Troubleshooting - Goodwe UT Series User Manual

09 Maintenance

9.4 Troubleshooting

Perform troubleshooting according to the following methods. Contact the after-sales service if
these methods do not work.
Collect the information below before contacting the after-sales service, so that the problems can
be solved quickly.
1. Inverter information like serial number, software version, installation date, fault time, fault
frequency, etc.
2. Installation environment, including weather conditions, whether the PV modules are
sheltered or shadowed, etc. It is recommended to provide some photos and videos to assist
in analyzing the problem.
3. Utility grid situation.
No. Fault
SPI Comm
1
Fail
2 EEPROM Fail
3 Fac Fail
4 DC-SPD
Cause
1. The chip is not
powered on.
2. The program version
of the chip is wrong.
The internal memory
Flash is abnormal.
The utility grid frequency
is out of the allowed
range.
The inverter is struck by
lightning.
User Manual V1.2-2024-07-19
Solutions
Disconnect the AC output switch and DC input
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
1. If the problem occurs occasionally, the
utility grid may be abnormal temporarily.
The inverter will recover automatically after
detecting that the utility grid is normal.
2. If the problem occurs frequently, check
whether the grid frequency is within the
permissible range.
• Contact the local power company if the grid
frequency exceeds the permissible range.
• Contact the dealer or the after-sales
service if the grid frequency is within the
permissible range.
1. The inverter is struck by lightning.
2. Disconnect the AC output switch and DC
input switch, then connect them 5 minutes
later. Contact the dealer or the after-sales
service if the problem persists.
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