Troubleshooting Suggestions
Important Considerations
•Drive cooling is extremely important to the overall service life of the product. Extreme care should be used to keep cooling air paths clean. Drive cabinet enclosures have been designed to optimize cooling. Keep cabinet doors closed and panels installed to maintain proper operation.
•Resetting a fault will not correct the cause of the fault condition. Corrective action must be taken prior to resetting a fault. Many drive error codes are reset by cycling power to the drive. The fault may not reappear until drive operation is initiated.
•Drive to motor wiring is critical to proper drive operation. Loose or bad connections can generate heat and increase current output from drive. These problems can manifest themselves in operation by many fault codes indicating overcurrent condition and maximum retries fault.
Problem/Corrective Action
Problem:
Wash basket does not rotate.
Corrective Action
1.Ensure computer control display on washer is showing proper operation.
2.Check power circuit, supply voltage, fuses and disconnects.
3.Verify drive to motor wires are damage free, properly connected and torqued to specifications.
4.Check belt tension and condition.
5.Verify no mechanical problems exist (i.e., binding, motion restriction).
6.Check control input signals. Refer to applicable table of inputs.
PowerFlex 40 and 400 Drive Control Logic
Problem:
Drive started but wash basket is not rotating.
Corrective Action
1.Verify drive to motor wires are
2.Verify no mechanical problems exist (i.e., binding, motion restriction).
3.Check control input signals. Refer to applicable table of inputs.
Problem:
Wash basket not accelerating properly.
Corrective Action
1.Verify drive to motor wires are
2.Verify speed selection control wire connections. Refer to applicable table.
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