Chapter 14. Faults
14. Faults
The occurrence of the fault is indicated by the red diode lighting up (Fig. 7.1). In the parameters from 0.70 to
0.79 you can read the history of recent failures. Table 14.1 lists the numbers of failures with their
descriptions.
The faults reported by the battery charging module (inverters with the + BAT symbol) are separated from
other failures and stored in par. 0.45. Their description is presented in Table 14.2.
After a cause that could damage the inverter, the system goes into fault state. Depending on the setting of
the par. 1.25:
a) par. 1.25 „On/Off Restart” = 0 (turn off): the red LED will lighting up and the inverter will remain in a
fault state until it is erased by the user,
b) par. 1.25 „On/Off Restart” = 1 (turn on): the inverter will try to resume itself.
Explanation: the inverter after 10 seconds will automatically delete the error message and try to
resume operation. In the situation when the same failure repeats three times, the inverter will go into
fault state, remain in it until it is erased by the user and the red LED will be lighting up continuously
on the display.
14.1. List of fault codes
Table 14.1. List of fault codes
Fault
No.
Fault type Fault Description How to fix it
0 No fault Systems operate properly -
1 Over-temperature The heat sink temperature exceeded 85
ºC.
Check efficiency of ventilation.
Wait until the device has cooled down.
2 Temperature
sensor failure
Indications from the temperature sensor
are incorrect
Contact the service.
10 CRC error Invalid internal storage checksum. Load default parameters, contact the
service.
20 Grounding Too high leakage current. Check the system connections.
30 High Udc voltage Too high voltage on the DC link
capacitors.
1. Check the configuration of electrical
connection of photovoltaic panels (too
many PV panels in series connection)
2. Check the connection of the dump
load resistor when using a synchronous
generator.
31 Too high U_IN1 Input 1 voltage too high 1. Check the configuration of electrical
connection of photovoltaic panels (too
many PV panels in series connection)
32 Too high U_IN2 Input 2 voltage too high 1. Check the configuration of electrical
connection of photovoltaic panels (too
many PV panels in series connection)
2. Check the connection of the dump
load resistor when using a synchronous
generator.
36 Voltage ripples in
the input voltage
Too big ripples in the input voltage 1. Check the correct connection of the
installation.
2. Check the value of phase-to-phase
voltages in the generator.
37 Low Udc Too low voltage on the DC-link
capacitors.
Check if the power of the energy source
is sufficient or higher than the power of
the loads connected to the inverter.
PS100 – User manual 67
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