- 107 -
000515AG
- Code on display
- Error message
- Signal
Name of Alarm and Cause Solution
- W004
- Grid OV
-
Yellow LED
Grid overvoltage:
This error signal occurs when during the inverter's nor-
mal operation the grid voltage exceeds the maximum
limit set by the operator.
• Check the grid voltage on the inverter.
If the voltage tends to rise (when the inverter is connected),
there is a problem of high line or grid impedance.
• Check the grid voltage also on the supply.
- If it is high, it means that there is high grid impedance. In this
case, ask the operator to adjust the grid voltage. If the opera-
tor authorises a change to the inverter's parameters, agree the
new limits with customer assistance
- If the voltage at the point of supply is much lower than that
measured on the inverter, it is necessary to adjust the line (in-
verter-contactor).
- If the voltage and the grid frequency come back within the
limits (also when the inverter is connected to the grid), contact
customer assistance
- W005
- Grid UV
-
Yellow LED
Grid undervoltage:
This error signal occurs when during the inverter's nor-
mal operation the grid voltage exceeds the minimum
limit set by the operator.
• Check the grid voltage on the inverter.
• Check the grid voltage also on the supply:
- If it is high, it means that there is high grid impedance. In this
case, ask the operator to adjust the grid voltage. If the opera-
tor authorises a change to the inverter's parameters, agree the
new limits with customer assistance
- If the voltage at the point of supply is much lower than that
measured on the inverter, it is necessary to adjust the line (in-
verter-contactor).
- If the voltage and the grid frequency come back within the
limits (also when the inverter is connected to the grid), contact
customer assistance
- W006
- Grid OF
-
Yellow LED
Grid over-frequency:
This error signal occurs when during the inverter's
normal operation the grid frequency exceeds the maxi-
mum limit set by the operator.
• Check the grid frequency in the inverter.
• Check the grid frequency also on the supply:
-
- If the voltage and the grid frequency come back within the
limits (also when the inverter is connected to the grid), contact
customer assistance
- W007
- Grid UF
-
Yellow LED
Grid under-frequency:
This error signal occurs when during the inverter's nor-
mal operation the grid frequency exceeds the minimum
limit set by the operator.
• Check the grid frequency in the inverter.
• Check the grid frequency also on the supply:
-
- If the voltage and the grid frequency come back within the
limits (also when the inverter is connected to the grid), contact
customer assistance
- W009
- Empty Table
-
Yellow LED
Characterisation board for the wind generator not com-
piled (only WIND models)
(only WIND models)
- W010 *
- Fan Fail
-
Yellow LED lamp.
*not visualised on dis-
play
Fan Fail:
This error occurs when there is a malfunction in the fan/
fans inside the inverter.
• Error inside the inverter and cannot be checked externally.
- If the alarm repeats persistently, contact customer assistance.
- W011
- Bulk UV
-
Yellow LED
Low “Bulk” voltage (DC-DC circuit):
The alarm (which is a warning and not an error) is gen-
erated when the voltage at the heads of the bulk ca-
pacitors does not reach the threshold for the operation
of the inverter (internal unchangeable threshold).
• Raise the value of the activation voltage (Vstart) so as to have
sufcient power from the PV generator at the time of the in-
verter's grid connection.
• Check the input voltage on the inverter.
- If it does not exceed Vstart, check for the presence of suf-
c i e n t i r r a d i a t i o n a n d t h e c o r r e c t c o m p o s i t i o n o f t h e s y s t e m .
- If it exceeds Vstart, contact customer assistance
- W012 *
- Batt. Low
-
Yellow LED
*not visualised on dis-
play
Battery Low:
The inverter displays the “Battery Low” message when
it records a voltage for the buffer battery which is too
low.
• Check that the date/time are set correctly and, if they are not,
set them.
Subsequently arrange to completely switch off the inverter (on
both AC and DC) and wait a few minutes.
Finally, restart the inverter and check whether the date/time are
now correctly set or whether they have reset to 01/01/2000.
In this case replace the battery with the inverter completely
switched off (section AC and DC side) being careful to maintain
the polarity
- W013 *
- Clock Fail
-
Yellow LED lamp.
*not visualised on dis-
play
Clock Fail:
The alarm occurs when there is a difference of over 1
minute in the time displayed compared to the internal
time of the microprocessors and indicates a malfunc-
tion of the clock circuit.
• Error inside the inverter and cannot be checked externally.
- If the alarm repeats persistently, contact customer assistance.
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