stops or needs intervention)

verified by: review-workflowverified on: 2026-10-23review note: support check: partial - Classification as fault isn't explicitly stated in the row.

detected_by

c4 drafted · lead Grid frequency measurement

review note: support check: partial - Frequency fluctuation implies frequency monitoring but the detection method isn't stated.

affects

c5 drafted · lead AC cable

mitigated_by

c6 drafted · lead AC connection check

c7 drafted · lead Inverter restart

Restart after grid and cabling checks.

applies_to

c8 drafted · lead Solis S6-EH3P(75-150)K10-NV-YD-H-US

Data