Drive Motor System Troubleshooting
About
This procedure applies to 3-phase drive motor systems. Occasionally, there may be issues or
failures of the drive system that do not generate error codes. This procedure provides addi-
tional information to troubleshoot and repair these types of issues.
If there is a Drive Motor system error code from 20 through 29 in the error log, go to the Error
Code Troubleshooting Guide, see the Error Code Troubleshooting Guide, for Troubleshooting
and repair information.
If there are no errors in the error log and there are Drive Motor system related issues (such as
failure to start or jittery motion) then continue with troubleshooting procedure.
Related Error Codes
Drive system error codes: 20 through 29, refer to the Error Code Troubleshooting Guide.
RELATED
ERROR CODE DESCRIPTION
20 Motor Will Not Start / No Motor Movement Detected
21 too Many Maximum Consecutive Power Requests
22 Error 22 indicates that the drive motor has been instructed to start, by
either manual or program control, and the monitoring system has not
received any response from the speed sensing system indicating that the
drive motor has started.
23 Error 23 indicates that the speed sensor signal was lost while the tread-
mill was in operation.
25 Motor Controller / LPCA
1
Hardware Error
26 Error 26 monitors the speed sensor signal and verifies the speed sensor
signal is appropriate for the requested speed. If the speed sensor signal
is incorrect or erratic an Error 26 will be displayed.
27 motor current too high)
28 Electronics Temperature Too High
29 Excessive AC
2
Input Current
1
Lower printed circuit assembly; generally this refers to the lower board. On treadmills, this is
the motor controller unit (MCU), and on self-powered units, it is the main board in the lower
section.
2
Alternating Current: electric current which periodically reverses direction between positive
and negative polarity.
Contact Precor Customer Support at support@precor.com or 800.786.8404 with
any questions.
Page 201
7 Troubleshooting
System Troubleshooting Procedures
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