ID66
ID65
UnrecoverHwAcOCP
UnrecoverBusOVP
ID65-ID70 are internal faults of inverter, turn OFF the
“DC switch”, wait for 5 minutes, then turn ON the
“DC switch”. Check whether the fault is rectified. If
no, please contact technical support.
The grid current is too
h i g h , a n d h a s c a u s e
unrecoverable hardware
fault
The bus voltage is too
high,and has cause
unrecoverable fault
ID83
UnrecoverPvConfigSetWrong
Reserved
ID73
I
ID71
D71-
Reserved
ID67
BusUVP
ID25
BusOVP
ID26
VbusUnbalance
ID27
DciOCP
ID28
ConsistentFault_VGrid
ID49
OverTempFault_Env
ID59
OverTempFault_Boost
ID58
ConsistentFault_FGrid
ID50
ConsistentFault_DCI
ID51
ConsistentFault_GFCI
ID52
SpiCommLose
ID53
PvIsoFault
ID56
OverTempFault_Inv
ID57
SciCommLose
ID54
RelayTestFail
ID55
59
60
ID26-ID27 are internal faults of inverter, turn OFF the
“DC switch”, wait for 5 minutes, then turn ON the
“DC switch”. Check whether the fault is rectified. If
no, please contact technical support.
Check the input mode(parallel mode/ independent
mode) setting of inverter according to Section 4.5 of
this user manual.
If the input mode is correct, turn OFF the “DC
switch”, wait for 5 minutes, then turn ON the “DC
switch”. Check whether the fault is rectified. If no,
please contact technical support.
Reserved
ID31- ID48
ID49-ID55 are internal faults of inverter, turn OFF the
“DC switch”, wait for 5 minutes, then turn ON the
“DC switch”. Check whether the fault is rectified. If
no, please contact technical support.
Reserved
PE Connect Fault
ID60
Please check whether grounding cable connected
well or not
UnrecoverIacRmsUnbalance
ID70
ID69
ID68
UnrecoverIpvUnbalance
UnrecoverVbusUnbalance
UnrecoverOCPInstant
ID74-ID77 are internal faults of inverter, turn OFF the
“DC switch”, wait for 5 minutes, then turn ON the
“DC switch”. Check whether the fault is rectified. If
no, please contact technical support.
OverTempDerating
ID81
Reserved
ID78- ID80
UnrecoverRelayFail
ID77
UnrecoverREADEEPROM
ID76
UnrecoverWRITEEEPROM
ID75
UnrecoverIPVInstant
ID74
Reserved
ID82
OverFreqDerating
RemoteDerating
RemoteOff
ID84
ID85
UnderFrequencyDerating
inverter automatically reduce the output
power when the frequency of electrical grid is too low
If the PV array configuration is correct (no ID5 fault),
the possible cause is that the solar irradiance is too
low. inverter automatically returns to normal operating
status after the solar irradiance returns to normal level.
Check the insulation resistance between the PV array
and earth(ground), if a short circuit occurs, rectify the
fault.
Ensure the installation position and installation
method meet the requirements of Section 3.4 of this
user manual.
Check whether the ambient temperature of the
installation position exceeds the upper limit. If yes,
improve ventilation to decrease the temperature.
Check whether the ID90~ID92 fault (fan fault) exist,
if yes, please replace the corresponding fan.
Ensure the installation position and installation
method meet the requirements of Section 3.4 of this
user manual.
Check whether the ambient temperature of the
installation position exceeds the upper limit. If yes,
improve ventilation to decrease the temperature.
Check whether the ID90~ID92 fault (fan fault) exist,
if yes, please replace the corresponding fan.
inverter automatically reduce the output power when
the frequency of electrical grid is too high.
inverter records ID83 in case of remote power
derating operation. Check the wiring of remote input
and output control signal port on the communication
board according to Section 4.4 of this user manual.
inverter records ID84 in case of remote shutdown
operation. Check the wiring of remote input and
output control signal port on the communication board
according to Section 4.4 of this user manual.
The bus voltage Is too low
The bus voltage Is too high
The bus voltage is not
balanced
The Dci is too high
Reserved
The grid voltage sampling
value between the master
DSP and slave DSP is not
consistent
T h e g r i d f r e q u e n c y
sampling value between the
master DSP and slave DSP
is not consistent
The DCI sampling value
between the master DSP
and slave DSP is not
consistent
The GFCI sampling value
between the master DSP
and slave DSP is not
consistent
The spi communication
between the master DSP
and slave DSP is fault
The Sci communication
between the control board
communication board is
fault
The relays fault
The insulation resistance is
too low
The inverter temp is too
high
The Boost temp is too high
The environment temp is
too high
Grounding cable connected
error
The grid current is
unbalance,and has cause
unrecoverable fault
The input current is
unbalance,and has cause
unrecoverable fault
The bus voltage Is
unbalance, and has
cause unrecoverable
The grid current is too
high,and has cause
unrecoverable fault
Reserved
The input current is too
high,and has happen
unrecoverable fault
T h e E E P R O M i s
unrecoverable
The EEPROM is
unrecoverable
Relay has happen
permanent fault
Reserved
The inverter has derated
because of the temperature
is too high
The inverter has derated
because of the grid
frequency too hig
The inverter has derated by
the Remote control
The inverter has shut down
because by the Remote
control
The inverter has derated
because of grid frequency
too low
ID29
ID30
SwOCPInstant
The grid current is too high
Internal faults of inverter, turn OFF the “DC switch”,
wait for 5 minutes, then turn ON the “DC switch”.
Check whether the fault is rectified. If no, please
contact technical support.
SwBOCPInstant
Ihe input current is too high
Check whether the input current is higher than the
maximum input current of inverters, then check the
input wiring, if both are correct, please contact
technical support.
Check the input mode(parallel mode/ independent
mode) setting of inverter according to Section 4.5 of
this user manual.
Incorrect input mode
ID86
Fan4 alarm
The fan4 is fault
Check whether the internal fan is not working, if so,
replace the fan, if the alarm still exits after the
replacement, please contact technical support.
20~33KTL-G2
User manual
20~33KTL-G2
User manual
