Chuẩn đoán kỹ thuật Inverter Growatt phần 2

Tài liệu này áp dụng cho các Inverter Growatt, 1 pha, các model từ Growatt1000S -> 5000MTLS, các mã lỗi: 100, 101, 102, 121, 116, 117, 118, 119, 120 và 122

The inverter will display a fault message on the LCD with the LED indicator turning red in case there is any system abnormal or inverter abnormal occurrence. All faults will stop the inverter feeding power to public grid immediately and wait until the fault is cleared.

In general, the operator should respond to the fault as follows:

1. The cause of the fault should be sought by referring to appropriate chart below.
2. If the problem cannot be rectified, please contact Growatt for assistance.

1. Error: 100
When inverter displays Error 100, it means the internal 2.5V reference voltage is faulty.
Please refer to Appendix A to replace the control board, if the error still exists, please contact Growatt service to replace the inverter.

2. Error: 101 or Error: 102 or Error: 121
When inverter displays Error 101 or Error 121, it means the two CPU units have something wrong with the communication to each other; when the inverter displays Error 102, it means the sampled data of the two CPU is inconsistent.
a. Turn off the DC switch and make the inverter totally shut down, and then turn on DC switch to check if the error still exists.
b. If the error still exists, please refer to Appendix A to replace with a new control board.

A1. Error: 111 (only for MTL-S series)
When inverter displays Error : 111, it means PE abnormal.
a. Check PE wire, to ensure that the PE line contact good.
b. Check the L and N reverse or not
c. Restart inverter.
d. If error message still exists , contact Growatt.

3. Error: 116
When inverter displays Error: 116, it means there is failure in reading or writing EEPROM.
a. Confirm when the error will appear, if it occurred in the morning, please contact Growatt for support. Otherwise go to next step.
b. Restart the inverter, check whether the error still exists.
c. If the fault is sustained, please refer to Appendix A to replace with a new control board.

4. Error: 117
There is something wrong with the relay circuit.
Restart the inverter, if the error still exists, please contact Growatt service to replace the inverter.

5. Error: 118
When inverter displays Error: 118, it means the inverter failed to initialize the model.
If a fault is detected during initialization, there will be a model fault displayed in LCD screen.
a. To clear the fault, you need to reset the values with the parameter setting tool Shine Bus.
² The parameter Model consists of 4 sections:
Model: PF U1 Mx S1(except for Italy and Hungary in Europe)
² The meaning of Mx is shown in table 1 in Appendix A.

Chuẩn đoán kỹ thuật Inverter Growatt phần 2

² Please restart the inverter 2 or 3 times after the mode is set successfully. When starting up, please check whether the error remains.
b. If the error is sustained, please refer to Appendix A to replace with a new control board.

6. Error: 119
When the inverter shows Error 119, it means something may be wrong with the GFCI device inside the inverter.
a. Restart the inverter 2 or 3 times, check whether the error still exists.
b. If the error still exists, please contact Growatt service to replace the inverter.

7. Error: 120
When the inverter shows Error 120, it means there is something wrong with the current sensor.
Restart the inverter, if the error still exists, please contact Growatt service to replace the inverter.

8. Error: 122
When the inverter shows Error 122, it means the Bus voltage is out of range.
a. Restart the inverter, and check whether the error still exists.
b. Turn off AC breaker, measure the voltage between PV+ and PV- and check whether it is within permitted DC voltage range. If it is higher than the Max allowed DC voltage, you need to reduce the quantity of PV modules.

Chuẩn đoán kỹ thuật Inverter Growatt phần 2

c. Turn on AC breaker, and read Bus voltage from LCD (PV: XXX B: XXX), if B: XXX is really too high, please record PV: XXX B: XXX, and contact Growatt service.

Chuẩn đoán kỹ thuật Inverter Growatt phần 2

Appendix A
How to replace control board
a. Disconnect DC switch and AC breaker to shutdown the inverter.
b. Remove the cover of RS232 port with a screwdriver.

Chuẩn đoán kỹ thuật Inverter Growatt phần 2

c. Unscrew the two nuts on RS232 port using a 5mm sleeve screwdriver.

Fig.20 Two nuts on RS232 port
Fig.20 Two nuts on RS232 port

d. Remove the front cover, and disconnect the connectors shown below.

Fig.21 Connectors on control board
Fig.21 Connectors on control board

e. Unscrew the four screws connecting the control board to the main board.

Fig.22 Screws on Control board
Fig.22 Screws on Control board

f. Replace the control board with a new one and screw it using the four screws,
g. Reconnect all the connectors on the board and replace the RS232 port
h. Assemble remain parts in reverse order of the disassemble procedure.
i. Turn on the DC switch, and reset the inverter’s Model and serial number via Shine Bus software. Remember to click the “Set” button to save the change.

 

Fig.23 Shine Bus set Model and serial number
Fig.23 Shine Bus set Model and serial number

² The inverter’s model is made up of PFU1MxS3 four sections, the Mx sections should be preset according to the power level of the inverter. The meaning of Mx is shown in below tables.

Chuẩn đoán kỹ thuật Inverter Growatt phần 2

² The serial number can be found in the label attached to the side of the inverter.

Chuẩn đoán kỹ thuật Inverter Growatt phần 2

j. Turn on AC breaker and start the inverter.

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