Sungrow SG33CX User Manual page 83

User Manual
Fault
Description
code
Low
insulation
resistance, which
is
caused by
039
insulation
ground
module/cable or by
rainy and damp
environment.
040-042 Device anomaly
Low
temperature,
ambient
temperature
043 lower
temperature
which the inverter
can
normally.
044-046 Device anomaly
PV
configuration
047
abnormal, PV input
mode error
048-050
053-056 Device anomaly
059-060
Check method
Wait for the inverter to return to normal. If the
fault occurs repeatedly:
1. Check whether the ISO resistance
system protection value is excessively high via the
APP or the LCD, and ensure that it complies
with the local regulations.
generally 2. Check the resistance to ground of the
poor string and DC cable. Take correction
to measures in case of short circuit or damaged
of the insulation layer.
3. If the cable is normal and the fault occurs
on rainy days, check it again when the
weather turns fine.
4. If the fault is not caused by the foregoing
reasons and still exists, contact Sungrow
Service.
Wait for the inverter to return to normal.
Disconnect the AC and DC switches, and
reconnect the AC and DC switches 15
minutes later to restart the inverter.
If the fault still exists, contact Sungrow
Service.
ambient
the
is Stop and disconnect the inverter. Restart the
than the inverter when the ambient temperature falls
at within the operation temperature range.
operate
Wait for the inverter to return to normal.
Disconnect the AC and DC switches, and
reconnect the AC and DC switches 15
minutes later to restart the inverter.
If the fault still exists, contact Sungrow
Service.
input
Stop and disconnect the inverter. Reset the
input mode of the PV array.
Wait for the inverter to return to normal.
Disconnect the AC and DC switches, and
reconnect the AC and DC switches 15
minutes later to restart the inverter.
If the fault still exists, contact Sungrow
Service.
9 Troubleshooting and Maintenance
73