Question about Proform Exercise & Fitness
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Posted on Jan 02, 2017
SOURCE: TX 4.9 sportcraft treadmill
Info from PDF files located on Sportcrafts website under manuals.
E3 – No speed sensor reading. Unit shuts down. This is the most difficult repair diagnose. The speed
sensor is connected to the frame of the treadmill near the drive pulley on the front roller. There is a
small magnet on the side of the pulley wheel. The sensor tip must be no more than 5mm from the
magnet. If for any reason the distance is greater than 5mm the treadmill will shutdown
Adjust or replace speed sensor.
Treadmill: Speed Sensor Replacement
1. Make sure your treadmill is unplugged before you begin.
2. Remove the motor cover located in the front of your treadmill, it is held on by a few screws.
3. Locate your speed sensor; it is the small T shaped part with a red and black wire coming from it.
4. Remove the 2 screws in the speed sensor and remove the old sensor.
5. Place the adjustment holder on the frame with the open holes facing the pulley wheel, the prongs facing
up and way from the pulley wheel. Insert the screws but don’t tighten fully.
6. Now place the speed sensor over the prongs with the square part facing the pulley wheel and the red and
black wire to the far right.
7. Plug the treadmill back in and slide the speed sensor until it is 5mm from the magnet inside the pulley
wheel, you may have to do this several times until you can position it so it no longer shuts down. Use 2
nickels to figure out the spacing. The width of 2 nickels is 5mm.
8. Once you find the correct position tighten the screws all the way; being careful not to touch any of the other electronics
9. Place the motor cover back on and enjoy your machine.
Posted on Oct 17, 2009
Sorry I dont have the solution but I have the same problem.
Read somewhere that Sportcraft control boards had
a design flaw.
Posted on Dec 20, 2009
Can you give more details? are you saying it stops 7 seconds after you step on it, (every time)?
If so, have you had the treadmill a while? this is an indicator of a worn belt. the belt is not sliding like it should, and drawing too much current. your control board will 'clip' the current off after a pre-set time, to avoid burning up components.
other things it could be:
1. your belt is too tight. did you tighten it lately? When did your treadmill start doing this?
2. The motor is going bad, and drawing too much current.
3. motor control board is bad.
look at your motor's current rating: measure the current draw when you get on it. if the current draw is ~ 80% of the rated current of the motor, and your belt is good,..and not too tight, it could be the motor.
if the treadmill is stopping while only drawing 4 or 5 amps, I would lean towards the control board is bad.
cheapest way to get started troubleshooting. Ensure the belt is not too tight, (adjust to only about 3 inches slack, when you pull up on it). next. buy some belt lubricant and lube it up.
If this doesn't fix your problem, keep looking for other fixya help. someone with SportCraft TX 2.5 specific experience. Sorry, I only have generic help here.
Posted on Jan 27, 2010
SOURCE: Treadmill stops after 7 seconds
you have a broken spinner. Take hte motor cover off and look on the opposite side of the motor. there will be a partof the spinner wheel there. I have yet to find a way to short cirut the connectors nor a replacement wheel.
Posted on Jan 08, 2011
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