GFDI _Relay_Failure
1. When inverter is in Split phase(120/240Vac) or three-phase
system (120/208Vac) system, the backup load port N line
needs to connect ground;
2. If the fault still exists, please contact us for help.
Working mode change
1. When the grid type and frequency changed it will report F13;
2. When the battery mode was changed to “No battery” mode,
it will report F13;
3. For some old FW version, it will report F13 when the system
work mode changed;
4, Generally, it will disappear automatically when shows F13;
5. 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;
6. Seek help from us, if can not go back to normal state.
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 can not go back to normal state
DC over current fault of
the hardware
DC side over current fault
1. Check PV module connect and battery connect;
2. When in the off-grid mode, the inverter startup with big power
load, it may report F20. Please reduce the load power connected;
3. Turn off the DC switch and AC switch and then wait one
minute,then turn on the DC/AC switch again;
4. Seek help from us, if can not go back to normal state.
Tz_EmergStop_Fault
Please contact your installer for help.
AC leakage current is
transient over current
Leakage current fault
1. Check PV side cable ground connection.
2. Restart the system 2~3 times.
3. If the fault still exists, please contact us for help.
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 can not go back to normal state.
The DC busbar is
unbalanced
1. Please wait for a while and check whether it is normal;
2. When the hybrid in split phase mode, and the load of L1 and
load of L2 is big different, it will report the F26.
3. Restart the system 2~3 times.
4. Seek help from us, if can not go back to normal state.
Parallel CANBus fault
1. When in parallel mode, check the parallel communication cable
connection and hybrid inverter communication address setting;
2. During the parallel system startup period, inverters will report F29.
when all inverters are in ON status, it will disappear automatically;
3. If the fault still exists, please contact us for help.
ACOvercurrent fault
1. Check the backup load connected, make sure it is in allowed
power range;
2. If the fault still exists, please contact us for help.
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 can not go back to normal state.
Parallel system stop
1. Check the hybrid inverter working status. If there’s 1 pcs
hybrid inverter is in OFF status, the other hybrid inverters
may report F41 fault in parallel system.
2. If the fault still exists, please contact us for help.
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 can not go back to normal state.
AC over frequency
Grid frequency out of range
1. Check the frequency is in the range of specification or not;
2. Check whether AC cables are firmly and correctly connected;
3. Seek help from us, if can not go back to normal state.
AC lower frequency
Grid frequency out of range
1. Check the frequency is in the range of specification or not;
2. Check whether AC cables are firmly and correctly connected;
3. Seek help from us, if can not go back to normal state.
DC busbar voltage is
too low
Battery voltage low
1. Check whether battery voltage is too low;
2. If the battery voltage is too low, using PV or grid to charge the
battery;
3. Seek help from us, if can not go back to normal state.
BMS communication fault
1. it tells the communication between hybrid inverter and battery
BMS disconnected when”BMS_Err-Stop” is active;
2. if don’t want to see this happen, you can disable
“BMS_Err-Stop” item on the LCD;
3. If the fault still exists, please contact us for help.
ARC fault
1. ARC fault detection is only for US market;
2. Check PV module cable connection and clear the fault;
3. Seek help from us, if can not go back to normal state.
Heat sink high temperature
failure
Heat sink temperature is too high
1. Check whether the work environment temperature is too high;
2. Turn off the inverter for 10mins and restart;
3. Seek help from us, if can not go back to normal state.