I get an E4 error message with my T9500 HRT Treadmill. What is the message indicate and how do I fix it. Powering on and off makes it go away.

Data Cable issue.

Large Data Cable Symptoms 1. E2 (T9200 & T9250 ONLY) 2. E5 3. E6 4. E9 5. No Elevation or speed function 6. No Elevation 7. No Speed 8. Deck goes to max at start 9. Run away speed Small Data Cable symptoms 1. No power to the upper board 2. Loss of power to the upper board, intermittent shutdown To troubleshoot a bad large data cable for most models - Enter engineering mode (see engineering mode for specific treadmill). If the elevation window in calibrations reads 000 in Px there no signal from the lower board to the upper console.
https://content.johnsonfit.com/inc/uploaded_media/4827226804f82ae5476352ddf9051547/troubleshooting_guide/87fc08ffe3e0caa8a9d3a1b15d59e71d.pdf

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Sometime talcum powder under the thread will get it working again, but you may eventually need a new tread. Less likely, a problem with the motor especially if it's underpowered.

It appears that your elevation system is where the fault lies. This could be as simple as recalibrating the lift mechanism, or possibly correcting faulty wiring from the lower controller to the lift motor. Be sure to check the condition of the lift motor as well as the wires entering the lift motor. Sometimes the wires will pull away from the plastic connector causing a lift motor error

Try Retrevo Manuals.com lots of manuals but you really have to search for them. Make sure you gave make, model number etc.

see this steps and fix it. .Of course you must read your instr. manual or download from www. iconservice.com
When the treadmill is not in use, press the "Stop," "ENTER" and "QUICK START" buttons in rapid succession. The "RESET" button can also be used, in place of the "Stop" button.

2 Press the "ENTER" button three times to access the treadmill's error log.

3 Press the up or down arrows to scroll through the error codes, if necessary for club or personal logging purposes.

4 To view the treadmill's odometer reading when a particular error code was elicited, press "SELECT" while a particular error code is displayed.

5 To clear the error log, press "QUICKSTART" for a minimum of four seconds while viewing the list. Prompts will appear on the display and let you know when the log has been deleted.

Dear Sir:

Adjust the reed swtich see the diagram attached, clean, and tight the connector very well.

tight the ribbon cable from keypad, and connector for display board vs lower board.
If the problem persist you must run the software calibration for diagnose and troubleshooting.

sincerely. God bless you

Typically an E6 error message indicates that the machine needs to be recalibrated because the elevation motor is out of range or that you have a loose cable connection. Below are the auto calibration instructions. Please make sure that no one is on the machine because it will speed up quickly.

STEP 1 ENTER ENGINEERING MODE

With the safety key in place, hold "ELEVATION UP" and "SPEED

DOWN" buttons for 5 seconds. Software version will appear in display

window for a few seconds before model displays.

Press "STOP" , "ENG1" will appear in display window.

STEP 2 AUTO-CALIBRATE

Press "ELEVATION UP" until "ENG4" is displayed.

Press "SELECT" , display will read "AUTO".

Press "START". Unit will calibrate, when finished "END" appears in

display window, then "ENG1".

STEP 3 EXIT ENGINEERING
Press and hold "STOP" to exit engineering mode

I would also suggest that, with the power to the machine off, you check all of the wire connections underneath the motor cover, the assembly connection that sits where the mast meets the console and underneath the faceplate. Check to be sure that all of the connections are secure and that the pins within the cables are seated properly.

If you are still having any problems you can reach a knowledgeable Vision Fitness Representative toll free at 800-335-4348.

Hi,
Thanks for using Fixya.
C4 error indicates Elevation error (signal lost).
To remove it, check condition of all cables and cable connections and recalibrate

I believe E4 on ths 730si means that the speed of the motor the sensor is detecting is greater than the set speed. E2 would be the opposite. I believe there is a way to calibrate the speed. Look at the smaller motor controller board.