Growatt SPF 3000TL LVM - Troubleshooting: System Faults, CAN, and Restart; Over Current, Bus Voltage, and Output Faults; Battery Connection and Negative Power Faults; CAN Fault, Host Loss, and Restart Notes

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Fault code 51
Over current or surge.
Restart the unit, if the error happens again, please
return to repair center.
Fault code 52
Bus voltage is too low.
Fault code 55
Output voltage is unbalanced
Fault code 56
Battery is not connected well
or fuse is burnt.
If the battery is connected well, please return to
repair center.
Fault code 60
Negative power fault
1. Check whether the AC output connected to the
grid input.
2. Check whether Program 8 settings are the same for
all parallel inverters
3. Check whether the current sharing cables are
connected well in the same parallel phases.
4. Check whether all neutral wires of all parallel units
are connected together.
5. If problem still exists, contact repair center.
Fault code 80
CAN fault
1. Check whether the parallel communication cables
are connected well.
2. Check whether Program 23 settings are right for the
parallel system.
3. If problem still exists, contact repair center
Fault code 81
Host loss
Note: To restart the inverter, all power sources need to be disconnected. After the LCD screen light is off, only use the
battery to boot.