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Error code
Description
Ongrid - Single Phase
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
AC current sensor or its circuit have issue. Check if the inverter
type is not right.
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
.
F40
DC over current
Hardly appear the code. Never ever happened so far
.
F31
Dc boost so� start
Not avaiable.
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.
F39
AC over current(one cycle)
1. Check AC current sensor and its circuit.
2. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F41
AC Line W,U over voltage
Check the AC voltage protec�on se�ng. And Check if the AC
cable is too thin.Check the voltage difference between LCD and
meter.
F30
AC main contactor failure
1
.
Check relays and AC voltage of relays.
2. Check relays driver circuit.
3. Check if the so�ware is not suitable for this inverter. (Old
inverter not have relays detec�on func�on)
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.
F43
AC Line V,W over voltage
Not avaiable.
F45
AC Line U,V over voltage
Not avaiable.
F42
AC Line W,U low voltage
Check the AC voltage protec�on se�ng. Check the voltage
difference between LCD and meter. Also need to check whether
AC cables are all firmly and correctly connected.
F44
AC Line V,W low voltage
Not avaiable.
F46
AC Line U,V low voltage
Not avaiable.
F47
AC Over frequency
Check the frequency protec�on se�ng.
F48
AC lower frequency
Check the frequency protec�on se�ng.
F49
U phase grid current DC
component over current
Hardly appear the code. Never ever happened so far.
F50
V phase grid current DC
component over current
Hardly appear the code. Never ever happened so far.