Service Class 4 - Fronius CL Service Manual And Spare Parts List

310
DC LOW / Slave (only in Balance mode)
Cause:
Remedy:
Remedy:

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:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
Cause:
Remedy:
402
Write access to the internal memory of the Fronius CL failed
Cause:
Remedy:
Cause:
Remedy:
403
The area of the internal memory for the country-specific setting is incomplete
Cause:
Remedy:
Cause:
Remedy:
DC input voltage is too low for feed-in mode
Check solar modules
Check the STATE PS menu and replace affected power stage set
Ribbon cable between Snowball and power stage set is either defective or
poorly connected
Check ribbon cable between Snowball and power stage set
Communication or software error between the IG BRAIN and the power stage
set
Software update
Permanent communication error in power stage set
Replace affected power stage set
Error in the communication wiring to the IG BRAIN
Replace IG BRAIN
Faulty data record
Briefly disconnect the Fronius CL from the DC supply
Defective memory on IG BRAIN PC board
Replace IG BRAIN
Faulty data record
Briefly disconnect the Fronius CL from the DC supply
Defective memory on IG BRAIN PC board
Replace IG BRAIN
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