Re: incline stuck- keep going up and dopwn. Treadmill
I had the SAME problem, several times, with my NordicTrack A2250 Treadmill.
Allow it to go fully up and then fully down several times, without turning it off. IT seems to "cycle" that way 3 times and then "reboots" itself and starts working normally, again.
I had to figure this out myself... none of the suggestions I read worked.
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I have the same problem as it continues to go higher without reversing. First note that when it does go back down it will drop with the whole weight of the unit so keep your hands clear. Unplug of course and straddle over the motor housing, grab both outside corner of the belt/table and slightly pull up and wiggle the arm with the teeth and the arm with the motor pivit indpendantly so its just a matter of realigning it and it will drop at the way down, (carefull its heavy and will drop hard so may be a good idea to put a few books of something stuffed under the sides to block it from dropping and possibly smashing your finger). Youll need to recalibrate, on the back of the motor panel is a spec sheet for techs, it has the recalibrate procedure on it. I just went through all this I have a problem with mine now reading the photo switch I think.
This sounds like the treadmill is running an incline calibration. It will run to fully inclined, then to minimum incline. It should not do this every time you want to operate the machine, but they will do it automatically if the operation of the machine is stopped by the power being interrupted..
This happened to my treadmill. You need to get to the motor and see if the belt is fraying. If so, the fibers may have gotten entangled in the motor causing it to stay at the highest incline level. Once you clear this the treadmill will go up and down again. Hope this helps!
Usually when stuck at the max up position it indicates that you may need a new incline motor. It is not the sensor. I have been repairing treadmills for 15 years and incline sensors seldom if ever go bad. If can isolate the incline motor using a 110 volt power cord, this may un-jam the motor and get it back down to 0%. I use www.treadmillpartszone.com for parts.
If the incline moves but only just a bit, it could be a problem as simple as the gearbox on the motor being jammed. We remove the motor from thetreadmill, reconnect the wiring, and then try to run the incline motor outside the treadmill. Many times, this will unjam it if that is the problem and then reinstalling it in the treadmill will get it to work. If you have the same problem or it doesn’t run outside the machine and you can hear it try to work, you need to replace the incline motor.
If the incline is stuck, it could be a problem as simple as the gearbox on the motor being jammed. Unplug the treadmill remove the motor shroud then remove the incline motor from the treadmill, reconnect the wiring, plug in the treadmill and then try to run the incline motor outside the treadmill. Many times, this will unjam it if that is the problem and then reinstalling it in the treadmill will get it to work. If you have the same problem or it doesn’t run outside the machine and you can hear it try to work, you need to replace the incline motor.
If the incline motor does not move, we need to figure out if the motor is getting voltage. Use a simple multi-meter and set it to AC volts. When you put it into calibration, it tries to calibrate the directions one at a time. Measure across the white and black wires first, then measure across the white and red wires second. If the motor is getting voltage you will read 120VAC (or
thereabouts) one one of the measurements. If you have voltage but the motor won't move, you need to replace the motor.
If the incline motor does not move and you have done the voltage test and you do not have any voltage present, there is a problem in the electronics board that supplies the power, you need to replace the board.
Check the motor and the gears that run the unit up and down. If is located on the front of the unit under the face plate. make sure everything is power everything. Also check the gears to make sure they did not break and check the tracks to make sure it did not fall off the track causing it to stay up