Troubleshooting - GE GEP User Manual

6 Troubleshooting

In most situations, the inverter requires very little maintenance. However, if the inverter is not
working properly, please try the following solutions:
Type of fault
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 the earth.
Isolation Failure
3. If impedance is larger than 100 kΩ, please contact local service office.
4. Take off AC connector, measure the impedance between neutral and
PE. If it is larger than 10 kΩ, please check AC wiring.
1. Disconnect DC switch, check the insulation of PV string wiring to earth.
Ground I Failure 2. Reconnect the DC switch again.
3. If the problem still exists, please call the local service office.
1. Disconnect DC switch, take off AC connector, measure the voltage
between line and neutral in connector, make sure if it conforms to the
grid-connected specification of inverter.
Vac Failure 2. If it does not, please check grid wiring.
3. If it does, please connect AC connector, reconnect DC switch, inverter
will connect to automatically. If the problem still exists, please call the
local service office.
System
Failure
1. The PV inverter will automatically restart if the Fac returns to nornal.
Fac Failure
2. If the problem still exists, please call the local service office.
1. Disconnect the DC switch, take off AC connector, measure the voltage
between line and neutral in connector, make sure if it conforms to the
grid-connected specification of inverter.
Utility Loss
2. If it does not, please check if the distribution switch is connected and
the grid is normal.
3. If it does, reconnect AC connector and DC connector; If the problem
still exists, please call the local service office.
1. Disconnect the DC switch, take off DC connector, check PV string
voltage, check if it exceeds the input voltage in inverter specification.
PV Over Voltage
2. If it does, please reconfigurate PV panel string.
3. If the problem still exists, please call the local service office.
1. Disconnect the DC switch, take off DC connector, check PV string
voltage, check if it exceeds the input voltage in inverter specification.
Over Temperature
2. If it does, please reconfigurate PV panel string.
3. If the problem still exists, please call the local service office.
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Troubleshooting
Type of fault
Relay-check Failure
DCI High
Inverter 1. Disconnect the DC connector.
EEPROM R/W Failure
2. Reconnect the DC connector.
Failure
SPI Failure
3. If the problem still exists, please call the local service office.
DC Bus High
GFCI Failure
1. Disconnect the DC switch, take off DC connector, measure the voltage of PV
string.
2. Plug in DC connector, and reconnect DC switch.
Others
No display
3.If the voltage is less than 70 V, please check the PV string configuration.
4. If the voltage is higher than 180V and still no display please contact local service
office.
When sunlight is insuffcient, the PV inverter may continuously start and shut down due
to insufficient power generation by the PV panel, this will not damage the inverter. If the
problem still exists, please call the local service office.
Troubleshooting
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