11
Trouble shooting
11
Trouble shooting
Sometimes, the PV inverter does not work normally, we recommend the following
solutions for common troubleshooting. The following table can help the technician
to understand the problem and take action.
Error message
Description
Suggestion
No AC Connection
No utility grid
connected or utility
grid power failure.
AC V Outrange
Utility grid voltage
is out of
permissible range.
AC F Outrange
Utility grid
frequency out of
permissible range.
1.Check AC wiring,
especially the ground wire
2.ContactGrowatt.
1.Check grid typ and voltage.
2.If the error message still
exists despite the grid voltage
being within the tolerable
range, contact Growatt.
1.Check grid frequency.
2.If the error message is
displayed despite the grid
frequency being within the
tolerable range, contact
Growatt.
Over Temperature
Temperature
outrange
1.check the inverter operation state
2.If the error message is displayed
still,please contact Growatt.
PV Isolation Low
Insulation problem
1.Check if panel enclosure ground
properly.
2.Check if inverter ground properly.
3.Check if the DC breaker gets wet.
4.If the error message is displayed
despite the above checking passed,
contact Growatt.
Output High DCI
Output current DC
offset too high
1.Restart inverter.
2.If error message still exists, contact
Growatt.
Residual I High
Leakage current
too high
1.Restart inverter.
2.If error message still exists, contact
Growatt.
PV Voltage High
The DC input
voltage is exceeding
the maximum
tolerable value.
Disconnect the DC switch
immediately.
Error: 100
2.5V reference
voltage fault
Error: 101
1.Restart inverter
2.If error message still
exists, contact Growatt.
Communication fault
Slave processor can't
receive data from
Master processor.
1.Restart inverter
2.If error message still
exists, contact Growatt.
Error: 102
Consistent fault. Data
received by Master and
Slave processor are
different. The reason can
be utility grid voltage or
frequency change
frequently.
1.Restart inverter.
2.If error message appears
frequently or error
message still exists after
replacement, check utility
grid. if you require help,
contact Growatt.
3.If error message still
exists, contact Growatt.
Error: 116
EEPROM fault
Contact Growatt.
Error: 117
Relay fault
Contact Growatt.
Error: 118
Init model fault
Contact Growatt.
Error: 119
GFCI Device Damage
Contact Growatt.
Error: 120
HCT fault
Contact Growatt.
Error: 121
Communication fault.
Master processor can't
receive data from Slave
processor.
1.Restart the inverter
2.If error message still
exists, contact Growatt.
Error: 122
Bus voltage fault
Contact Growatt.
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