- 40 -
Error code
Description
Ongrid - Three Phase
F25
DC feedback fault
Hardly appear the code. Never ever happened so far
.
F27
DC end insula�on error
Hardly appear the code. Never ever happened so far
.
F28
Inverter 1 DC high fault
Hardly appear the code. Never ever happened so far
.
F29
AC load switch failure
Hardly appear the code. Never ever happened so far
.
F32
Inverter 2 dc high fault
Hardly appear the code. Never ever happened so far
.
F33
AC over current
Hardly appear the code. Never ever happened so far
.
F34
AC current over load
Hardly appear the code. Never ever happened so far
.
F36
AC grid phase error
Hardly appear the code. Never ever happened so far
.
F26
The DC busbar is unbalanced
1. Check whether the 'BUSN' cable or driver board power supply
cable is loose.
2. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F31
Dc boost so� start
1. At least one Relay can't be closed. Check relays and its driver
signal. (Old inverter not have relays detec�on func�on)
2. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F35
No AC grid
1. Check AC grid voltage. Check AC voltage detec�on circuit.
Check if the AC connector in good condi�on. Check whether
the AC grid is normal in voltage.
2. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F30
AC main contactor failure
1. Check relays and AC voltage of relays.
2.
Check relays driver circuit. Check if the so�ware is not suitable
for this inverter. (Old inverter not have relays detec�on
func�on)
3. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F23
AC leakage current is transient
over current
1. This fault means the leakage current is above 30mA suddenly.
Check whether DC power supply or solar panels is ok, then
check 'Test data'-> 'diL'value is about 40; Then check the
leakage current sensor or circuit. Check test data needs
using big LCD.
2.
Restart the inverter, if the fault s�ll exists, contact your installer
or Deye service.
F24
DC insula�on impedance failure
1. Check Vpe resistance on main board or detec�on on control
board. Check PV panels is OK. Many �mes this issue is the PV
problem.
2. Check whether the PV panel (aluminum frame) is grounded
well and inverter is grounded well. Open the cover of inverter
and then check the inside ground cable is fixed well on the shell.
3.
Check if the AC/DC cable, terminal block are shorted to ground
or the insula�on is damaged.
4.
Restart the inverter, if the fault s�ll exists, contact your installer
or Deye service.
F37
AC three-phase voltage unbalance
failure
Hardly appear the code. Never ever happened so far.
F38
AC three-phase current unbalance
failure
Hardly appear the code. Never ever happened so far.
F22
Contact your installer for help.
Crash stop (if there is a stop
bu�on)
F21
Hardly appear the code. Never ever happened so far.
DC leakage flow fault