123
416
Communication with IG-Brain not possible
Behavior The Operating Status LED lights up orange, then the
Fronius IG Plus attempts a restart
Remedy If status code persists, contact a Fronius-trained
service technician
417
Two power stage sets have the same PCB number
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
419
Two or more power stage sets with an identical software serial number
detected
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
421
PCB number has been set incorrectly
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
425
Communication with the power stage set is not possible
Behavior The Operating Status LED lights up orange, then the
Fronius IG Plus attempts a restart
Remedy If status code persists, contact a Fronius-trained
service technician
431
All power stage sets are in boot mode
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’
Class 4 Status
Codes
(continued)
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