7 Troubleshooting. INVT XG3-10kW, XG3-10KTL Single-phase On-grid Solar Inverter

Grid-tied single -phase solar inverter Troubleshooting

7 Troubleshooting

This chapter introduces fault alarms and codes, which are used to quickly find inverter faults.

Table 7-1 Inverter fault codes

Number Fault types

Fault code

Fault information Solution

1

PV voltage fault

01-01

01-02

Low PV voltage

High PV voltage

Check wether the PV terminal is plugged in properly

Check wether the panels are connected in series correctly

03-01 Low BUS voltage

2

BUS voltage error

03-02

03-03

High BUS voltage

BUS voltage imbalance

If the inverter does not work normally, please contact customer service

3

4

5

6

Flow failures

Thermal failure

Insulation detection fault

Drive fault

05-01

05-02

05-03

05-04

06-01

06-02

06-03

06-04

07-01

08-01

Inverter hardware flow

Inverter software flow

The BOOST hardware flow

The BOOST software flow

Inverter over temperature

BOOST over temperature

Heatsink over temperature

Ambient over temperature

Insulation detection fault

Drive fault

If the fault is reported repeatedly, firstly check whether there is capacitive or inductive equipment on the grid side repeatedly cutting into the grid; if not, please contact customer service

Check whether the air inlet and outlet are blocked and whether the ambient temperature is too high

Check for obstacles around the inverter

Check whether the panel wiring terminals have entered the water, or are damaged and exposed to the ground

Please contact customer service

09-01 DSP1 and ARM SCI fault

7

Communica tion fault

09-02 DSP2 and ARM SCI fault


09-03 DSP1 SPI fault

30

Grid-tied single -phase solar inverter

Number Fault types

Fault code

09-04

09-05

10-01

8

9

10

Leakage current fault

Relay fault

DC fault

10-02

10-03

10-04

11-01

11-02

14-01

14-02

14-03

19-01

19-02

11

Consistency failure

12

Mains voltage fault

19-03

19-04

19-05

31-01

31-02

33-01

13

14

15

Mains frequency fault

Leakage current self-checkin g of failure

Auxiliary power failure

33-02

43-01

45-01 Auxiliary power off

Troubleshooting

Fault information

DSP2 SPI fault

DSP1 and MCU SCI fault

The static leakage current is high

30mA mutation failure



Relay open

Relay short circuit

DCI R phase fault

DCI S phase fault

T the DCI fault

Inconsistent AC voltage detection

Inconsistent BUS voltage detection

Inconsistent ISO voltage detection

Inconsistent PV voltage detection

GFCI inconsistent

Low mains voltage

Mains voltage high

Mains frequency is low

Mains frequency is high

Solution

Check whether the panel wiring terminals have entered the water, or are damaged and exposed to the ground




Use a multimeter Check whether the grid voltage at the inverter end is normal

Check with a multimeter whether the grid frequency at the inverter end is normal

Leakage current sensor fault



31


Table 7-2 Inverter warning code

Number Alarm types

Alarm code

1

Fan speed is low

01-01

01-02

01-03

01-04

2

Lightning protector

02-01

03-01

03-02

03-03

03-04

3

String current

03-05

03-06

03-07

03-08

Troubleshooting

Alarm information

Fan1

Fan2

Fan3

Fan4

Lightning protector

String 1

String 2

String 3

String 4

String 5

String 6

String 7

String 8

Display information



Unplug the faulty string, and check if the positive and negative terminals are reversed with a multimeter.

32


If any problem, please contact with the supplier and provide following information:

 Model of the inverter:

 Serial No. of the inverter:

 System version:

——version 1:

——version 2:

——MCU software version:

 Fault code:

;

;

;

 Fault description

Troubleshooting

;

;

;

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7 Troubleshooting. INVT XG3-10kW, XG3-10KTL Single-phase On-grid Solar Inverter

7 Troubleshooting

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7 Troubleshooting. INVT XG3-10kW, XG3-10KTL Single-phase On-grid Solar Inverter