Solar Lattice

Fault codes › Fronius › Fronius Symo UL (10.0-3 to 24.0-3 208-240/480)

Fronius Symo 416

Code
416
Shown as
No communication between power module and control unit
Vendor severity
Class 4
ID
fc:fronius-symo-416
IRI
https://solarlattice.org/kb/fc/fronius-symo-416
Status
active
Also known as
416, Fronius 416, No communication between power module and control unit
Category
Inverters
Class fault drafted · lead
Production stops verified · fact
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.

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 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 401, 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 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

defined_in

c1 drafted · lead fronius-symo-ul-emanual-status-codes

reports

c2 drafted · lead Internal communication failure

has_event_class

c3 drafted · lead Fault (device stops or needs intervention)

review note: support check: partial - 416 auto-retries and class 4 may need intervention, but a fault classification is not explicitly stated.

has_production_effect

c4 verified · fact Trip (production stops)

Feed-in interrupted until reconnection succeeds.

verified by: review-workflowverified on: 2026-10-23review note: support check: partial - Inverter will reconnect and 'resume' feed-in, implying interruption, but no explicit statement that feed-in stops.

has_recovery

c5 drafted · lead Auto-reset (clears by itself)

Service technician if the code persists.

mitigated_by

c6 drafted · lead Contact manufacturer service

Only when the code persists.

applies_to

c7 drafted · lead Fronius Symo

Data