Troubleshooting - GE GEP5.0C User Manual

5.6.3 QU Curve Mode
QU curve mode can be modified by Modbus communication, specifically according to the
inverter Modbus address and Modbus register value, according to the set range to set the
corresponding value.
V1 V2 V3
40%
30%
20%
10%
0%
10%
20%
30%
40%
INVERTER VOLTAGE, V
LEGEND:
var characteristic curve
QU curve Mode
Function Default value (Australia) Default value (New Zealand)
QU curve mode enable or disable 0
V1 voltage ratio 900 (207 V)
Q1 reactive power ratio 300 (30%*Pn)
V2 voltage ratio 957 (220 V)
Q2 reactive power ratio 300 (30%*Pn)
V3 voltage ratio 1087 (250 V)
Q3 reactive power ratio 300 (30%*Pn)
V4 voltage ratio 1152 (265 V)
Q4 reactive power ratio 300 (30%*Pn)
Example: Set the ratio of V1 voltage to 1100, corresponding to the rated voltage of 230 V, V1 = 230
* 110% = 253 V.
Example: Set Q1 reactive power ratio to 300, corresponding reactive power Q1=30%* rated
power.
5.6.4 Power Recovery Rate
The power recovery rate can be modified by Modbus communication, specifically according to
the inverter Modbus address and Modbus register value, according to the set range to set the
corresponding value.
Function The default value (Australia & New Zealand)
Power recovery rate Settings
16 (16%Pn/min)
If you need to change the above Settings, please contact our after-sales service.
25
V4 V1 V2 V3
40%
30%
20%
10%
0%
10%
20%
30%
40%
INVERTER VOLTAGE, V
LEGEND:
var characteristic curve
Setting range
0 "0"or"1"
900 (207 V) 0~2000
300 (30%*Pn) 0~600
957 (220 V) 0~2000
300 (30%*Pn) 0~1500
1061 (244 V) 0~2000
300 (30%*Pn) 0~1500
1109 (255 V) 0~2000
300 (30%*Pn) 0~600
Setting range
5~100

6 Troubleshooting

If the Inverter is not able to work properly, please refer to the following instructions before
contacting your local service. If any problems arise, the red (FAULT) LED indicator on the front
panel will light up and the LCD screen will display relevant information. Please refer to the
following table for a list of error messages and associated solutions.
V4
Type of fault
Register
40650
40653
40654
System
40655
Failure
40656
40657
40658
40659
40660
Register
40536
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.
Isolation Failure
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.
1. The ground current is too high.
2. Take off the inputs from the PV panel and check the peripheral AC system.
3. When the problem is cleared, reconnect the PV panel and check the Inverter
Ground I Failure
status.
4. Contact local service office for help if the problem still persist.
1. The PV Inverter will automatically restart within 5 minutes if the grid returns to
normal.
Vac Failure
2. Make sure grid voltage conforms to specifications.
3. Make sure neutral (N) wire and PE wire are well connected.
4. Contact local service office for help if the problem still persist.
1. Grid is not connected.
Fac Failure 2. Check grid cable connection.
3. Check availability of grid.
1. Grid is not connected.
Utility Loss 2. Check if the power cable is connected with grid.
3. Check the availability of power from the grid.
1. Check whether PV open circuit voltage is higher or too close to the maximum
input voltage.
PV Over Voltage
2. If the problem still persist when PV voltage is less than the maximum input
voltage, contact local service office for help.
1. The internal temperature is higher than normal specified value.
2. Reduce ambient temperature.
Over Temperature
3. Move the inverter to a cool place.
4. If the problem still exists, contact local service office for help.
Troubleshooting
26