Sungrow SG3600UD - Page 83

75
Fault
name
Explanation
Fault
severity
Measures
Temp-flt
The fault occurs
when the
temperature at
the air inlet is
higher than the
protective
threshold.
Major
1. Ensure the ambient temperature.
Check, with a thermodetector, whether
the present ambient temperature is within
the permissible range of the module.
2. Check that the air inlets of the inverter
and inverter are not obstructed. Replace
the filters when necessary.
3. Check, in the Stop mode, whether fans
inside the module are clogged by foreign
materials.
DC
cabinet
over-
temp
The temperature
in the DC cabinet
is excessively
high.
Major Refer to the measures for "Temp-flt".
Vac-high
The grid voltage
is higher than the
set protective
threshold.
Major
1. Tap "Set-parameters" -＞ "Pro-
parameters" on the LCD to check
whether the protection parameter is in
compliance with the local standards and
regulations.
2. Disconnect the AC switches, and
check whether the actual grid voltage is
within the normal range.
3. Check, in the Stop mode, whether the
grid voltage displayed on the LCD is
consistent with the voltage actually
measured.
Vac-low
The grid voltage
is lower than the
set protective
threshold.
Major Refer to the measures for "Vac-high".
F-fault
The grid
frequency is
abnormal.
Major
1. Tap "Set-parameters" -＞ "Pro-
parameters" on the LCD to check
whether the Protection parameter is in
compliance with the local standards and
regulations.
2. Check, in the Stop mode, whether the
grid frequency displayed on the LCD is
consistent with the actual grid frequency.
System Manual 11 Troubleshooting