Carrier 48/50PD05 - Manual (Page 86)

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History
For reference, the last three fault codes are stored into parameters
0401, 0412, 0413. For the most recent fault (identified by
parameter 0401), the drive stores additional data (in parameters
0402 through 0411) to aid in troubleshooting a problem. For
example, a parameter 0404 stores the motor speed at the time of the
fault. To clear the fault history (all of Group 04, Fault History
parameters), follow these steps:
1. In the control panel, Parameters mode, select parameter
0401.
2. Press EDIT.
3. Press the UP and DOWN buttons simultaneously.
4. Press SAVE.
Correcting Alarms
To correct alarms, first determine if the Alarm requires any
corrective action (action is not always required). Use Table 42 to
find and address the root cause of the problem.
If diagnostics troubleshooting has determined that the drive is
defective during the warranty period, contact ABB Automation
Inc., at 1--800--435--7365, option 4, option 3. A qualified
technician will review the problem with the caller and make a
determination regarding how to proceed. This may involve
dispatching a designated service station (DSS) representative from
an authorized station, dispatching a replacement unit, or advising
return for repair.
VFD Maintenance
If installed in an appropriate environment, the VFD requires very
little maintenance.
Table 43 lists the routine maintenance intervals recommended by
Carrier.
Heat Sink
The heat sink fins accumulate dust from the cooling air. Since a
dusty sink is less efficient at cooling the drive, overtemperature
faults become more likely. In a normal environment check the heat
sink annually, in a dusty environment check more often.
Check the heat sink as follows (when necessary):
1. Remove power from drive.
2. Remove the cooling fan.
3. Blow clean compressed air (not humid) from bottom to top
and simultaneously use a vacuum cleaner at the air outlet to
trap the dust. If there a risk of the dust entering adjoining
equipment, perform the cleaning in another room.
4. Replace the cooling fan.
5. Restore power.
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