Chapter 14. Faults
Fault
No.
Fault type Fault Description How to fix it
96 Low electrical grid
frequency –
monitoring state
The frequency of the electrical grid
measured before the inverter starts
working is too low or the inverter
measuring module is damaged.
1. Check the electrical grid frequency.
2. In case of frequent failures contact the
service.
97 High electrical
grid frequency –
monitoring state
The frequency of the electrical grid
measured before the inverter starts
working is too high or the inverter
measuring module is damaged.
98 Low electric grid
voltage –
monitoring state
The electric grid RMS voltage is too low
or inverter measurement module is
damaged.
1. Check the electrical grid voltage.
2. In case of frequent failures contact the
service.
99 High electric grid
voltage –
monitoring state
The electric grid RMS voltage is too high
or inverter measurement module is
damaged.
Note: The inverter monitors the electrical grid for 60 seconds before starting work. After a failure with
incorrect electrical parameters in the grid (fault 91 ÷ 94) or failure of the grid current controller (fault 95), the
inverter also monitors the electrical grid for 60 seconds before restarting.
14.2. List of battery charger module failure code
Table 14.2. List of battery charger module failure codes
Fault
No.
Fault type Fault Description How to fix it
1 High battery
temperature
The battery temperature is
higher than the value set in
parameter 10.8.
1. Check the correct connection of the Pt100
sensor.
2. Check that the voltage at the battery
terminals is correct.
3 High UDC High voltage in the DC-link Check the correct connection of renewable
energy sources.
See failure No. 30 in Table 14.1 on page 43.
4 Low battery voltage Too low voltage at the battery
terminals.
1. Check the battery connections are correct.
2. Check and compare the param setting.
10.7 with the minimum permissible voltage of
the batteries used.
3. Charge the excessively discharged
battery.
5 Short circuit The hardware protection has
registered a short circuit of
transistors.
In case of repeated failure contact the device
manufacturer.
6 High charging
current
The current value is too high
in battery charging mode.
1. Check the battery connections are correct.
2. Make sure the battery is functional.
3. In case of repeated failure, contact the
device manufacturer.
7 High module
temperature
Too high transistors
temperature.
1. Check the heat sink for dirt, clean the heat
sink if necessary.
2. Check the ambient temperature.
13 High battery voltage Too high voltage at the
battery terminals.
1. Check the battery connections are correct.
2. Check and compare the setting of par.
10.6 with the maximum permissible voltage
of the batteries used
16 High discharging
current
The current value is too high
in battery discharge mode.
1. Check the battery connections are correct.
2. Pay attention to the type of electrical loads
in terms of high power consumption.
PS100 – User manual 69
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