Maintenance; Trouble Shooting - Ningbo Ginlong Technologies Solis-20K Installation And Operation Manual

8. Maintenance

Solis three phase string inverter does not require any regular maintenance. However, clean the
heat-sink will help inverter dissipating heat and increase the life time of inverter.The dirt on the
inverter can be cleaned with a soft brush.
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.
The LCD and the LED status indicator lights can be cleaned with cloth if they are too dirty
to be read.
Note:
Never use any solvents, abrasives or corrosive materials to clean the inverter.

9. Trouble Shooting

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 to ensure it's 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 9.1:
.42.
9. Trouble Shooting
Alarm Message
Alarm Description
Grid Over Voltage
OV-G-V
Grid Under Voltage
UN-G-V
Grid Over Frequency
OV-G-F
UN-G-F
Grid Under Frequency
NO-Grid
Grid Unbalance
G-PHASE
Grid Frequency Fluctuation
G-F-FLU
Grid Over Current
OV-G-I
DC Bus Unbalance
UNB-BUS
OV-DC DC Over Voltage
DC Bus Over Voltage
OV-BUS
DC Bus Under Voltage
UN-BUS
DC Bus Unbalance 2
UNB2-BUS
DC(Channel A ) Over Current
OV-DCA-I
DC(Channel B ) Over Current
OV-DCB-I
DC-INTF. DC Over Current
GRID-INTF. The Grid Interference Protection
INI-FAULT The DSP Initial Protection
OV-TEM Temperature Protection
GROUND-FAULT
Relay-FAULT Relay Protection
DSP-B-FAULT DSP_B Protection
DCInj-FAULT DC Injection Protection
12Power-FAULT 12V Under Voltage Faulty
ILeak-Check Leakage Current Check Protection
AFCI-Check AFCI Check Fault
ARC- FAULT
Table 9.1 Alarm message and description
No Grid
Ground Fault
AFCI Fault
. 43 .