Precor Treadmill 9.21si Error Code 26, what does it mean

SOURCE: ???maximum user weight for Precor 9.45i

Normally most home treadmills are 250-300lb user capacity.
Call Precor with your model # and S/N and they can tell you exactly.

SOURCE: the treadmill stop when i increase the speed and t...

Error 26 is what's known as a Motor Pulse Width Incorrect. It basically monitors the sensor signal and verifies that it's appropriate for the requested speed. If your machine uses an infrared sensor, check the line of sight between the optical eye and the sensor target, an array of black and silver wedges arranged like a pie. Ensure that it is 3/16" apart and that it's pointed at the larger point of the wedge section. Use an electronic cleaning compressed air cleaner to blow out any particles that could block it. Have a close look at the target, if it's torn or badly scratched, it will need to be replaced.

If the machine uses a hall effect sensor (magnetic) ensure the distance between the flywheel tooth and sensor is 3/16".

You can sometimes get this error if the speed sensor is faulty, but usually it will happen without you even touching the controls at that point because the lower board isn't receiving any signals from the sensor, or you will get a different error code.

John Mazmanian

• 832 Answers
• Posted on Jun 27, 2010

SOURCE: What is an Error 22, 23,and 26 on a precor 9.35?

Error 22 indicates that the drive motor (running belt) 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.
Error 23 indicates that the speed sensor signal was lost while the treadmill was in operation
Error 26 this error monitors the speed sensor signal and verifies the 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.
Unplug unit and remove motor shroud and try these procedures:
The treadmill utilizes an optical (infrared) speed sensor and the line of sight between the speed sensor and the speed sensor target is obstructed. The speed sensor position relative to the speed sensor target is incorrect. The speed sensor potentiometer adjustment is incorrect (when equipped). The speed sensor target is damaged
Carefully, vacuum out the drive motor compartment with a static safe vacuum cleaner. Pay special attention to the area between the speed sensor and speed sensor target. Adjust the speed sensor position so that the space between the speed sensor and the speed sensor target is 3/16 inch and so that the speed sensor photo eye is aimed at the larger portion of the targets wedge shaped section. On hall effect speed sensors (magnetic sensor) the space between the end of the speed sensor and the flywheel tooth should be 3/16 inch. If the treadmill utilizes a speed sensor potentiometer, locate the speed sensor potentiometer on the lower PCA. Set the speed sensor potentiometer at mid-range. Start the treadmill and increase the speed to 6 mile per hour. Carefully adjust the speed sensor potentiometer to the point where the treadmill is operating the smoothest. Increase the treadmills speed to full speed at repeat the previous adjustment. These two adjustments are typically small and are usually only a matter of fine tuning. . Most speed sensor targets consist of a circular arrangement of alternate black and silver sections. If the speed sensor target is torn or badly scratched the speed sensor may receive an incorrect reading. Replace the speed sensor target.

SOURCE: treadmill precor 655 runs suddenly fast then

speed sensor error
check clean or replace

Testimonial: "easy was it it was good after i tighten the screws of speed sensor"

SOURCE: We are getting an error

we have erorr 22,42,26