Troubleshooting 53
Error List
REFUsol 100K
982059/02
2020-11
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90020
Initialisation C1 The system initialization has not been com-
pleted successfully.
▸Update the device if a new firmware version
exists.
▸If the error persists, please contact REFU
Service.
90021
Initialisation C0
90024
SR parameter error The device parameterization was not loaded
during system initialization.
90028
Update Start Operation of the inverter has been interrupted
to perform a firmware update. The device re-
starts automatically after a successful update.
▸Wait until the update process is complete.
90029
Update fault An error occurred repeatedly during the firm-
ware update.
▸Download the correct firmware package
again from the manufacturer's website and
restart the update.
▸If the error persists, please contact REFU
Service.
9002A
Keep Alive Internal communication is disrupted. The de-
vice is restarted automatically.
▸If the error persists, please contact REFU
Service.
9002B
Update End The firmware update was successfully com-
pleted.
For information only.
9002D
AntiIslandRocof An island network was identified using the RO-
COF method. The device disconnects from the
grid and restarts automatically after 30 s un-
der normal grid conditions.
▸Check the grid connection and measure the
voltages with a True RMS meter.
9002E
AntiIsland Active An island network was detected using the ac-
tive method. The device disconnects from the
grid and restarts automatically after 30 s un-
der normal grid conditions.
Error Code Message Description Instructions
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