43
status
status.
PV inverter
cleaning
Check periodically that the heat sink is free
from dust and blockage.
Clean
periodically
the heat sink.
Weekly
PV inverter
running
status
Check that the inverter is not damaged or
deformed.
Check for normal sound emitted during
operation of the inverter.
Check that all inverter communicating well
during operation.
If
there
is
any
abnormal
phenomenon, replace
the relevant parts.
monthly
PV inverter
Electrical
Connections
Check that AC, DC, and communication
cables are securely connected;
Check that PGND cables are securely
connected;
Check that cables are intact and there are
not wire aging;
If
there
is
any
abnormal
phenomenon, replace
the cable or re-
connect it.
Semiannuall
y
8.2 Troubleshooting
When inverter enter in shutdown mode, the alarm light is illuminated. Table 8.2 describes
the troubleshooting measures for common fault alarms in the inverter.
Table 8.2
Common troubleshooting measures
Alarm
Name
Causes
Measures Recommended
Grid
Over
Voltage
The grid voltage exceeds
the allowable range.
1. If the alarm occurs accidentally, possibly the power
grid is abnormal accidentally. No extra action is
needed.
2. If the alarm occurs repeatedly, contact the local
power operator. After receiving approval of the local
Grid
Under
Voltage