This error monitored the rotating speed of an external cooling fan attached to the drive motor on
9.55, C954 version 1 and C956 version 1 treadmills. The system used an optical speed sensor
that read an infrared signal reflected back to the speed sensor from a target attached to the hub
of the cooling fan.
1. It was determined that the fan speed sensing system was unreliable and false error 13
indications were being displayed. The lower software was changed to remove all error 13
2. If the installed software includes an error 13, the fan may be clogged with dust and/or dirt.
1. Replace the lower PCA software with the most current lower PCA software available.
2. Clean the fan. If the error 13 still occurs, replace the lower PCA software with the mostcurrent lower PCA software available.