Error 405
Relay fault
Restart inverter.
Please contact Growatt service center if restart can’t
solve the problem.
Error 123
Autotest failed
(only in Italy)
Restart inverter.
Please contact Growatt service center if restart can’t
solve the problem.
PV Isolation Low
PV isolation too low
Check the connection of PV panels and inverter is
good or not.
Check the PE of inverter is good or not.
OP Short Fault!
EPS Output Short Fault
Check the load of EPS.
Check the output of EPS. Especial not connect to grid
NTC Open
Internal temperature failed
Please contact Growatt service center
Error 406
Model set up not meet with
certification
Please check model set or check the DIP setting
Residual I High
Leakage current too high
Check the cable of inverter.
Restart inverter.
Please contact Growatt service center if restart can’t
solve the problem
Error 408
Temperature over range
Please check the temperature is in the range of
specification or not.
PV Voltage High
PV voltage higher than datasheet
Please check the voltage of PV input is in the range
of specification or not.
10 Manufacturer Warranty
This certificate represents a 5 year warranty for the Growatt products listed below. Possession of this
certificate validates a standard factory warranty of 5 years from the date of purchase.
Warranted products
This warranty is applicable solely to the following products:
Growatt SPH3000.
Growatt SPH3600.
Growatt SPH4000.
Growatt SPH4600.
Growatt SPH5000.
Growatt SPH6000.
SPH 3000TL BL-UP
SPH 3600TL BL-UP
SPH 4000TL BL-UP
SPH 4600TL BL-UP
SPH 5000TL BL-UP
SPH 6000TL BL-UP
Limited Product Warranty
(Applicable under normal application, installation, use and service conditions) Growatt warrants the above