Speed sensor error appears in the screen at start up and the belt doesn't move

Error code E2 on a treadmill typically indicates a problem with the speed sensor. The speed sensor is a small device that measures the speed of the treadmill belt and sends a signal to the treadmill's control panel. If the sensor is not functioning properly, it can cause the treadmill to display an E2 error and prevent the belt from moving.
There are a few potential causes of an E2 error on a treadmill:

1. The speed sensor may be loose or misaligned. Make sure that the sensor is securely attached to the treadmill frame and properly aligned with the magnet on the flywheel.
2. The speed sensor wire may be damaged. Check the wire for any visible damage, such as fraying or cuts.
3. The control panel may be malfunctioning. If the error persists even after checking the sensor and wire, the control panel itself may be the issue. In this case, it may be necessary to have the treadmill serviced by a professional.

I hope this information is helpful. If you continue to experience problems with your treadmill, it is recommended to have it serviced by a professional to ensure that it is functioning safely and correctly.

Ask the manufacturer

ERR1 Definition: The display board CPU didn't receive the optic sensor signal. • Explanation: After processing by the drive board, the optic sensor signal travels the 16-pin cable to the display board CPU, which determines motor speed. Components involved include the optic sensor, optic sensor wheel, 16-pin cable, drive board, display board, and connections. http://www.sportsmith.net/images/product_support/sportsart/Repair%20Manuals/General%20Treadmill%20Svc%20Manual.pdf

Have to check the speed sensor. Either the speed sensor is faulty or the can be dust or speed sensor alignment.
If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/

Precor Error Code 22 Error Code: 22 Manufacturer: Precor
Model: All Models
Error Description: Error 22, No Motor Pulses at Start Up - Error indicates that the display has sent a command for the drive motor to start, however, the speed sensor has not returned the signal acknowledging that the drive motor has started. Possible Reason:

1. The line of sight between the speed sensor and the speed sensor target is obstructed.
2. Badly worn drive motor brushes.
3. Incorrect gap between the speed sensor and the speed sensor target.
4. Incorrect adjustment of the speed sensor potentiometer (when equipped).
5. Inoperative speed sensor.
6. Faulty lower PCA.
7. Faulty interconnect cable between upper and lower PCA.
8. Faulty upper PCA.

Recommended Action:

1. Using a static safe vacuum cleaner, carefully vacuum out the drive motor compartment. Be sure to thoroughly clean the area between the speed sensor and the speed sensor target.
2. Bady worn drive motor brushes cannot make proper contact with the motor commutator, therefore the drive motor will not start when voltage is applied. Inspect and replace drive motor brushes if necessary.
3. Inspect the gap of the speed sensor to the speed sensor target. Proper gap is 3/16" and the speed sensor photo eye should be aimed at the larger portion of the targets wedge shaped section. If unit has a magnetic speed sensor, the gap between the end of the sensor and the flywheel tooth needs to be 3/16".
4. Locate the speed sensor potentiometer (when equipped) on the lower PCA. Set the speed sensor potentiometer to mid-range. Start the treadmill and increase speed to 6 mph. Carefully adjust the speed sensor potentiometer until the treadmill is operating the smoothest. Increase the speed to full speed and again adjust the speed sensor potentiometer until the treadmill is operating the smoothest. These two adjustments are typically small and are generally only a matter of fine tuning.
5. An inoperative speed sensor will allow the drive motor to start and run briefly before the error appears. If able to access the speed sensor wiring, measure the DC voltage between the speed sensor leads. Two of the leads will always read about 5 VDC. Two will toggle between 0 and 5 VDC as you slowly turn the speed sensor target. If both measurements are not seen, the speed sensor needs replaced. Some units have the speed sensor mounted on the lower PCA and the lower PCA needs replaced.
6. Determine if the lower PCA is bad by swapping with a known good lower PCA.
7. Determine if the interconnect cable is bad by swapping with a know good cable.
8. Determine if the upper PCA is bad by swapping with a know good upper PCA.

Precor Error Code 22

Dear Sir:
This is probably a 1) faulty speed sensor or 2)the speed sensor is not plugged in properly. Its also possibly a 3) faulty motor control board or lower board 4) Main motor faulty. . The error codes will differ between makes and models but could be e1.You must test

see my personal TIPS for diagnose and troubleshooting.

See if you can run the software calibration for diagnose and trouble.

sincerely. God bless you.

ernesto cuadra
managua, nicaragua. c.a.

1)probably a faulty speed sensor
2) speed sensor is not plugged in properly.
3)possibly a faulty motor
4) Main control board or lower board.
The error codes will differ between makes and models but could be e1.
Check this video for speed sensor.
http://www.youtube.com/watch?v=23ZgWaVEQjA

adjust the speed sensor:Move the motor to slacken the pulley, then lift the motor to get underneath. That is where the treadmills speed sensor will be located. It is usually a square or rectangular shaped green module with connectors at both ends.

Finally after you did the adjustment you can conclude:
A) Faulty Speed sensor B) Main Motor faulty C) Main Motor Controller faulty.

attached block diagram for treadmill that I did for any treadmills,see how the Main Motor Board has function for 90% of the treadmills.
sincerely.
E.CUADRA
MANAGUA, NICARAGUA. C.A

first screen shows any error number? for what you describe I think it is simply speed sensor, try to check the cables leading to the sensor card. and then checks whether the sensor is aligned correctly.
Check speed sensor alignment.
It should be within 1/16" of the flywheel
and parallel to the flywheel.
Is it out of position?

error 1 simply means no belt movement generally. If belt moves a little it could be the speed sensor but generally it's the motor controller.

tHIS MAY BE A SPEED LOSS ERROR. Is the belt moving when this happens? Decribe what lead to this problem in the first place that will help me to better assist you.

I’m happy to help further over the phone at https://www.6ya.com/expert/howard_079189dd4959a511