Goodwe SMT Series - AC Output Specifications; Inverter Efficiency Ratings

09 Maintenance
User Manual V1.3-2023-01-31
44
Type of fault Alarm Troubleshooting
System
Failure
Isolation Failure
1.Disconnect DC switch, take o 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.
3. If impedance is larger than 100 kΩ, please contact local service
oce.
4. Take o AC connector, measure the impedance between
neutral and PE. If it is larger than 10 kΩ, please check AC wiring.
Ground I Failure
1. Disconnect DC switch, check the insulation of PV string wiring
to earth.
2. Reconnect the DC switch again.
3. If the problem still exists, please call the local service oce.
AC Voltage Failure
1. Disconnect DC switch, take o AC connector, measure the
voltage between line and neutral in connector, make sure if it
conforms to the grid-connected specication of inverter.
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 oce.
AC Frequency Failure
1. The PV inverter will automatically restart if the Fac returns to
nornal.
2. If the problem still exists, please call the local service oce.
System
Failure
Utility Loss
1. Disconnect the DC switch, take o AC connector, measure the
voltage between line and neutral in connector, make sure if it
conforms to the grid-connected specication of inverter.
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 oce.
PV Over Voltage
1. Disconnect the DC switch, take o DC connector, check PV
string
voltage, check if it exceeds the input voltage in inverter
specication.
2. If it does, please recongurate PV panel string.
3. If the problem still exists, please call the local service oce.
System
Failure
Over Temperature
1. Disconnect the DC switch, take o DC connector, check PV
string
voltage, check if it exceeds the input voltage in inverter
specication.
2. If it does, please recongurate PV panel string.
3. If the problem still exists, please call the local service oce.