9 Troubleshooting and Maintenance
User Manual
42
Fault
Code
Description
Troubleshooting
008
The grid frequency
exceeds
inverter
allowable upper limit.
1. Check the grid frequency.
2. If the grid frequency exceeds the
permissible range of inverter protection
parameters, ask utility grid company for
solution.
3. If the grid frequency is within the
permissible
range,
contact
Sungrow
Service Dept..
009
The grid frequency is
below
the
inverter
allowable lower limit.
010
Islanding
1. Check whether AC circuit breaker is
triggered.
2. Check whether AC cables are all firmly
connected.
3. Check whether grid is not in service.
4. If all conditions are OK and this fault still
occurs in the LCD screen, contact Sungrow
Service Dept..
011
The DC component of
AC current exceeds
inverter limit.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
012
A failure current is
detected.
1. Check the PV strings for ground fault.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
013
Grid
abnormal
is
detected
1. Wait a moment for grid recovery.
2. If the grid parameters exceed the
permissible range, ask utility grid company
for solution.
3. If the grid frequency is within the
permissible
range,
contact
Sungrow
Service Dept..
014
The
average
grid
voltage exceeds the
permissible range for
over 10 minutes.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
015
Grid
impedance
exceeds inverter’s limit
1. Check the model of the AC cables.
2. Wait a moment for inverter recovery.
3. If the fault occurs repeatedly, contact
Sungrow Service Dept..
016
The
AC
output
overloads.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
017
Unbalance
between
the
three
phase
voltages is detected
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
019
The
transient
bus
voltage is high.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
020
The bus voltage is
high.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
021
PV1 input overcurrent
is detected
Check the layout and the wiring of PV1
input.
022
PV2 input overcurrent
is detected
Check the layout and the wiring of PV2
input.
023
PV configuration mode
has changed during
inverter running.
Check the PV input configuration mode and
restart the inverter when necessary.
024
Deviation from neutral
point
voltage
is
detected.
1. Inverter will recover if the deviation value
falls below the protection limit.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
0025
Transient unbalance of
neutral point voltage is
detected
1. Inverter will recover if the deviation value
falls below the protection limit.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
026
Bus fluctuation voltage
is high.
1. This is a short-term fault. Wait a moment
for inverter recovery.
2. If the fault still exists, please contact
Sungrow Service Dept..
027
The DC current is not
balanced between the
two PV inputs for
parallel
PV
configuration mode.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
