Maintenance; External Cooling Fan Replacement - Eaton PV240 User Manual

9. Maintenance

9.1 External cooling fan replacement

For PV240 and PV250 models, there is no cooling fan designed for the
external housing, but an internal fan designed within PV inverter for the
thermal management. Therefore, "FAN Lock" is the only failures message
that user will retrieve from the LCD if the operation of internal cooling fan has
failed. If this situation happens, please contact the Eaton service personnel
for further instructions.
For PV260 and PV270 models, there is an external cooling fan and the
internal cooling fan designed within PV inverter for the thermal management.
The external fan is located on the top-front side of PV Inverter as shown in
figure 9.1.2. When the cooling fan is not working properly, user will be able
retrieved three different kinds of failure messages from the LCD. "FAN Lock"
is the first failure message that user can retrieved from the LCD when both
external and internal cooling fan are not working properly. "FAN1 Lock" is
the second kind of failure message the user can be retrieved from the LCD
when the internal cooling fan is not worked properly. "FAN2 Lock" is the last
kind of failure message the user can be retrieved from then LCD when the
external cooling fan is not worked properly.
If there is "FAN2 Lock" on the PV260 and PV270 model, please check if
there is any obstacle which (stopped) blocked the external fan. When no
obstacle can be found, user can follow the below procedures to change the
external cooling fan to see if cooling fan problem can be fixed by changing to
a new cooling fan. If the "FAN Lock" or "FAN1 Lock" happened on the
PV260 and PV270 model, please contact the Eaton service personnel for
further instructions since the internal cooling fan is not working properly.
IMPORTANT
If the error code on the LCD display reads "FAN1 LOCK" with a
PV260/PV270 model or "FAN LOCK" with a PV240/PV250
model, then this means the interior cooling fan located inside the
main housing of PV Inverter is defective and will needs to be
replaced. Please contact system installer or qualified service
personnel to make change the interior cooling fan.
Eaton Corporation Page 59 Ver 1.1