Solar Lattice

Fault codes › Solis › Solis-1P(3.6-10)K-4G-US

Solis 1P-4G-US UN-G-F

Code
UN-G-F
Shown as
Under Grid Frequency
Page
61
ID
fc:solis-1p-4g-us-ungf
IRI
https://solarlattice.org/kb/fc/solis-1p-4g-us-ungf
Status
active
Also known as
UN-G-F, ungf, Solis UN-G-F, Under Grid Frequency
Category
Inverters
Class not stated
Production not stated
Clears not stated

Decoded

Reports grid underfrequency; confirm with grid frequency measurement; do: grid settings check, utility company consultation, inverter restart.

What can be behind Grid underfrequency

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 W007, ABB / FIMER PVS-60-TL W007, ABB / FIMER UNO-DM-3.3-5.0-PLUS W007, ABB / FIMER UNO-DM-6.0-PLUS W007
Canadian Solar
Canadian Solar 185-255K UN-G-F01/02
Fronius
Fronius Galvo 106, Fronius Primo 106, Fronius Symo 106
Huawei
Huawei SUN2000-100KTL-USH0 2037, Huawei SUN2000-25-30KTL-US 305, Huawei SUN2000-45KTL-US-HV-D0 305
KACO new energy
KACO new energy blueplanet TL3 48
SMA
SMA PEAK3-US 0502, SMA SC-CP-XT 0502, SMA SC-CP-XT 0504, SMA SI-US W323, SMA SI-US W324, SMA SI-US W325, SMA SI-US W326
Schneider Electric
Schneider Electric CL125 009
Solis
Solis 3P-5G-US UN-G-F01/02, Solis RHI-1P-HV UN-G-F01/02, Solis S6-EH1P UN-G-F01/02, Solis S6-EH2P LmtByUnFr, Solis S6-EH2P UN-G-F01, Solis S6-EH2P UN-G-F02, Solis S6-EH3P30-60K LmtByUnFr, Solis S6-EH3P30-60K UN-G-F01, Solis S6-EH3P30-60K UN-G-F02, Solis S6-EH3P75-150K LmtByUnFr, Solis S6-EH3P75-150K UN-G-F01, Solis S6-EH3P75-150K UN-G-F02, Solis S6-GC UN-G-F, Solis S6-GU UN-G-F
Sungrow
Sungrow SG-CX-US 009, Sungrow SG200HX 009, Sungrow SG250HX 9, Sungrow SG350HX 009
Yaskawa Solectria
Yaskawa Solectria SGI-XTM Fac Low, Yaskawa Solectria SGI-XTM Fac Very Low, Yaskawa Solectria XGI-1500-1MW WARN-5, Yaskawa Solectria XGI-1500-1MW WARN-6, Yaskawa Solectria XGI-1500-DCG WARN-5, Yaskawa Solectria XGI-1500-DCG WARN-6, Yaskawa Solectria XGI-1500 WARN-5, Yaskawa Solectria XGI-1500 WARN-6

Same code in other families

Claims

defined_in

c1 drafted · lead Solis_Manual_Solis-1P(6-10)K-4G-US_PLUS_V2.1_20250804

c2 drafted · lead Solis_Manual_(3.6-5)K_4G_PLUS_LW_USA_03212023

reports

c3 drafted · lead Grid underfrequency

detected_by

c4 drafted · lead Grid frequency measurement

mitigated_by

c5 drafted · lead Grid settings check

c6 drafted · lead Utility company consultation

Lower frequency limit adjusted only with utility permission.

c7 drafted · lead Inverter restart

applies_to

c8 drafted · lead Solis-1P(3.6-10)K-4G-US

Data