45 46
If the error message is displayed despite the above checking
suggestions passed, contact dealer or Growatt.
Information
PV isolation detection
The ISO function a protection mechanism. The inverter measures the
resistances between both the positive pole and negative pole of PV panel and
earth.
Either of the measured value is lower than the limit, the PV inverter will not
connect to grid, the output relay will stay open, and show 'PV isolation low'. The
limited value is determined by the standards.
The simplified principle of the isolation resistance measurement is described as
below:
GFCI function
GFCI is short for Ground-Fault Circuit Interrupter which is used for preventing
from being electric shock. The inverter is equipped with integrated RCD
(Residual Current Protective Device) and RCM (Residual Current Operated
Monitor). The current sensor will detect the volume of the leakage current and
compare it with the pre-set value. If the leakage current is above the permitted
range, the RCD will disconnect the inverter from the AC load.
11.2 Errors(E)
Errors(E) codes identify a possible equipment failure, fault or incorrect inverter
setting or configuration. Any and all attempts to correct or clear a fault must be
performed by qualified personnel. Typically, the(E) code can be cleared once the
cause or fault is removed. Some of the(E) codes, Error as indicated in the table
below, may indicate a fatal error and require you to contact the supplier to replace
a new one.
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.
Error: 112
AFCI fault. System PV
circuitry exist arc.
1.Check the system
circuitry remove fault,
restart inverter.
2.If error message still
exists, contact Growatt.
Error: 114
AFCI Device Damage
Contact Growatt.
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