Maintenance
39
User Manual V1.0-2022-05-05
Type of fault
Solutions
System
Failure
Isolation Failure
1.
Disconnect DC switch, take off DC connector, check the
impedance between PV (+) & PV(-) to earth.
2.
If impedance is less than 100 kΩ, please check the
insulation of PV string wiring to earth.
3.
If impedance is large than 100 kΩ, please contact local
service office.
4.
Take off AC connector, measure the impedance
between neutral wire and PE line. If it is larger than
10KΩ, please check AC wiring.
Inverters sold in Australia and New Zealand will also
alarm as following when Isolation Fail occurs.
• The buzzer in the inverter will sound for 1minute. If
the problem persists, the buzzer willsound every 30
min.
•
After adding the inverter to Power Sight, the alarm
information will be emailed to the customers via
Power Sight.
Ground I Failure
1. The ground current is too high.
2.
take off the inputs from the PV generator and check
the peripheral AC system.
3. When the problem is cleared, reconnect the PV panel
and check the Inverter status.
4.
Contact local service office for help if the problem still
persist.
Vac Failure
1. The PV Inverter will automatically restart within 5
minutes if the grid returns to normal.
2.
Make sure grid voltage conforms to specifications.
3.
Make sure neutral (N) wire and PE wire are well
connecteds.
4.
Contact local service office for help if the problem still
persist.
Fac Failure
1. Grid is not connected.
2. Check grid cable connection.
3. Check availability of grid.
Utility Loss
• 1. Not connect to the grid.
• 2. Check if the power cable is connected with grid.
• 3. Check the availability of power from the grid.
PV Over Voltage
• 1. Check whether PV open circuit voltage is higher or
too close to the maximum input voltage.
• 2. If the problem still persist when PV voltage is less
than the maximum input voltage, contact local service
office for help.
Over Temperature
• 1. The internal temperature is higher than normal
specified value.
• 2. Reduce ambient temperature.
•
3. Move the inverter to a cool place.
•
4. If the problem still exists, contact local service office
for help.
