REFU Elektronik GmbH REFUsol 08K ... 23K 49
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 power section 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.
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