Fronius IG Plus A 3.0-1 UNI - Page 129

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EN-US
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
452
Communication between ‘Guard’ and the digital signal processor (DSP) has been inter-
rupted
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
453
Error in grid voltage recording
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
454
Error in grid frequency recording
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
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.