Precor Precision 400 Series Service Manual page 108

Error Code
27 Tread error: too much output (to motor) current
28 Tread error: motor controller limit
29 Tread error: too much input (from AC outlet) current
30 Communications error: downstairs to upstairs
31 Incorrect communication Downstairs to Upstairs
32 Communications error: upstairs to downstairs
33 Incorrect communications Upstairs to Downstairs
Contact Precor Customer Support at support@precor.com or 800.786.8404 with
any questions.
Troubleshooting with Error Codes
Description
7 Troubleshooting
Page 101