Precor Error Code 51 Resistance Brake Current Low SW

Mar 19, 2022

Applies to SCL800

Issue Symptoms

Software version of Error 56, see 56.

The LPCA software has detected that the Resistance Brake Current is too low. The Resistance Brake is not receiving enough current to properly slow the stairs and will result in the Hold Brake engaging.

Error 51 triggers when the Resistance Brake current is continuously less than 100 milli‑Adc for longer than 410 ms

This error would most likely be caused by a faulty or damaged brake resistance coil, or damaged LPCA circuit or component.

Error 51 can only be detected during a workout while the stairs are moving and recovers as soon as the stairs stop.

Troubleshooting steps

1. Make sure the resistance brake cable is properly connected to the LPCA.
2.  Unplug the eddy current (or resistance) brake assembly cable connection from the LPCA.
   1. Inspect the eddy current (or resistance) brake coil wires for visual wire damage. Replace brake assembly if damaged.
   2. Use the eddy current brake cable connector to measure the resistance through the eddy brake coil. If infinite resistance (open circuit) or zero resistance (short circuit) replace the eddy current brake assembly.
3. Replace the LPCA.