Speed not accurate

Hi There, hmmm.... am I hearing that the treadmill starts too fast? At over 1mph? Most US treads will start at 1MPH and some will allow selection of .5MPH in the maintenance mode settings maybe. Otherwise, this could be attacked by a technical crew, like jatinah electronics possibly. If the treadmill would be set at one speed only that could be accomplished by reducing the drive signal at the component-level. It is certainly workable, but I would need to know what the current speed is that is too fast for her, and her ideal speed. ;o)

Questions for analysis:

How old is this machine?
What is the condition of the walking belt and deck?
(most problems with treadmills cutting off during use stem from worn walking belts and decks - replacement is always recommended unless unit is less than 1 year old)

If you are able to walk on the edges of the walking belt (away from the center of the deck), run a test to determine if unit is still shutting off. If not this may be another indication of excess friction in the center (walking) area of the walking belt/deck. The only way to be accurate about this test would be to perform an amperage test, testing the machine unloaded, with load at 3mph, and with load walking on the edges of the walking belt

Precor Error E4, Incomplete Initialization Probable Cause Indicates that an incomplete upper PCA to lower PCA initialization occurred. When this error occurs, all lift motor and drive motor motion is ceased and the display will go blank except for the error displayed.
Corrective Action Run the initialization program. Caution: The treadmill's running belt will accelerate to the treadmill's maximum speed (12mph). DO NOT stand on the treadmill's running belt during the procedure.

1. Set the on/off switch to the OFF position. Wait a minimum of 10 seconds to allow the internal power supply to discharge.
2. Remove the safety key from the console and set the on/off switch to the ON position.
3. Press INCLINE UP and SPEED DOWN keys together. While pressing these keys, replace the safety switch on the console. Continue holding the INCLINE UP and SPEED DOWN keys until the display goes blank. INIT will appear in the time window of the display. The EEPROM is now clear and reset. After a second, 1.25 will appear in the distance/calories window, 15.0 (the maximum incline) will appear in the incline window, and 12.0 (the maximum speed) will flash in the speed/pace window.
4. Press QUICKSTART to begin the speed calibration process. Power bits will appear in the incline window, the target speed will appear in the time window and the actual speed will appear in the speed/pace window. At the beginning of the process, the target speed will be .5mph. The running belt will start. Once the actual speed reaches .5mph, the target speed will then change to 12mph and the running belt will accelerate until it reaches 12mph, then it will stop.
5. When the running belt stops, the display will return to the user mode and the initialization process is complete.

Precor Error Code E4

adjust the speed sensor a) test it b) clean it c) tight the plug or connector very well, see the diagram attached.
2) lube the elevation motor , shaft, and gear. and test it for open or defective motor see the diagram attached.
Again RUN the s. calibration for easy diagnose, troubleshooting, and fix it.
God bless you

Check the rear endcaps for damage. If they are OK, find the allen key that came with the treadmill (you used it to assemble the machine) and go to the back of the machine. If the belt is rubbing, find the left adjustment bolt and turn the screw 1/2 turn clockwise. Now, by hand move the belt a couple revolutions. If it still rubs, repeat the procedure till the belt stops rubbing. Now run the treadmill about 3MPH and fine adjust the belt by turning the screw 1/4 turn until straight.
If the belt is not rubbing, run the machine (3MPH) and adjust the left bolt clockwise 1/8 - 1/4 turn watching closely till the belt is centered.

Your treadmill is working correctly, but it is not reading in miles, but in kilometers... 3MPH=4.8KPH.
Check your owners manual for instructions to change this setting. I believe you need to depress the speed up button while inserting the safety key, but I am a bit rusty with these machines..

Remove the front motor cover. Inside is a copy of the tech sheet. The procedure is outlined there.
These machines do not do an electronic calibration, it is a mechanical one. You must adjust the motor controller for max speed by following the procedure outlined.
If the speed readings are incorrect, you may be set for Kilometers rather than Miles. It's easy to determine. 3MPH=4.8KM...
Follow the procedure in your owners manual to change from metric to miles..

first thing is to get yourself an appliance load tested that can measure amperage draw from a power outlet. plug the tester into the outlet and the treadmill into the tester and verify you are set for amps. at 3mph without being on the treadmill you should see around 2.5 to 3 amps of power draw. If you are seeing much higher than this then the motor may have a dead short which is causing the motor control board to overheat and shutoff - if this is happening within a couple minutes you may be pulling 3 times the amps it is supposed to. to remedy that you would need a new drive motor as the motor is what causes the shutdowns and overheating

Sounds like it needs silicone lube under the belt. Also check the deck under the walking belt to see if the shiny black coating has worn through. If it has the deck will need replaced.
Eric

Precor Error E4, Incomplete Initialization Probable Cause Indicates that an incomplete upper PCA to lower PCA initialization occurred. When this error occurs, all lift motor and drive motor motion is ceased and the display will go blank except for the error displayed.
Corrective Action Run the initialization program. Caution: The treadmill's running belt will accelerate to the treadmill's maximum speed (12mph). DO NOT stand on the treadmill's running belt during the procedure.

1. Set the on/off switch to the OFF position. Wait a minimum of 10 seconds to allow the internal power supply to discharge.
2. Remove the safety key from the console and set the on/off switch to the ON position.
3. Press INCLINE UP and SPEED DOWN keys together. While pressing these keys, replace the safety switch on the console. Continue holding the INCLINE UP and SPEED DOWN keys until the display goes blank. INIT will appear in the time window of the display. The EEPROM is now clear and reset. After a second, 1.25 will appear in the distance/calories window, 15.0 (the maximum incline) will appear in the incline window, and 12.0 (the maximum speed) will flash in the speed/pace window.
4. Press QUICKSTART to begin the speed calibration process. Power bits will appear in the incline window, the target speed will appear in the time window and the actual speed will appear in the speed/pace window. At the beginning of the process, the target speed will be .5mph. The running belt will start. Once the actual speed reaches .5mph, the target speed will then change to 12mph and the running belt will accelerate until it reaches 12mph, then it will stop.
5. When the running belt stops, the display will return to the user mode and the initialization process is complete.

Precor Error Code E4