46
45
Residual I High
Error: 201
Leakage current too high
1.Restart the invert.
2.If error message still exists,
contact Growatt.
PV Isolation Low
Error: 203
AC V Outrange
Error: 300
No AC connection
Error: 302
PE abnormal
Error: 303
Insulation problem
Utility grid voltage is out
of permissible range.
No AC connection
1.Check if panel enclosure ground
properly.
2.Check if inverter ground
properly.
3.Check if the DC breaker gets wet.
4.Check the impedance of PV (+) &
PV (-) between ground (must be
more than 30 K
Ω
). If the error
message is displayed despite the
above checking passed, contact
Growatt.
1.Please switch off DC switch.
2.Check AC wiring, especially
neutral and ground wire.
3.Check grid voltage is complied
with local grid standard. Restart
inverter, if problem still exist,
contact Growatt.
1.Check AC wiring.
2.Check the status of AC breaker.
AC F Outrange
Error: 304
Utility grid frequency out
of permissible range.
1.Please switch off DC switch.
2.Check AC wiring, especially
neutral and ground wire.
3.Check grid frequency is complied
with local grid standard.
4.Restart inverter, if problem still
exist,contact Growatt.
Voltage of Neutral and PE
above 30V.
1.Check the voltage of Neutral and
PE.
2.Check AC wiring.
3.Restart inverter, if error message
still exisits,contact Manufacturer.
Restart inverter, repeat Auto Test,
if problem still exist, contact
Growatt.
Auto Test Failed
Error: 407
Auto test didn't pass.
PV Voltage High
Error: 202
The DC input voltage is
exceeding the maximum
tolerable value.
1.Disconnect the DC switch
immediately.
2.Check the voltage of each PV
string with multimerter.
3.If the voltage of PV string is
lower than 550V, contact Growatt.
11.3 Inverter warning
Warning code
Meanings
Suggestion
Warning202
Warning 203
Warning204
Warning 205
Warning207
Warning 401
Warning404
Warning405
DC SPD function abnormal
PV1,PV2 or PV3 Circuit short
Dryconnect function abnormal
PV1,PV2 or PV3 boost broken
USB over-current
Inverter communicates
with Meter abnormal
EEPROM abnormal
Firmware version is not
consistent
1.After shutdown,Check the DC SPD.
2.If error message still exists,contact
manufacturer.
1.Check the PV panel polarity.
2.Restart the inverter. If the warning
still exist, please contact Growatt
customer service to replace the
POWER board.
Restart the inverter. If the warning
still exist, please contact Growatt
customer service to replace the power
board.
Restart the inverter. If the warning
still exist, please contact Growatt
customer service to replace the M3
board.
Uptate the right version firmware
1.After shutdown,Check the dry
Dryconnect wiring.
2.If the error message still exists,
contact manufacturer.
1.Unplug the U stick or monitor.
2.Re-access U stick or monitor after
shutdown.
3.If the error message still exists,
contact manufacturer.
1.Check if the meter is on.
2.Check the inverter and the meter
connection is normal .
