104
775 Power stage set pro-
grammed incorrectly
1. Power stage set or filter PC
board not programmed
1. See device -> Info menu:
Search for missing version info
and replace the faulty PC
board
782* - 783* Error during update 1. Occurs once 1. Automatic correction
2. Faulty Recerbo 2. Replace Recerbo
784* Waiting for memory assign-
ment
1. Occurs once 1. Automatic correction
2. Faulty Recerbo 2. Replace Recerbo
789* CRC setup failed 1. Corrupt file in memory 1. Update software
2. Faulty Recerbo 2. Replace Recerbo
794* Memory structure damaged 1. Corrupt file in memory 1. Update software
2. Faulty Recerbo 2. Replace Recerbo
901 Channel 1 measurement
error
Channel 1 current differs from
the others
Check settings, DC fuses and
modules
902 Channel 2 measurement
error
Channel 2 current differs from
the others
Check settings, DC fuses and
modules
903 Channel 3 measurement
error
Channel 3 current differs from
the others
Check settings, DC fuses and
modules
904 Channel 4 measurement
error
Channel 4 current differs from
the others
Check settings, DC fuses and
modules
905 Channel 5 measurement
error
Channel 5 current differs from
the others
Check settings, DC fuses and
modules
990 Difference between yield
and insolation sensor value
is too large
Difference between the output
of the insolation sensor and the
output of the inverter is too
large
Check archive values, shad-
ing, string fuse and check for
faulty modules
991 Deviation in the insolation
sensor is too large
Deviation in the insolation sen-
sor is too large
Check whether the insolation
sensor is dirty, shaded or faulty
992 No values are output by the
insolation sensor or val-
ue(s) are not permitted
Insolation sensor does not out-
put any values or outputs un-
authorised values
Check insolation sensor wiring
993 Incorrect energy report Missing archive values Check archive values in Froni-
us Solar.web server or Data-
logger
996 No connection to Fronius
Solar.web
No connection to Fronius So-
lar.web
1. Check LED status on the
Datalogger
2. Restart Datalogger
3. Check internet connection
4. Check whether the customer
has a timer for switching off the
internet connection and check
that the time interval setting is
not too short
997 Deviation between invert-
ers
Difference in the kWh value for
the inverters (depending on the
settings in Fronius Solar.web)
Check the system manage-
ment settings in Fronius So-
lar.web (actual Wpeak for each
inverter and threshold value)
and check shading
Code Description Behaviour Remedy
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