Goodwe MS Series User Manual

37
User Manual V1.0-2022-10-30
09 Maintenance
Type of fault Troubleshooting
Inverter
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 earth.
3. If impedance is large than 100 kΩ, please contact local service
oce.
4. Take o AC connector, measure the impedance between
neutral
Ground I
Failure
1. The ground current is too high.
2. Unplug the inputs from the PV generator and check the
peripheral AC system.
3. When the problem is cleared, reconnect the PV panel and check
the Inverter status.
4. Contact local service oce for help if the problem still persist.
Vac Failure
1. The PV Inverter will automatically restart within 5 minutes if the
grid returns to normal.
2. Make sure grid voltage conforms with the specication.
3. Make sure neutral (N) wire and PE wire are connected well.
4. Contact local service oce for help if the problem still persist.
Fac Failure
1. Grid is not connected.
2. Check grid connection cables.
3. Check availability of grid.
Utility Loss
1. Not connect to the grid.
2. Check if the power grid is connected to cable.
3. Check the availability of power grid.
PV Over
Voltage
1. Check if the PV open circuit voltage is higher or too close to the
maximum input voltage or not.
2. If the problem still persist when PV voltage is less than the
maximum input voltage, contact local service oce for help.
Over
Temperature
1. The internal temperature is higher than normal value specied.
2. Reduce ambient temperature.
3. Move the inverter to a cool place.
4. If the problem still exists, contact local service oce for help.

Goodwe MS Series Specifications

General

Power Range	3-10 kW
MPPT	2
AC Voltage Range	180-280 V
Protection Level	IP65
Cooling Method	Natural convection
Model	MS Series
Rated Output Current	34.8 A
Operating Temperature Range	-25°C to 60°C
Communication	Wi-Fi / Ethernet