Solar Lattice

Symptom

Driver supply undervoltage

ID
symptom:driver-supply-undervoltage
IRI
https://solarlattice.org/kb/symptom/driver-supply-undervoltage
Status
active

Fronius Primo and Fronius Symo inverters report this condition as status code 476. In both status code tables, the code means the supply voltage to the driver is too low. The technician sees it as a status code on the inverter, not as a pattern in array data or images. The source tables give only the code and its description, so they list no causes or troubleshooting steps for this code.

<!-- review notes

Claims

observed_as

c1 verified · fact Inverter fault code display

Fronius Primo and Symo inverters report this condition as status code 476, which their status code tables describe as the driver supply voltage being too low.

verified by: review-workflowverified on: 2026-10-23review note: support check: partial - Passages give code 476 as 'Supply voltage for driver too low', but don't name Fronius Primo/Symo or say it is shown on the inverter fault code display.

Referenced by

Data