Wifi Reset & Wifi Reload; System Operation; Error Code; Troubleshooting - Goodwe MT series User Manual

MODEL:
Enter long
Set Safety
GW 50K-MT
German
Esc
V1.00.00
(5)Operation of Display when start up.
When the input voltage reaches inverter turn-on voltage, LCD displays 'waiting'. If the grid is
accessible, 'Checking xxx Sec'(The time is decided by the grid connection standards from different
country) will be shown up in 5sec, During the counting, the inverter is self-checking, when it shows
'00Sec' you can hear the sound from the motion of the relay, LCD displays 'Normal' afterwards. The
instant power output will be shown at the right bottom of LCD.
4.2 WiFi Reset & WiFi Reload
1.Choose 'WiFi Reset ' in level 2, press 'Enter' for 2 seconds to reset inverter WiFi modular; wait for a
while, operation result will show on display, the function can be applied when inverter is unable to
connect to router or monitor server.
2.Choose 'WiFi Reload' in level 2, press 'enter' button for 2 seconds, The initial setting of WIFI modular
will be reload. Wait for a while, operation result will show on display, the function can be applied when
inverter is unable to connect to WiFi modular. Once WiFi modular restore initial setting, WiFi modular
need be reset again.
Notice：This function is only applies to the inverter equipped with WiFi modular .

4.3 system operation

1. Make sure the AC circuit is connected and AC breaker is turned off.
2. Make sure the DC cable between inverter and PV string is connected, and the PV voltage is normal
3. Turn on the DC switch, and set safety according to the local regulation.
4. Turn on the AC breaker. Check the inverter work normal.
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Setting is
Set Safety
Down/Up Enter long
successful
Brazil

4.4 Error code

The error message in below diagram will be displayed on the LCD if a fault occurs.
Error code Error message Description
SPI Failure Internal communication failure
01
EEPROM R/W Failure Memory chip failure
02
Fac failure Grid Frequency exceed the inverter limit
03
Relay Check Failure Relay self-checking failure
07，25
12 LCD Communication Failure Communication error occurs between LCD DSP and the Master DSP.
13 DC Injection HIGH The DC component of AC current exceed inverter limit
Isolation Failure
14 Insulation Resistance between the ground and the panel is too low
Vac Failure Grid voltage exceed the inverter limit
15
External FAN Failure External Fan Failure
16
PV OVER Voltage PV Array voltage is exceed the inverter limit
17
OVER Temperature Over temperature on the case
19
IFAN Fault Internal FAN Failure
20
DC BUS HIGH BUS voltage over high
21
22 Ground I Failure Residual current protection
23 Utility Loss Grid disconnection/fault
REF 1.5V Failure 1.5V reference voltage exceeds the limit
30
AC HCT Failure AC current sensor failure
31，24
32，26 GFCI Failure Leakage current detection circuit Failure。
Device Failure Internal Device Failure
Others
4.11 Special Adjustable Setpoints
The inverter has field adjustable function,such as trip points,trip times, reconnect times,active and invalid of QU
curve,PU curve. It is adjustable through special software ,if you want to use it ,please contact with after sales.
The methods document of using the software can download from goodwe website or contact with after sales.

5 Troubleshooting

If the Inverter is not able to work properly, please refer to the following instructions before contact your local service. Should any
problems arise, the red (FAULT) LED indicator on the front panel lights up and the LCD screen will display relevant information. Please
refer to the following table for a list of error message and associated solutions.
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