135
g
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
445
Invalid power stage set configuration
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
450
The monitoring of the power stage set main processor ‘Guard’ is active
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
451
The EEPROM Guard Control is defective
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.