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Error code
Description
Ongrid - Three Phase (LV Model)
F40
DC over current
Hardly appear the code. Never ever happened so far
.
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.
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.
F55
DC busbar voltage is too high
1. Check PV voltage and Ubus voltage and its detec�on circuit.
If the PV input voltage exceeds the limit, please reduce the
number of solar panels in series.
2. For Ubus voltage, please check the LCD display.
F56
DC busbar voltage is too low
1. It tells the PV input voltage is low and it always happens in the
early morning.
2. Check PV voltage and Ubus voltage. When inverter is running,
then showing F56, maybe Loss of driver or need update
firmware.
3. Restart the inverter, if the fault s�ll exists, contact your
installer.
F43
AC Line V,W 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.
F45
AC Line U,V 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.
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
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.
F46
AC Line U,V low voltage
Check the AC voltage protec�on se�ng.
F47
AC Over frequency
Check the frequency protec�on se�ng.
F57
AC reverse irriga�on
AC reverse irriga�on.
F58
AC grid U over current
Hardly appear the code. Never ever happened so far.
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.
F51
W phase grid current DC
component over current
Hardly appear the code. Never ever happened so far.
F52
AC inductor A, phase current
DC current high
Hardly appear the code. Never ever happened so far.
F53
AC inductor B, phase current
DC current high
Hardly appear the code. Never ever happened so far.
F54
AC inductor C, phase current
DC current high
Hardly appear the code. Never ever happened so far.