8. Trouble Shooting
8. Trouble Shooting
.33.
.32.
Alarm Message
OV-G-V01/02/03/04
OV-G-F01/02
UN-G-F01/02
Reverse-GRID
NO-GRID
OV-DC01/02/03/04
OV-BUS
UN-BUS01/02
GRID-INTF01/02
INI-FAULT
OV-TEM
Failure description
Over grid voltage
Under grid voltage
Over grid frequency
Under grid frequency
Wrong AC polarity
No grid voltage
Over DC voltage
Over DC bus voltage
Under DC bus voltage
Grid interference
Initialization system fault
Over Temperature
Solution
1.Resistant of AC cable is too high.
Change bigger size grid cable
2.Adjust the protection limit if it’s
allowed by electrical company.
1.Check connections and grid switch.
2.Check the grid voltage inside inverter
terminal.
1.Reduce the module number in series
1.Restart inverter
2.Change power board
1.Check PV input connections
2.Check DC input voltage
(single phase >120V, three phase >350V)
3.Check if PV+/
-
is reversed
Inverter no power
on LCD
No power
LCD show initializing
all the time
can not start-up
1.Check if the connector on main
board or
power board are fixed.
2.Check if the DSP connector to
power board
are fixed.
1.Check inverter surrounding ventilation.
2.Check if there’s sunshine direct on
inverter in hot weather.
1.Remove all DC input, reconnect and
restart inverter one by one.
2.Identify which string cause the fault and
check the isolation of the string.
1.Use user define function to adjust the
protection limit if it’s allowed by
electrical company.
1.Check inverter inductor connection
2.Check driver connection
1.Restart inverter or contact installer.
UN-G-V01/02
DC-INTF
DC input overcurrent
1.Restart inverter
2.Identify and remove the string to the fault MPPT
2.Change power board
IGFOL-F
Grid current tracking fail
OV-G-I
Over grid current
OV-DCA-I
IGBT-OV-I
Over IGBT current
12Power-FAULT
12V power supply fault
1.Restart inverter or contact installer.
IG-AD
Grid current sampling fail
DSP-B-FAULT
Comm. failure between main
and slave DSP
PV ISO-PRO
01/02
PV isolation protection
1. Check the polarity of AC connector.
Reverse-DC
Reverse DC polarity
1. Check the polarity of DC connector.
NOTE:
If the inverter displays any alarm message as listed in Table 8.1; please
turn off the inverter (refer to Section 5.2 to stop your inverter) and wait for 5
minutes before restarting it (refer to Section 5.1 to start your inverter). If the
failure persists, please contact your local distributor or the service center.
Please keep ready with you the following information before contacting us.
1. Serial number of Solis Single Phase Inverter;
2. The distributor/dealer of Solis Single Phase Inverter (if available);
3. Installation date.
4. The description of problem (i.e. the alarm message displayed on the LCD and the status
of the LED status indicator lights. Other readings obtained from the Information submenu
(refer to Section 6.2) will also be helpful.);
5. The PV array configuration (e.g. number of panels, capacity of panels, number of strings
, etc.);
6. Your contact details.
Table 8.1 Fault message and description
Screen OFF
with DC applied
Inverter internally damaged
1.Do not turn off the DC switches as it will
damage the inverter.
2.Please wait for the solar irradiance reduces
and confirm the string current is less than
0.5A with a clip-on ammeter and then turn
off the DC switches.
3.Please note that any damages due to wrong
operations are not covered in the device
warranty.
DCinj-FAULT
High DC injection current
1.Check AC and DC connection
2.Check inverter inside cable connection.
1.Restart inverter or contact installer.
1.Restart inverter or contact installer.
Alarm Message
Failure description
Solution
ILeak-PRO
01/02/03/04
Leakage current protection
RelayChk-FAIL
Relay check fail
