- Instruction Manual for ESS R050096 -
43
5.3 Inverter troubleshooting
Error code
Description
Solutions
F13
Working mode change
Inverter work mode changed
1.wait for a minute and check;
2. Seek help from us, if can't go back to normal state.
F18
AC over current fault of
hardware
AC side over current fault
1.Please check whether the backup load power and
common load power are within the range;
2.Restart and check whether it is in normal;
3. Seek help from us, if cannot go back to normal state.
F20
DC over current fault of
the hardware or LC over
current
DC side over current fault
1.Check PV module connect and battery connect;
2.Turn off the DC switch and AC switch and then wait
one minute, then turn on the DC/AC switch again;
3. Seek help from us, if cannot go back to normal state.
F23
AC leakage current is
transient over current
Leakage current fault
1.Check the cable of PV module and inverter;
2.Restart inverter;
3. Seek help from us, if cannot go back to normal state.
F24
DC insulation
impedance failure
PV isolation resistance is too low
1.Check the connection of PV panels and inverter is
firmly and correctly;
2.Check whether the PE cable of inverter is connected to
ground;
3. Seek help from us, if cannot go back to normal state.
F26
The DC busbar is
unbalanced
1.Please wait for a while and check whether it is normal;
2.If still same, and turn off the DC switch and AC switch
and wait for one minute and then turn on the DC/AC
switch;
3. Seek help from us, if cannot go back to normal state.
F35
No AC grid
No Utility
1.Please confirm grid is lost or not;
2.Check the grid connection is good or not;
3.Check the switch between inverter and grid is on or
not;
4. Seek help from us, if cannot go back to normal state.
F42
AC line low voltage
Grid voltage fault
1.Check the AC voltage is in the range of standard
voltage in specification;
2.Check whether grid AC cables are firmly and correctly
connected;
3. Seek help from us, if cannot go back to normal state.
