NordicTrack A2350 goes super hi speed when starting up. I tried calibration from screen and the speed went up to 145. What is the issue and can it be fixed by user?

Hope the speed sensor have some problem may dust on it or the treadmill need lubrication. Most of the treadmill stop after some kilometres reading indicating that its time to lubricate it. After lubrication you have to reset the counter.
check the link bellow using the search tab find out details of NORDICTRACK A2350. and follow those instruction.

www.electro-medical.blogspot.com

this happen to due the lack of maintenance according the schedule manintenance. see the video and proceed.However if after you did, the problem remain,is TIME to replace the old board deck. God bless you

plealse LUBE the deck belt + rollers bearing too . you must do it after 150 miles aprox.
2) adjust the REED switch see the diagram, clean it, test for open or faulty. Tight the connector very well.
God bless you

see the video and proceed according.
God bless you

1= Not rexactly, however you must LUBE the deck belt, this a problem because of lack of maintenance, probably a deck worn, this cause enough friction shut down the machine for protection electronic.
2)LUBE the rollers bearing.3)test the input voltage motor, if there are the motor need repair.4) measure the output voltage board, if there are NOT voltage, the board is faulty, see my personal TIPS, and see the block diagram. RUN the software calibration for diagnose, and troubleshooting.
God bless you

I have a NordicTrack C2155. Incline not working. There is a schematic inside. There are red, white, & black wires from the circuit board to the incline motor. Unplug the treadmill and have a licensed electrician construct a flying lead cord with a male spade on neutral and female spade plug on hot. Connect neutral to white and hot to where either red or black were connected. Plug in to see if the motor runs. Careful to remove power when the incline reaches its limit and reverse direction. If the motor runs in both directions, the motor is good. Follow the black two conductor wire to the circuit board and unplug from board. Check continuity across this switch. Run motor and this should toggle off and on. If all this checks out then the problem must be with the circuit board. On my treadmill, the schematic says that +5v should supply the sensor, but I only get +3.3v, which is TTL level. The drive motor sensor supply is +5v. The incline motor doesn't even show a sign of trying to run. Either the output transistor is burnt out or the low voltage caused an error so that it does not try to run the motor. Either way, I'm quite certain that a new controller board will remedy the problem.

in the front of the treadmill orange switch

Follow the instructions found in your manual for incline calibration first. With the safety key/magnet in, press incline up, remove the key while the numbers are changing, release the incline button then reinstall the safety key. The incline should calibrate.
If the motor moves, then stops b4 completing it's cycle, the incline sensor may be defective. The sensor is the black cap/wire coming out of the top of the motor. Make sure it is connected properly.
If the sensor is defective, you have to order the complete motor to repair the problem The sensor can be replaced without replacing the motor, but it is not available as a replacement part..
Part #249516 around $110....

This is just the store display mode it comes with - check the manual, it should tell you how to easily turn off the store display mode.