ABB PRO-33.0-TL Series - Page 116

116 Troubleshooting
37152 Control board
overtemperature
The inverter control board
temperature is more than the
trip limit despite the output
current reduction function.
1. Measure the installation environment
temperature.
2. Make sure that the cooling fans operate
and that air flows out of the rear of the
inverter. A DC voltage of over ~300 V is
required for the fans to run.
3. Make sure that there are no internal
(57635) or external fan failures (57636,
57637).
4. Clean the external and internal fans with a
vacuum cleaner or air blower. Refer to
Maintenance on page 101.
5. Reset the fault.
6. Monitor that the inverter returns to normal
operation.
If the same fault occurs again, power down
the inverter and contact your system supplier.
Your system might:
• Be connected to too many solar panels.
• Be installed in a location that is too hot.
• Have inadequate cooling air flow.
37153 Inverter
overtemperature
The inverter temperature is
more than the trip limit despite
the output current reduction
function.
1. Measure the installation environment
temperature.
2. Make sure that the cooling fans operate
and that air flows out of the rear of the
inverter. A DC voltage over ~300 V is required
for the fans to run.
3. Make sure that there are no internal
(57635) or external fan failures (57636,
57637).
4. Clean the external and internal fans with a
vacuum cleaner or air blower. Refer to
Maintenance on page 101.
5. Reset the fault.
6. Monitor that the inverter returns to normal
operation.
If the same fault occurs again, power down
the inverter and contact your system supplier.
Your system might:
• Be connected to too many solar panels.
• Be installed in a location that is too hot.
• Have inadequate cooling air flow.
Code Fault Cause What to do