range of specification or not.
Restart inverter and SP-CT, reconnect.
Warning203 PV1 or PV2 Circuit short
Check the positive and negative of PV input is
reversed or not.
Reinserted the PV terminal, please contact Growatt
service center if restart can’t solve the problem.
Warning506
Battery temperature out of
specified range for charge or
discharge
Check the environment temperature of battery is in
the range of specification or not.
AC V Outrange
Grid voltage fault.
Please refer to the local grid
standard for more details of the
grid frequency.
Check the AC voltage is in the range of standard
voltage in specification.
Check the grid connection is good or not.
AC F Outrange
Please refer to the local grid
standard for more details for the
grid voltage.
Check the frequency is in the range of specification
or not.
Restart inverter.
Please contact Growatt service center if restart can’t
solve the problem.
PairingTimeOut Communication fault
Check the distance of SP-CT and inverter is in the
range of specification or not.
Restart inverter and SP-CT, reconnect.
CT LN Reversed LN Reversed
Check the L line and N line of SP-CT is reversed or
not.
Check the PE of SP-CT is connected well or not.
BMS COM Fault Communication fault
Check the lithium Battery is open or not.
Check the connection of lithium Battery and inverter
is good or not.
Battery reversed Battery terminals reversed
Check the positive and negative of battery is
reversed or not.
BAT NTC Open
NTC open
(only for lead-acid battery)
Check the temperature of lead-acid battery is
installed or not.
Check the temperature of lead-acid battery is
connected well or not.
Battery Open
Battery terminal open
(only for lithium battery)
Check the battery connection is good or not.
Check the switches between the battery and inverter
are all on or not.
Over Load
EPS output overload warning.
If this warning occurred three
time. Off-grid function will be
locked one hour and output
power again.
Please reduce the load of EPS output.
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