136
Remedy If status code persists: Contact a Fronius-trained service tech-
nician
455
Reference power source for AC measurement is operating outside of tolerances
Description The inverter stops feeding power into the grid, the display
shows a critical error via a red Operating Status LED.
Remedy If status code persists: Contact a Fronius-trained service tech-
nician
456
Error during anti-islanding test
Description The inverter stops feeding power into the grid, the display
shows a critical error via a red Operating Status LED.
Remedy If status code persists: Contact a Fronius-trained service tech-
nician
457
Grid relay stuck
Description The inverter stops feeding power into the grid, the display
shows a critical error via a red Operating Status LED.
Remedy If status code persists: Contact a Fronius-trained service tech-
nician
460
Reference power source for the digital signal processor (DSP) is operating outside of tol-
erances
Description The inverter stops feeding power into the grid, the display
shows a critical error via a red Operating Status LED.
Remedy If status code persists: Contact a Fronius-trained service tech-
nician
461
Error in DSP data memory
Description The inverter stops feeding power into the grid, the display
shows a critical error via a red Operating Status LED.
Remedy If status code persists: Contact a Fronius-trained service tech-
nician
464
Display error
The software and/or hardware versions of the display and IG Brain are not compatible.
Description The inverter stops feeding power into the grid, the display
shows a critical error via a red Operating Status LED.
Remedy Update firmware using Bootloader or Fronius Solar.update/IG
Plus