104
522 DC LOW Ch1 1. Main DC switch opened 1. Close the main DC switch
2. PV generator not connected 2. Connect PV generator
3. DC voltage too low for infeed 3. Wait for higher irradiation or
check the modules
4. Reverse voltage of PV gen-
erator
4. Change polarity of PV gen-
erator
5. DC operating mode: fixed
voltage and incorrect voltage
5. Check MPP settings/voltag-
es
6. Measurement error on pow-
er module
6. Replace DC PC board and
then, if necessary, AC PC
board
523 DC LOW Ch2 1. Main DC switch opened 1. Close the main DC switch
2. PV generator not connected 2. Connect PV generator
3. DC voltage too low for infeed 3. Wait for higher irradiation or
check the modules
4. Reverse voltage of PV gen-
erator
4. Change polarity of PV gen-
erator
5. DC operating mode: fixed
voltage and incorrect voltage
5. Check MPP settings/voltag-
es
6. Measurement error on pow-
er module
6. Replace DC PC board and
then, if necessary, AC PC
board
558 Country setup not support-
ed by power module
1. Old software 1. Software update
2. Old software 2. Reload setup
3. Incompatible hardware com-
bination
3. Check hardware compo-
nents
559 Recerbo function not sup-
ported
1. Old software 1. Software update
2. Old software 2. Reload setup
3. Incompatible hardware com-
bination
3. Check hardware compo-
nents
560 Power reduction due to
over-frequency
1. Grid frequency too high 1. Automatically corrected
2. Grid faults 2. Software update
3. Incorrect settings 3. Check settings
565 Failure of AFCI SD card 1. Data writing to SD card
failed
1. Format SD card
566 AFCI deactivated 1. No error – AFCI deactivated 1. If AFCI must be switched on,
use tool
567 GVDPR active 1. Grid voltage too high 1. Automatically corrected
2. Grid faults 2. Software update
3. Incorrect setting 3. Check settings
601 Internal communication er-
ror
1. Occurs once 1. Restart inverter
2. Occurs constantly 2. Replace AC PC board
602 Auto-test Italy failed 1. Auto-test Italy was started
and not completed
1. Reload setup
603 Temperature sensor at μC
faulty (Ch3 AC Temp)
1. Faulty temperature sensor
at μC
1. Replace power module
2. Faulty circuit on power mod-
ule
2. Replace AC PC board
Code Description Behavior Remedy
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