126
Class 4 Status
Codes
(continued)
455
Reference power source for AC measurement is operating outside of
tolerances
Behavior The Fronius IG Plus stops feeding power into the
grid, the display shows a critical error via a red Ope-
rating Status LED
Remedy If status code persists, contact a Fronius-trained
service technician
456
Error during anti-islanding test
Behavior The Fronius IG Plus stops feeding power into the
grid, the display shows a critical error via a red Ope-
rating Status LED
Remedy If status code persists, contact a Fronius-trained
service technician
457
Grid relay stuck
Behavior The Fronius IG Plus stops feeding power into the
grid, the display shows a critical error via a red Ope-
rating Status LED
Remedy If status code persists, contact a Fronius-trained
service technician
460
Reference power source for the digital signal processor (DSP) is opera-
ting outside of tolerances
Behavior The Fronius IG Plus stops feeding power into the
grid, the display shows a critical error via a red Ope-
rating Status LED
Remedy If status code persists, contact a Fronius-trained
service technician
461
Error in DSP data memory
Behavior The Fronius IG Plus stops feeding power into the
grid, the display shows a critical error via a red Ope-
rating Status LED
Remedy If status code persists, contact a Fronius-trained
service technician
464
Display error
The software and/or hardware versions of the display and IG Brain are not
compatible.
Behavior The Fronius IG Plus stops feeding power into the
grid, the display shows a critical error via a red Ope-
rating Status LED
Remedy Update firmware using Bootloader or ‘Fronius
Solar.update/IG Plus’