Get The Best Answer: How To Bypass Speed Sensor Treadmill

Treadmill training is a great solution to an indoor workout regimen. However, using the device for a long time will inevitably lead to problems with the machine’s operating parts, and typically the velocity sensor. When your trainer has a problem with this part, the erratic change in running speed will make you feel uncomfortable.

So, how to bypass speed sensor treadmill? Instead of calling the repair department, do it yourself! If you still have no idea about this problem, read our article to get all the needed information!

Why Is Your Treadmill Speeding Up On Its Own?

Wondering how to determine what’s causing your running machine speed to be inconsistent? Then, try the following steps to check where your trainer is having trouble!

You must first read the manual to find the recommended velocity of the treadmill. After that, set this figure for the device, start it and watch closely from the side. In the event of damaged or jammed belts, you will need a suitable replacement for them.

Another cause of your trainer’s auto-acceleration is improper grounding. According to the user manual, users must use a 20 amp outlet and connect it directly to the running machine through the plug.

Treadmill velocity changes erratically

Treadmill velocity changes erratically.

If you are using an extension cord, surge arrester, or stabilizer, it will adversely affect the trainer’s tachometer. Once the voltage is not supplied enough, the velocity of the device will also have problems.

Besides, you need to pay attention to the PCB connector and the treadmill’s motor as they can be loose. We recommend you regularly check the lubricant on the belt and timely add more lubricant. The belt and engine of the running machine also require frequent checking.


How To Bypass Speed Sensor Treadmill?

The speed sensor is responsible for displaying the velocity that the front roller is reaching. Once the tachometer fails, your running machine workout routine is broken.

Depending on the brand and model, each device has a unique velocity sensor. The problem is that some types of tachometers have been discontinued, so you cannot use the alternative method with a new one. So, what is the best way to fix this problem?

Don’t let this problem give you a headache! Roll up your sleeves and start the fixing process now!

List Of Tools

  • Allen wrench
  • Socket and ratchet
  • Voltage meter
  • Screwdriver

Six Steps On Bypassing The Speed Sensor

Step 1

The first step is to make sure the treadmill’s power cord is unplugged from the electrical outlet. Use an Allen wrench on the engine cover in front of your trainer and remove all fixing bolts.

Plugging the machine can cause danger

Plugging the machine can cause danger.

Step 2

After opening the engine cover, you will see the circuit board wires (in black and white). Pull them away from the circuit board terminals. Then, use an Allen wrench or ratchet to loosen and remove the bolts.

Step 3

For engines facing the front roller pulley, raise the last motor slightly. Once the drive belt is loose, remove it from the engine pulley.

Working with the right bolts on the device pulley

Working with the right bolts on the device pulley

You need to put the motor vertically and check the screws on the sensor. If looseness is detected, a screwdriver will be useful to fix the problem.

Step 4

What you need to do now is pull the connector off the breadboard. Then use a voltage meter to check if the measuring device wiring is working properly. In case of problems, you need to replace the device immediately.

Step 5

On the underside of the motor, carefully insert the tachometer into the bracket. Then, connect the leads to the circuit board and put the drive belt back on the pulley. Reinstall the engine as before by tightening the bolts.

Step 6

Reconnect the black and white wires between the motor terminals and the circuit board, then reattach the motor cover. Once everything is done, plug the plug into a 20 amp outlet. Following that, restart the machine according to the instructions in the manual.

Tips And Warnings

Keep an eye out for warning lights on your running machine, as they will notify you if your machine is having problems. By observing this notification, you will promptly find out the cause and promptly find a remedy.

At the same time, keeping the tachometer area clean will help the machine to ensure long-term operation. When inspecting or replacing the internal parts of the trainer, you need to make sure the device is completely disconnected.

How to Fix The Inaccurate Speed Sensor on the Treadmill?

The tachometer converts the belt’s revolutions per minute into miles (or kilometers) per hour. The tachometer will fail in some cases if it has some minor internal problems, such as a loose screw. At such times, an error code will be displayed on the screen.

So, what to do in case you want to check the internals of it quickly? Instead of contacting a technician, you can also do it yourself by following these very simple steps:

  • Be sure to disconnect the power from the device by unplugging it from the electrical outlet.
  • Remove the motor cover, then follow the white and black wires to the bottom circuit board.
  • Remove the leads from the circuit board.
  • Loosen the bolts securing the motor. Then, lift the belt slightly on the front pulley pendulum to create some slack and remove the bolts. Once everything is in place, place the motor upright to access the tachometer and bottom bracket.
  • Check the attachment of them. If there is looseness, use an Allen wrench to re-tighten the screws.

Allen wrench- an ideal tool to tighten the screws

Allen wrench- an ideal tool to tighten the screws

  • Use a voltage meter to check the continuity of the circuit board below. In case the meter shows continuously, you need to replace the treadmill tachometer.
  • After replacing, reassemble the machine by doing the above process in reverse. Refer to the recommended information in the user manual to install and restart your trainer.

What Are The Problems With Speed On A Treadmill?

Certain parts of a running machine can also lead to erratic changes in its velocity. If you’re wondering about them, scroll down to see what they are.

Belt And Deck Problem

To find out if there is a problem with the belt and deck, you should follow the following test procedure:

  • Disconnect the power on the walking belt holder,
  • Push the belt in the direction that it would normally rotate
  • When you find it very difficult to turn the belt, there is high belt/deck friction. It can damage the DC board if you let it go on for a long time.

To see if your belt has automatic velocity changes, try a little test below:

  • Set the speed to 2.5 mph, then watch the treadmill run without the belt. At the same time, check to see if there is any change in velocity.
  • If the results show no change in speed, try stepping on the belt. If you feel the velocity is changed, the DC board has a problem with the output.

Treadmill belt

Treadmill belt.

A Short In The Motor

Using a simple multimeter will be ideal for determining if your device is experiencing circuit board problems. There must always be an open circuit between the DC motor lead and the common earth ground in the circuit board.

Another case is that the tachometer signal of the machine has a problem. Once the signal generator fails, the feedback from the feedback links will erratically change your machine’s running speed.

Signal Generator

The transmitter will also change the running velocity of your trainer if it has any problems, even if no one is on the machine. In some cases, you may receive a speed error code message from the device’s display.

Display screen.

Display screen.

Our Final Thoughts

Checking and fixing problems related to the tachometer will no longer be an obsession if you are know-how. We hope you will no longer have to worry about how to bypass speed sensor treadmill anymore through this article. Now, what are you waiting for? Roll up your sleeves and start bypassing your device now!

5/5 - (1 vote)

Leave a Comment