My proform 750 CS will power up and incline but the motor won't start moving. While performing troubleshooting on the MC-60 SCR Motor Controller the D11 LED is the only LED lit up on that circuit

If you've already replaced the lift motor on your Proform 400s Treadmill and the incline still won't work properly, there may be other underlying issues that need to be addressed. Here are a few troubleshooting steps you can try:
Check the wiring: Ensure that all the wiring connections related to the incline mechanism are secure and properly connected. Loose or damaged wiring can cause issues with the incline functionality.
Inspect the incline motor and gears: Examine the incline motor and gears for any signs of damage, misalignment, or obstruction. Ensure that the gears are engaging properly and that there are no obstructions preventing the incline from moving up and down smoothly.
Reset the treadmill: Perform a full system reset on your treadmill. This can often resolve minor software glitches or issues that may be affecting the incline function. Consult your treadmill's user manual for instructions on how to perform a reset.
Contact customer support: If you have followed the above steps and the issue persists, it is recommended to reach out to the customer support of Proform or the retailer from whom you purchased the treadmill. They should be able to provide further troubleshooting guidance or arrange for professional repair assistance if needed.
Remember to exercise caution when working with electrical components or performing any repairs on your treadmill. If you are unsure or uncomfortable with the process, it is advisable to seek assistance from a qualified technician or the manufacturer's customer support to ensure proper diagnosis and resolution of the issue.

Hi sir
1) Please open the covert where the main motor is, disconnect
the connector from the Incline motor.
2) Turn On the treadmill, and see what happen.
3) If the problem does Not appear , is indication the controller motor board is defective.
Since the controller motor board has 3 power supply: 1) Console 2) Main Motor 3) Incline Motor.


LED Blink Patterns on the Control Board Treadmill
Blessing
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celular+WhatsApp:+50588611441

Precor Error 44, Un-commanded Lift Motion Probable Cause 1. Intermittent or bad connection in the lift position sensor(potentiometer).
2. Lift position sensor (potentiometer) is bad.
3. Lower PCA is bad.
Corrective Action

1. Bad or intermittent connection of the lift position sensor (potentiometer) is the most common cause of the error 44. Inspect all wiring and connections related to the lift position sensor (potentiometer). Repair or replace wiring connections as necessary.
2. Monitor the lift position number displayed while operating the lift in diagnostics mode. If the reading makes large changes or is erratic, the lift position sensor (potentiometer) is likely bad. Replace the lift position sensor (potentiometer) or lift motor if the lift position sensor (potentiometer) is internal to the lift motor.
3. If the lift moves without any command entered either manually or through a program, replace the lower PCA.

Precor Error Code 44

RUN the software calibration for diagnose, troubleshooitng, fix it.
2) Lube the gear+shaft from elevation Motor
3) adjust the POT from elevation motor, see diagrams attached.
God bless you

1) i recommend that you lube very well deck belt + rollers bearing

2) see the videos.

3) see the block

4) Try to RUN the software calibration, for troubleshooting.

5) measure the input voltage motor, if there are the motor need repair.
6) Measure the output voltage board, for input voltage board, if there are NOT, the board is faulty.

Dear Sir:

Inside test the fuse and replace use DVOM, or reset the c.breaker

2) Adjust the reed switch see the diagram attached, clean,and tight the connector very well. Tigh the ribbon cable from keypad + connector from display board vs lower board

3) Lube the deck vs deck belt, this produce enough friction.

4) test the input motor voltage,if there are the motor need repair or replace

5) Test the output voltage from the m.motor board for the input motor voltage, if there are NOT the board is faulty.

6) Try after your fix, the software calibration for diagnose, and troubleshooting.

sincerely. God bless you

Take the cover off and inspect the wiring. Make sure all the wires from the incline motor are connected.
If all the wires are connected and everything looks OK, try the incline again.
There are only 3 wires on the incline motor, red, white and black. This machine does not rely on any electronics to operate the incline. We know the motor works, because it will go up..Likely the switch in the console is defective.
To lower the incline, reverse the black and red wires, that will make up go down and vice versa.. If that doesn't work, the motor is likely defective.
The incline motor is available, around $110. To order find the model number on the frame of the treadmill and call the service number found there. Have your model number ready (starts with "P").
The console is no longer available.

just change the Diodes D4015L and SCR´s S4015L whit a caugting buy the new change and ready or is a MC-2100 w / transformer just change the MOSFET IRF250N

ICON CALIBRATION INSTRUCTIONS- INCLINE
1) Press the Stop and the Speed Up keys down while inserting the safety key.
2) Press the Stop key one time. The Time window should read EP:2P. Some newer models may also say FP, Pass, or the like. This means that it passes the EPROM test.
3) Press either incline key and the incline will calibrate automatically.
4) THIS IS A VERY IMPORTANT STEP BECAUSE YOU WILL GET AN ERROR MESSAGE IF THIS STEP IS SKIPPED.After completing calibration of incline, press the Stop key and then remove the safety key.



If the incline moves but you it will not operate normally nor calibrate, check the wiring from the incline sensor to the power board. If all looks normal, put it back in calibration and see if you see a blinking “- -” symbol in the incline window when you are calibrating. If not, the incline sensor is bad.

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 the treadmill, 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 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.
4.
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. If the console is powering the drive motor as normal, you can bet it is getting an incline signal and the power board needs to be replaced (some models have an integrated power board/controller) so if there is only a single board the whole board has to be replaced. It is possible the console is not giving the proper signal but we've never seen it happen in thousands of treadmills.

Hi there,

Well I find a controller on ebay.com
You can purchase it from below link -

http://cgi.ebay.com/Repair-Rebuild-MC-60-Treadmill-Motor-Controller-MC60_W0QQitemZ140347773158QQcmdZViewItemQQptZExercise_Fitness_Cardio?hash=item20ad6110e6


Just copy and past the above link to your web browser and follow the site instructions to purchase it....

Good Luck!!

THanks