Solar Lattice

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

Fronius Primo 766

Code
766
Vendor severity
Class 7
ID
fc:fronius-primo-766
IRI
https://solarlattice.org/kb/fc/fronius-primo-766
Status
active
Also known as
766, Fronius 766
Category
Inverters
Class fault drafted · lead
Production reduced to 750 W drafted · lead
Clears not stated

Decoded

Reports inverter power derating.

What can be behind Inverter power derating

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 W021, ABB / FIMER PVS-60-TL W021
Fronius
Fronius Galvo 517, Fronius Galvo 766, Fronius Primo 517, Fronius Symo 517, Fronius Symo 572, Fronius Symo 766
KACO new energy
KACO new energy blueplanet TL3 11, KACO new energy blueplanet TL3 129, KACO new energy blueplanet TL3 20, KACO new energy blueplanet TL3 64
SMA
SMA SB-US-41 8006, SMA CORE1-US 10502, SMA STP-TL-US 8001, SMA SI-US W137, SMA SI-US W138, SMA SI-US W139, SMA SI-US W140
Yaskawa Solectria
Yaskawa Solectria SGI-XTM Current Limit, Yaskawa Solectria SGI-XTM Power Derated

Same code in other families

Claims

defined_in

c1 drafted · lead fronius-primo-208-240-emanual-status-codes

reports

c2 drafted · lead Inverter power derating

has_event_class

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

has_production_effect

c4 drafted · lead Derate (output reduced or limited)

output_limit

c5 verified · fact ≤ 750 W

Conditions: basis=absolute; emergency power limiter activated

verified by: review-workflowverified on: 2026-10-23

applies_to

c6 drafted · lead Fronius Primo 208-240

Data