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Fault codes › Solis › Solis S6-EH1P(3.8-11.4)K-H-US

Solis S6-EH1P UN-BUS01/02

Code: UN-BUS01/02
Shown as: Under DC bus voltage
Page: 74
ID: fc:solis-s6-eh1p-h-us-unbus0102
IRI: https://solarlattice.org/kb/fc/solis-s6-eh1p-h-us-unbus0102
Status: active
Also known as: UN-BUS01/02, unbus0102, Solis UN-BUS01/02, Under DC bus voltage
Category: Inverters

Class fault drafted · lead

Production not stated

Clears not stated

Decoded

Reports DC bus undervoltage; look at inverter choke inductor; do: wiring and terminal check.

What can be behind DC bus undervoltage

Failure modes that present as the reported condition, and the tests that tell them apart.

Defined in

Solis_Manual_S6-EH1P(3.8-11.4)K-H-US_v.5.6_20260413 — Solis (Ginlong) · page 74 drafted · lead
- tbl=15.r1 h=90d9922920d3

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 E010, ABB / FIMER PVS-166-175-TL W011, ABB / FIMER PVS-60-TL E010, ABB / FIMER PVS-60-TL W011, ABB / FIMER TRIO-20.0-27.6-TL E010, ABB / FIMER TRIO-20.0-27.6-TL W011, ABB / FIMER UNO-DM-3.3-5.0-PLUS E010, ABB / FIMER UNO-DM-3.3-5.0-PLUS W011, ABB / FIMER UNO-DM-6.0-PLUS E010, ABB / FIMER UNO-DM-6.0-PLUS W011
CPS: CPS SCA50-100K-T Fault6080
Canadian Solar: Canadian Solar 125K-T600GL02 UN-BUS, Canadian Solar 125KTL-GS-E UN-BUS, Canadian Solar 185-255K UN-BUS01/02, Canadian Solar 25-40K-T480GL01 UN-BUS, Canadian Solar 25-40KTL-GS-FL UN-BUS, Canadian Solar 50-66K-T480GL01 UN-BUS, Canadian Solar 50-66KTL-GS-FL UN-BUS, Canadian Solar 75-100K-T480GL02 UN-BUS
Fronius: Fronius Primo 443, Fronius Symo 443
KACO new energy: KACO new energy blueplanet TL3 84
Solis: Solis 1P-4G-US UN-BUS, Solis 3P-5G-US UN-BUS01/02, Solis RHI-1P-HV UN-BUS01/02, Solis S5-GC UN-BUS, Solis S6-EH2P UN-BUS01, Solis S6-EH3P30-60K UN-BUS01, Solis S6-EH3P75-150K UN-BUS01, Solis S6-GC UN-BUS, Solis S6-GU UN-BUS

Same code in other families

Claims

`defined_in`

c1 drafted · lead Solis_Manual_S6-EH1P(3.8-11.4)K-H-US_v.5.6_20260413

Solis_Manual_S6-EH1P(3.8-11.4)K-H-US_v.5.6_20260413 tbl=15.r1 h=90d9922920d3

`reports`

c2 drafted · lead DC bus undervoltage

Solis_Manual_3P(125-255)K_5G_USA_V1.9(20230620) tbl=14.r11 h=f45a9c4d23db
Solis_Manual_RHI-1P(5-10)K-HV_USA_V1.1 tbl=11.r1 h=90d9922920d3

`affects`

c3 drafted · lead Inverter choke inductor

Solis_Manual_3P(125-255)K_5G_USA_V1.9(20230620) tbl=14.r11 h=f45a9c4d23db
Solis_Manual_RHI-1P(5-10)K-HV_USA_V1.1 tbl=11.r1 h=90d9922920d3

`mitigated_by`

c4 drafted · lead Wiring and terminal check

Inductor and driver connections inside the inverter.

Solis_Manual_3P(125-255)K_5G_USA_V1.9(20230620) tbl=14.r11 h=f45a9c4d23db
Solis_Manual_RHI-1P(5-10)K-HV_USA_V1.1 tbl=11.r1 h=90d9922920d3

`has_event_class`

c5 drafted · lead Fault (device stops or needs intervention)

Solis_Manual_RHI-1P(5-10)K-HV_USA_V1.1 tbl=11.r1 h=90d9922920d3
Solis_Manual_RHI-1P(5-10)K-HV_USA_V1.1 tbl=11 h=76c7a1a42932

`applies_to`

c6 drafted · lead Solis S6-EH1P(3.8-11.4)K-H-US

Solis_Manual_S6-EH1P(3.8-11.4)K-H-US_v.5.6_20260413 tbl=15.r1 h=90d9922920d3

Data