Error Messages and Troubleshooting
64
Main Menu (v2.6)
REFUsol 20K...33K-2T
982079 | 05 | 2021-03
ID85 UnderFre
-
qDerating
The inverter is de
-
rating (reducing
power) because
the grid frequency
is too low.
The inverter automatically reduces the output power if the grid frequency is too low.
As soon as the grid frequency is back in the regular range, derating is inactive again.
ID86 Fan4 Alarm
The fan 4 reports
an error.
Check acoustically whether the internal fan is working properly. If no troubleshooting
is possible, contact REFU Service.
ID87-
ID89
–
(Reserved)
–
ID90 Fan3 alarm
The fan 3 reports
an error.
Check acoustically and visually that the fan in question is functioning correctly. If no
troubleshooting is possible, contact REFU Service.
ID91 Fan1 alarm
Fan 1 reports an
error.
ID92 Fan2 alarm
Fan 2 reports an
error.
ID93 Lightning
protection
alarm
Overvoltage pro
-
tection modules
(SPD's) have been
triggered.
Check the surge protection modules (SPD's), if no troubleshooting is possible, con
-
tact REFU Service.
Tab. 8:
Event list
with error and information messages
ID
Event name Event description Measure
Summary of Contents for 20K-2T
Page 71: ......
