79
EN-US
310
DC LOW / Slave (only in Balance mode)
Cause: DC input voltage is too low for feed-in mode
Remedy: Check solar modules
Remedy: Check the STATE PS menu and replace affected power stage set
Service class 4 Errors from this class require external intervention to be remedied. They are either tempo-
rary or permanent, and are triggered either by defective hardware or software problems.
401
The control unit was unable to establish a connection to the power stage set
Cause: Ribbon cable between Snowball and power stage set is either defective or
poorly connected
Remedy: Check ribbon cable between Snowball and power stage set
Cause: Communication or software error between the IG BRAIN and the power stage
set
Remedy: Software update
Cause: Permanent communication error in power stage set
Remedy: Replace affected power stage set
Cause: Error in the communication wiring to the IG BRAIN
Remedy: Replace IG BRAIN
402
Write access to the internal memory of the Fronius CL failed
Cause: Faulty data record
Remedy: Briefly disconnect the Fronius CL from the DC supply
Cause: Defective memory on IG BRAIN PC board
Remedy: Replace IG BRAIN
403
The area of the internal memory for the country-specific setting is incomplete
Cause: Faulty data record
Remedy: Briefly disconnect the Fronius CL from the DC supply
Cause: Defective memory on IG BRAIN PC board
Remedy: Replace IG BRAIN
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