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5.22. Fault Codes
To check te fault codes click on the FAULT CODES icon on the settings menu.
If any of the fault messages listed in the following table appear on your inverter and
the fault has not been removed after re-starting, please contact your local vendor or
service centre. The following information is required:
1. Inverter serial number.
2. Distributor or service centre of the inverter.
3. On-grid Power Generation Date.
4. The problem description (including the fault code and indicator status displayed on
the LCD) with as much detail as possible.
5. Owner’s contact information.
Error Code Description Solutions
F13 Working Mode Change
Inverter work mode changed
1. Reset the inverter.
2. Seek help from Sunsynk.
F18 AC over current fault or hardware
AC Slide over current fault.
1. Check if the backup load power
is within the range of the inverter.
2. Restart, and check if it is normal.
F20
DC over current fault of the
hardware
DC Over current fault
1. Check if PV module and battery
connections.
2. Reset the system.
F23
AC leakage current is trans over
current
Leakage current fault
1. Check the PV module and
inverter cables.