TSOL-MP3000/MP2250/MS3000
V1.4
- 22 -
Fault Code and Troubleshooting
Code
Fault Information
Troubleshooting
1
IsoFault
Check the PV module’s insulation to ground and make sure
that the insulation resistance to ground is greater than 200K
Ω
.
Make sure the grounding connection of the inverter is
reliable.
If this fault appears continuously, please contact the TSUN
service.
2
PV1VoltOver_Fault
Check the voltage of PV module and make sure that the
voltage is
below the maximum DC input voltage of the
microinverter.
If this fault appears continuously, please contact the TSUN
service.
3
PV2VoltOver_Fault
4
PV3VoltOver_Fault
5
PV4VoltOver_Fault
6
PV5VoltOver_Fault
7
PV6VoltOver_Fault
8
PV1VoltLow_Fault
This warning mostly appears in the morning or at dusk. It’s
normal and will disappear automatically.
If this warning appears in the daytime, please check the
connection of PV module.
If this fault appears continuously, please contact the TSUN
service.
9
PV2VoltLow_Fault
10
PV3VoltLow_Fault
11
PV4VoltLow_Fault
12
PV5VoltLow_Fault
13
PV6VoltLow_Fault
14
GridVoltOverRating
The AC power grid is abnormal. This fault will disappear
automatically when the AC power grid is normal.
If this fault appears continuously, please contact the TSUN
service.
15
GridVoltUnderRating
16
GridFreqOverRating
17
GridFreqUnderRating
18
OverTemp
Check the installation of microinverter. Make sure the
microinverter has a good heat dissipation
。
If this fault appears continuously, please contact the TSUN
service.
19
GFCIOverFault
This is an internal fault. Disconnect the AC power to restart
the microinverter.
If this fault appears continuously, please contact the TSUN
service.
20
GFCIDevice_Fault
21
RelayFail
22-23
Fault22 - 23
Check the open-circuit voltages of the module and make
sure it is below the maximum DC input voltage of the
inverter.
If this fault appears continuously, please contact the TSUN
service.
