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Fault codes › CPS › CPS SCA100K-T-US-480 / SCA50K-T-US-208

CPS SCA50-100K-T Protect0390

Code: Protect0390
Shown as: Open Loop SelfChk Prot
Vendor severity: Protection
Page: 138
ID: fc:chint-sca-50-100k-t-protect390
IRI: https://solarlattice.org/kb/fc/chint-sca-50-100k-t-protect390
Status: active
Also known as: Protect0390, protect390, CPS Protect0390, Open Loop SelfChk Prot
Category: Inverters

Class fault drafted · lead

Production not stated

Clears after a manual reset drafted · lead

Decoded

Reports self-test failure; look at ground fault detection circuit; do: inverter restart.

What can be behind Self-test failure

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

Arc detection board failure verified · fact

Defined in

CPS SCA100K-T-US-480 SCA50K-T-US-208 User Manual Rev 1.0 — CPS (Chint Power Systems) · page 138 drafted · lead
- tbl=56.r1 h=8e8a400c5e90

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 E019, ABB / FIMER PVS-166-175-TL E020, ABB / FIMER PVS-166-175-TL E021, ABB / FIMER PVS-166-175-TL E022, ABB / FIMER PVS-166-175-TL E053, ABB / FIMER PVS-166-175-TL E078, ABB / FIMER PVS-60-TL E103, ABB / FIMER PVS-60-TL E019, ABB / FIMER PVS-60-TL E020, ABB / FIMER PVS-60-TL E021, ABB / FIMER PVS-60-TL E022, ABB / FIMER PVS-60-TL E053, ABB / FIMER PVS-60-TL E078, ABB / FIMER TRIO-20.0-27.6-TL E019, ABB / FIMER TRIO-20.0-27.6-TL E020, ABB / FIMER TRIO-20.0-27.6-TL E021, ABB / FIMER TRIO-20.0-27.6-TL E022, ABB / FIMER UNO-DM-3.3-5.0-PLUS E019, ABB / FIMER UNO-DM-3.3-5.0-PLUS E020, ABB / FIMER UNO-DM-3.3-5.0-PLUS E021, ABB / FIMER UNO-DM-3.3-5.0-PLUS E022, ABB / FIMER UNO-DM-3.3-5.0-PLUS E053, ABB / FIMER UNO-DM-3.3-5.0-PLUS E078, ABB / FIMER UNO-DM-6.0-PLUS E019, ABB / FIMER UNO-DM-6.0-PLUS E020, ABB / FIMER UNO-DM-6.0-PLUS E021, ABB / FIMER UNO-DM-6.0-PLUS E022, ABB / FIMER UNO-DM-6.0-PLUS E053, ABB / FIMER UNO-DM-6.0-PLUS E078
CPS: CPS SCA25KTL-208 Fault0150, CPS SCA25KTL-208 Protect0230, CPS SCA25KTL-480 Fault0150, CPS SCA25KTL-480 Protect0230, CPS SCA36KTL Fault0150, CPS SCA36KTL Protect0230, CPS SCA50-100K-T PFault0140, CPS SCA50-100K-T Protect0230, CPS SCA50-60KTL Fault0150, CPS SCA50-60KTL Protect0230, CPS SCH100-125KTL Fault0150, CPS SCH100-125KTL Protect0230, CPS SCH125KTL-AIO Fault0150, CPS SCH125KTL-AIO Protect0230, CPS SCH200-250K-T Fault0390, CPS SCH200-250K-T Protect0230, CPS SCH200-250K-T Protect0390, CPS SCH275KTL Fault0150, CPS SCH275KTL Protect0230, CPS SCH350KTL Fault0150, CPS SCH350KTL Protect0230
Canadian Solar: Canadian Solar 185-255K RelayChk-FAIL
Fronius: Fronius Galvo 245, Fronius Symo 245
Huawei: Huawei SUN2000-100KTL-USH0 2021, Huawei SUN2000-25-30KTL-US 411, Huawei SUN2000-45KTL-US-HV-D0 411
KACO new energy: KACO new energy blueplanet TL3 160, KACO new energy blueplanet TL3 161, KACO new energy blueplanet TL3 162, KACO new energy blueplanet TL3 164, KACO new energy blueplanet TL3 165, KACO new energy blueplanet TL3 166, KACO new energy blueplanet TL3 188, KACO new energy blueplanet TL3 59
SMA: SMA SBSE-US-50 9007, SMA PEAK3-US 9007, SMA CORE1-US 8208, SMA CORE1-US 8209, SMA CORE1-US 9007, SMA STP-TL-US 8204, SMA STP-X-US 9007, SMA SC-CP-XT 6447, SMA SC-CP-XT 6457, SMA SC-CP-XT 6471, SMA SC-CP-XT 6472
Solis: Solis 1P-4G-US AFCI Check FAULT, Solis RHI-1P-HV AFCI Check FAULT, Solis S6-EH1P AFCI Check FAULT, Solis S6-EH2P AFCI-Check, Solis S6-EH2P ILeak-Check, Solis S6-EH3P30-60K AFCI-Check, Solis S6-EH3P30-60K ILeak-Check, Solis S6-EH3P75-150K AFCI-Check, Solis S6-EH3P75-150K ILeak-Check, Solis S6-GC AFCI-Check, Solis S6-GC DSP-SelfCheck, Solis S6-GC ILeak-Check, Solis S6-GU AFCI-Check, Solis S6-GU DSP-SelfCheck, Solis S6-GU ILeak-Check
Sungrow: Sungrow SG-CX-US 105
Yaskawa Solectria: Yaskawa Solectria PVI-14-20TL Arc Board Error, Yaskawa Solectria PVI-25TL-R Fault0150, Yaskawa Solectria PVI-25TL-R Protect0230, Yaskawa Solectria PVI-TL Arc Board Error, Yaskawa Solectria XGI-1500-1MW CRIT-11, Yaskawa Solectria XGI-1500-1MW CRIT-12, Yaskawa Solectria XGI-1500 CRIT-11, Yaskawa Solectria XGI-1500 CRIT-12, Yaskawa Solectria XGI-1500-DCG CRIT-11, Yaskawa Solectria XGI-1500-DCG CRIT-12

Same code in other families

CPS SCH200-250K-T Protect0390

Claims

`defined_in`

c1 drafted · lead CPS SCA100K-T-US-480 SCA50K-T-US-208 User Manual Rev 1.0

CPS SCA100K-T-US-480 SCA50K-T-US-208 User Manual Rev 1.0 tbl=56.r1 h=8e8a400c5e90

`has_event_class`

c2 drafted · lead Fault (device stops or needs intervention)

from the code prefix

CPS SCA100K-T-US-480 SCA50K-T-US-208 User Manual Rev 1.0 tbl=56.r1 h=8e8a400c5e90

`reports`

c3 drafted · lead Self-test failure

CPS SCA100K-T-US-480 SCA50K-T-US-208 User Manual Rev 1.0 tbl=56.r1 h=8e8a400c5e90

`affects`

c4 drafted · lead Ground fault detection circuit

CPS SCH200-250K-T-US User Manual Aug 2026 tbl=42.r6 h=3d032117a152

`mitigated_by`

c5 drafted · lead Inverter restart

CPS SCA100K-T-US-480 SCA50K-T-US-208 User Manual Rev 1.0 tbl=56.r1 h=8e8a400c5e90
CPS SCH200-250K-T-US User Manual Aug 2026 tbl=42.r6 h=3d032117a152

`has_recovery`

c6 drafted · lead Manual reset (operator restarts or acknowledges)

Power-cycle AC and DC first; if it persists, contact service or replace the inverter.

CPS SCA100K-T-US-480 SCA50K-T-US-208 User Manual Rev 1.0 tbl=56.r1 h=8e8a400c5e90
CPS SCH200-250K-T-US User Manual Aug 2026 tbl=42.r6 h=3d032117a152

`applies_to`

c7 drafted · lead CPS SCA100K-T-US-480 / SCA50K-T-US-208

CPS SCA100K-T-US-480 SCA50K-T-US-208 User Manual Rev 1.0 tbl=56.r1 h=8e8a400c5e90

Data