Fault codes › Fronius › Fronius Primo 208-240 (3.8-1 to 15.0-1)

Fronius Primo 401

Code: 401
Shown as: No internal communication with power stage set
Vendor severity: Class 4
ID: fc:fronius-primo-401
IRI: https://solarlattice.org/kb/fc/fronius-primo-401
Status: active
Also known as: 401, Fronius 401, No internal communication with power stage set
Category: Inverters

Class fault drafted · lead

Production stops drafted · lead

Clears by itself drafted · lead

Decoded

Reports internal communication failure; do: contact manufacturer service.

What can be behind Internal communication failure

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

Communication bus wiring or termination fault drafted · lead
Real-time clock failure verified · fact

Defined in

fronius-primo-208-240-emanual-status-codes — Fronius drafted · lead
- tbl=17.r1 h=ec2e64e7fa7d
- sec=h20 h=45088a5d7149

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 E003, ABB / FIMER PVS-166-175-TL E005, ABB / FIMER PVS-166-175-TL E054, ABB / FIMER PVS-166-175-TL E074, ABB / FIMER PVS-60-TL E003, ABB / FIMER PVS-60-TL E005, ABB / FIMER PVS-60-TL E054, ABB / FIMER PVS-60-TL E074, ABB / FIMER TRIO-20.0-27.6-TL E003, ABB / FIMER TRIO-20.0-27.6-TL E005, ABB / FIMER UNO-DM-3.3-5.0-PLUS E003, ABB / FIMER UNO-DM-3.3-5.0-PLUS E005, ABB / FIMER UNO-DM-3.3-5.0-PLUS E054, ABB / FIMER UNO-DM-6.0-PLUS E003, ABB / FIMER UNO-DM-6.0-PLUS E005, ABB / FIMER UNO-DM-6.0-PLUS E054
CPS: CPS SCA25KTL-208 CommErr, CPS SCA25KTL-480 CommErr, CPS SCA50-100K-T Fault6050, CPS SCA50-100K-T Fault6100, CPS SCA50-100K-T Protect1070, CPS SCA50-100K-T Protect0770, CPS SCA50-100K-T Warn0020, CPS SCH100-125KTL CommErr, CPS SCH125KTL-AIO CommErr, CPS SCH200-250K-T CommErr, CPS SCH275KTL CommErr, CPS SCH350KTL CommErr
Canadian Solar: Canadian Solar 185-255K DSP-B-FAULT, Canadian Solar 23-28KTL-CT CommErr
Fronius: Fronius Galvo 401, Fronius Galvo 416, Fronius Galvo 425, Fronius Galvo 452, Fronius Galvo 752, Fronius Primo 416, Fronius Primo 425, Fronius Primo 452, Fronius Primo 485, Fronius Primo 515, Fronius Primo 516, Fronius Primo 752, Fronius Symo 401, Fronius Symo 416, Fronius Symo 425, Fronius Symo 452, Fronius Symo 485, Fronius Symo 515, Fronius Symo 516, Fronius Symo 519, Fronius Symo 601, Fronius Symo 752
Huawei: Huawei SUN2000-25-30KTL-US 322, Huawei SUN2000-45KTL-US-HV-D0 322
KACO new energy: KACO new energy blueplanet TL3 34
SMA: SMA SB-US-40 6701-6702, SMA SB-US-41 6701, SMA SB-US-41 6702, SMA PEAK3-US 6701, SMA CORE1-US 6701, SMA CORE1-US 6702, SMA CORE1-US 7622, SMA STP-TL-US 6701-6702, SMA SC-CP-XT 6119, SMA SC-CP-XT 7600, SMA SC-CP-XT 7602, SMA SC-CP-XT 7605, SMA SI-US F739, SMA SI-US F743, SMA SI-US W740, SMA SI-US W741, SMA SI-US W742, SMA SI-US W744, SMA SI-US W745, SMA SI-US W746
Schneider Electric: Schneider Electric CL125 059, Schneider Electric CL125 074
Solis: Solis 3P-5G-US DSP-B-Fault, Solis RHI-1P-HV DSP-B-Fault, Solis S6-EH1P DSP-B-Fault, Solis S6-EH2P DSP-B-Fault, Solis S6-EH3P30-60K DSP-B-Fault, Solis S6-EH3P75-150K DSP-B-Fault, Solis S6-GC DSP-B-Fault, Solis S6-GU DSP-B-Fault
Yaskawa Solectria: Yaskawa Solectria PVI-14-20TL SPICommErr, Yaskawa Solectria PVI-25TL-R CommErr, Yaskawa Solectria PVI-TL SPICommErr, Yaskawa Solectria XGI-1500-1MW CRIT-2, Yaskawa Solectria XGI-1500-1MW CRIT-3, Yaskawa Solectria XGI-1500 CRIT-2, Yaskawa Solectria XGI-1500 CRIT-3, Yaskawa Solectria XGI-1500-DCG CRIT-2, Yaskawa Solectria XGI-1500-DCG CRIT-3

Same code in other families

Claims

review note: support check: partial - Passages show class 4 codes may need technician intervention and 401 auto-retries, but do not explicitly classify 401 as a fault.

`has_production_effect`

c4 drafted · lead Trip (production stops)

Feed-in stops until communication is restored.

fronius-symo-ul-emanual-status-codes tbl=15.r1 h=60dc19b5aa45
fronius-primo-208-240-emanual-status-codes tbl=17.r1 h=ec2e64e7fa7d
fronius-galvo-208-240-emanual-status-codes tbl=18.r1 h=c066eceb8929

review note: support check: partial - Passages say the inverter will attempt to reconnect and 'resume' grid feed, implying feed-in is interrupted, but this is not…