7. Troubleshooting
7. Troubleshooting
.32.
.33.
CAUTION:
Do not touch the surface when the inverter is operating. Some parts may be hot and
cause burns. Turn OFF the inverter (refer to Section 6.2) and let it cool down before
you do any maintenance or cleaning of inverter.
Note:
Never use any solvents, abrasives or corrosive materials to clean the inverter.
Solis AC-Coupled inverter does not require any regular maintenance. However, cleaning the
heatsink will help inverter dissipating heat and increase the lifetime of inverter. The dirt on the
inverter can be cleaned with a soft brush.
The LCD and the LED status indicator lights can be cleaned with cloth if they are too dirty to be
read.
The inverter has been designed in accordance with international grid tied standards for safety,
and electromagnetic compatibility requirements. Before delivering to the customer the inverter
has been subjected to several test to ensure its optimal operation and reliability.
In case of a failure the LCD screen will display an alarm message. In this case the inverter may
stop feeding energy into the grid. The alarm descriptions and their corresponding alarm messages
are listed in Table 7.1:
Alarm Message
Failure description
Solution
OV-G-V
Grid Overvoltage
Check if the grid is correctly connected,
wait for the grid to be normal.
UN-G-V
Grid Undervoltage
Check if the grid is correctly connected,
wait for the grid to be normal.
OV-G-F
Grid Overfrequency
Check if the grid is correctly connected,
wait for the grid to be normal.
UN-G-F
Grid Underfrequency
Check if the grid is correctly connected,
wait for the grid to be normal.
NO-Grid
No Grid
Check if the grid is correctly connected,
wait for the grid to be normal.
OV-BUS
DC Bus overvoltage
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
UN-BUS
DC Bus voltage sampling
Error
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
DC-INTF.
Battery Overcurrent
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
IGFOL-F
Grid Current Tracking Error
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
OV-G-I
Grid Overcurrent
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
AC Transient over
current
AC Transient Overcurrent
Check if the backup port is shorted, Restart
the inverter, if the fault still exists, contact
Solis after-sale service.
DCInj-FAULT
Over DC injection
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
IGBT-OV-I
IGBT Overcurrent
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
OV-TEM
Internal Over Temperature
Check if the inverter installation meets the
requirements listed in the manual,
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
RelayChk-FAIL
Relay Fault
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
GRID-INTF02
Grid Interference 02
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
IG-AD
Grid Current Sampling Error
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
OV-IgTr
Grid Transient Overcurrent
Restart the inverter, if the fault still exists,
contact Solis after-sale service.
OV-Vbatt-H
Battery Hardware Overcurrent
Check if the battery is correctly connected or
the battery contactor is disconnected, Restart
the battery, Restart the inverter,
if the fault still exists, contact Solis after-sale
service.
