SINGLE PHASE HI 3.6/5kW | Installer Manual71
Error Code Description Solutions
F08 GFDI_Relay_Failure
1. When the inverter is in a Split phase (120/240Vac) or
three-phase system (120/208Vac), the backup load port N
line needs to connect ground;
2. If the fault still exists, please get in touch with us for help.
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 side over current fault
1. Check PV module connect and battery connect;
2. When in the o-grid mode, the inverter startup with a big
power load, and it may report F20. Please reduce the load
power connected.;
3. Turn o the DC and AC switches, wait one minute, and
then turn on the DC/AC switch again.
4. Seek help from us if you can not return to a normal state.
F23
AC leakage current is trans
over current
Leakage current fault
1.Check the PV module and inverter cables.
2.You may have a faulty PV panel (earth short)
3.Restart inverter
F24
DC insulation impedance
failure
PV isolation resistance is too low
1.Check if the connection of PV panels and inverter are rmly
connected.
2.Check if the earth bond cable on inverters is connected to
the ground.
F26 The bus bar is unbalanced
1.Please wait 5 minutes to see if it returns to normal.
2. Fully reset the inverter.
F29 Parallel CANbus fault
1. When in parallel mode, check the parallel communication
cable connection and hybrid communication address set-
tings.
2. During the parallel system startup period, inverters will re-
port F29. When all inverters are in ON status, it will disappear
automatically;
3. If the fault exists, please contact us for help.
F34 AC Overcurrent fault
1. Check the backup load connected, make sure it is in al-
lowed power range;
2. If the fault still exists, please contact up for help.
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