REFU REFUsol 50K-3T Bedienungsanleitung Seite 55

Tab. 8: Event list with error and information messages
ID Event name Event description Measure
ID25 BusUVP DC bus voltage is
too low.
ID26 BusOVP DC bus voltage is
too high.
ID27 VbusUnbal- DC bus voltage is
ance unbalanced.
ID28 DciOCP DC current is too
high.
ID29 SwOCPIn- AC current is too
stant high.
REFUsol 50K-3T
982081 | 03 | 2021-03
If the PV system configuration is correct (no ID05 error), the possible cause is insuf-
ficient solar irradiation. The inverter automatically returns to normal operating sta-
tus after the solar irradiation returns to a normal level.
ID26-ID27 are internal faults of the inverter, switch off the DC switch, wait 5 minutes
and switch on the DC switch again.
Check the DC voltages on both MPPT inputs and on the display. If no troubleshooting
is possible, contact REFU Service.
Check if the MPPT mode (parallel or independent) is set correctly according to the PV
system configuration, change if necessary.
When the correct MPPT mode is set, switch off the DC switch, wait 5 minutes and
switch on the DC switch again. If no troubleshooting is possible, contact REFU Service
.
Internal error of the inverter. Switch off the DC switch, wait 5 minutes and switch the
DC switch on again. If no troubleshooting is possible, contact REFU Service.
Error Messages and Troubleshooting
Main Menu (v2.6)
55