54
REFUsol 48K-UL
REFU Elektronik GmbH
Error
Code
Text
Description
Action
not resolve the problem, contact
Service.
90054
Overvoltage 2
The phase voltage has exceeded the
limit value of the voltage average
monitor for too long.
As long as the inverter is detecting
the voltage error: monitor line
voltages (analyse grid). If you
consider the line voltages to be in
order, contact Service.
90055
Grid overvoltage Line-to-line overvoltage (AC)
detected
90056
Grid
undervoltage
Line-to-line undervoltage (AC)
detected
90057
Watchdog C0
Internal protection function is
triggered.
Contact Service.
90058
Watchdog C1
90059
LT Firmware
The software of the LT is defective.
90060
FRT stability
Stability issue with the DC link
detected.
Please contact the service if it
happens repeatedly
90061
Update fault
This notification can be ignored.
No measures necessary.
90062
Fault ride
through
Grid-instability which is handled with
respect to the grid code standards.
A0013
PM isolation
RCD SR
The measured value of the residual
currents are over the limits:
Measured value >150 mA -> Trip
within 20 ms
Measured value >60 mA -> Trip
within 130 ms
Measured value >30 mA -> Trip
within 280 ms
Check system isolation. If you
consider the system isolation to be
in order, contact Service.
A0020
External cut-off
External monitoring has triggered a
disconnection.
During the inverter detects an
external cut-off: Verify external
cut-off signal . Possible causes:
wire breakage or wrong sensor
selected. Refer to the manual for
the right settings.
A0021
ARC fault
detected
Arc fault detection has triggered a
disconnection
Reset the arc fault detector. Press
ESC on the Disblay.
A0022
Ext. OVGR
Signal
External stop signal OVGR is
detected.
During the inverter detects OVGR:
Verify External stop signal OVGR.
Possible causes wire breakage.
