105
EN-US
Class 7–10 Ser-
vice Codes
Class 7 status codes concern the inverter control unit, configuration and data recording,
and can directly or indirectly affect grid feed operation.
604 Temperature sensor at
DC2 faulty (Ch4)
1. Faulty temperature sensor
at DC2
1. Replace DC PC board
2. Faulty circuit on power mod-
ule
2. Replace AC PC board
607 Error message from the
RCMU more than 4 times in
24 hours
1. Ground problem 1. Automatically corrected after
24 hours
2. Check PV field
3. Check cabling
Code Description Behavior Remedy
Code Description Behavior Remedy
701* LN node type outside of
range
1. Incorrect LN number 1. Enter LN number again
2. EEPROM faulty 2. Replace Recerbo
702* Recerbo buffer full 1. Problems with LN ring 1. Check LN ring
2. Recerbo faulty 2. Replace Recerbo
703* LN transmission buffer full 1. Problems with LN ring 1. Check LN ring
2. Recerbo faulty 2. Replace Recerbo
705* LN number double assign-
ment
1. LN number exists 2 times 1. Change LN number; LN
number must be unique
706*–707* Communication error for
key activation
1. Occurs once 1. Automatically corrected
2. Recerbo faulty 2. Replace Recerbo
711* EEPROM fault 1. Recerbo faulty 1. Replace Recerbo
712* Error when writing to EE-
PROM
1. Occurs once 1. Automatically corrected
713 EEPROM data could not be
read completely
1. Occurs once 1. Automatically corrected
2. Recerbo faulty 2. Replace Recerbo
714*–715* Error when reading EE-
PROM
1. Occurs once 1. Automatically corrected
2. Recerbo faulty 2. Replace Recerbo
721 Error when writing to EE-
PROM
1. Occurs once 1. Automatically corrected
2. Recerbo faulty 2. Replace Recerbo
722*–726* Error when reading/writing
to EEPROM
1. Occurs once 1. Automatically corrected
2. Recerbo faulty 2. Replace Recerbo
727*–730* EEPROM backup faulty 1. Occurs once 1. Automatically corrected
2. Recerbo faulty 2. Replace Recerbo
731 Error when initializing: USB
flash drive not found
1. USB flash drive read/write-
protected
1. Remove read/write-protec-
tion
2. USB flash drive not found 2. Format USB flash drive
3. USB flash drive not support-
ed
3. Use a different USB flash
drive
4. Access time of inverter too
fast
4. Update software
732 Error when initializing: USB
flash drive current is too
high
1. USB flash drive not suitable
due to high current
1. Use a different USB flash
drive
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