My Z16 york treadmill has fault L5 How can i check the speed sensor or speed controller as i have had the motor checked as ok

Replacement Parts for Fitness Exercise Equipment at SPORTSMITH


It is common to see this error as and L5 error, but it is actually an LS error. The following information will define this error and give you the possible solutions to fix this issue.

LS Error with No Belt Movement on Landice Series Treadmills

LS Error on Landice L-Series Treadmills with No Belt Movement Probable Cause A LS error on the Landice L-Series treadmills can also look like L5 and this error code means there is a loss of speed signal. If this error occurs with no belt movement, the causes for the LS or L5 error are:A) Faulty upper display board or faulty relay board
B) Improper speed control wiring
C) Improper motor control wiring
D) Worn or faulty motor brushes
E) Faulty pwm/relay combo board or faulty drive motor
Corrective Action A) Enter Open Loop Speed mode and set treadmill speed to confirm proper line voltage to pwm board and that the green BELTSW light is lit on the relay board. Replace upper display board or relay board if necessary.
B) Inspect speed control wiring and correct wiring if necessary:

1. Checking purple wire from V+ on pwm board to P3 on the relay board
2. Checking orange wire from P1 on pwm board to P1 on the relay board
3. Checking brown wire from P2 on pwm board to P2 on the relay board
4. Confirm P3 on pmw board has no connection

C) Inspect motor control wiring, checking wires from motor to A+ and A-. Correct wiring if necessary.
D) Inspect motor brushes verifying brushes slide freely, are at least 3/8" long, are curved and have no burns or cracks. Also check the brush springs and verify that the brush copper wire is not burned or broken. Replace both motor brushes if necessary.
E) Inspect motor turns and is not seized up or has a broken shaft. Replace motor if necessary. Also verify at least 90VDC present from the black (A+) wire and white (A-) wire from the pwm board to the drive motor. If voltage is present, replace pwm/relay combo board. If no voltage present, replace drive motor.
Details about LS Error on Landice Series Treadmills with Belt Movement
LS Error on Landice L-Series Treadmills with Belt Movement Probable Cause A LS error on the Landice L-Series treadmills can also look like L5 and this error code means there is a loss of speed signal. This error can occur with belt movement but speed will not increase. Causes for the LS or L5 error with belt movement are:A) Speed sensor is out of adjustment
B) Speed sensor is damaged or faulty
C) Display cable is damaged or faulty
D) Improper speed control wiring Corrective Action A) Speed sensor should sit parallel with the flywheel and gap between speed sensor and flywheel should be within 1/16". Adjust speed sensor if necessary.
B) Inspect speed sensor connector to relay board. Check for pushed pins or loose wires. Repair or replace speed sensor assembly if necessary.
C) Inspect upper harness or display cable connector to relay board. Check for pushed pins or loose wires, giving specific attention to pin 5 (brown) and pin 9 (green). Repair or replace display cable if necessary.
D) Inspect speed control wiring:

1. Checking purple wire from V+ on pwm board to P3 on the relay board
2. Checking orange wire from P1 on pwm board to P1 on the relay board
3. Checking brown wire from P2 on pwm board to P2 on the relay board
4. Confirm P3 on pmw board has no connection

Correct speed control wiring if necessary.

Probable Cause A LS error on the Landice L-Series treadmills can also look like L5 and this error code means there is a loss of speed signal. If this error occurs with no belt movement, the causes for the LS or L5 error are:

A) Faulty upper display board or faulty relay board
B) Improper speed control wiring
C) Improper motor control wiring
D) Worn or faulty motor brushes
E) Faulty pwm/relay combo board or faulty drive motor


This error can also occur with belt movement but speed will not increase. Causes for the LS or L5 error with belt movement are:

A) Speed sensor is out of adjustment
B) Speed sensor is damaged or faulty
C) Display cable is damaged or faulty
D) Improper speed control wiring

If you find yourself needing any further assistance please do not hesitate to call our technical support team at 888-713-2880 or check out our technical support center at http://www.sportsmith.net/supportsearch.aspx we would be more than happy to help!

follow this steps and fix it. God bless you
AFETY SHUTDOWN Loss of Speed Signal" or "L5" WITH belt movement
This is usually an indication of a speed control malfunction. The upper board is not recognizing a signal pickup from the speed sensor. This could be due to the speed sensor being misaligned, improper connection, or bad speed sensor. Refer to the flowchart on page
"SAFETY SHUTDOWN Loss of Speed Signal" or "L5" WITH NO belt movement
The speed sensor is not recognizing any motor movement. This displays the error message to the upper board.

Test the input voltage 2)test the relais 3)see sensor speed wiring 4) test terminal motor.

God bless you

i noticed that the speed sensor is rarely faulty,, a fuze wouldnt let you do anything...
i usualy take the brushes out of the motor and clean the speed sensor and surroundings of dust and bits of steel dust, makes them go fine,, i fix treadmills for a job and everybody always told me its a elec board problem but this always works for me.. clean and rebend the brushes blow the speed sensor with aircompressor. sometimes i have to reposition the speed sensor and i glue it into place when i found the swt spot.

hi,
Error E3 means speed sensor error.there is a sensor for checking and controlling the speed. check the speed sensor and its,connectors, clean the speed sensor. for that u have to open the motor cover.
ok

L5 or LS is short for Low Speed error. It basically means that the speed sensor is not picking up a signal. Unfortunately its a pretty vague error code and can be caused by several different problems. First you have to determine whether or not you have belt movement. If you have a LS with belt movement you know that it is related to the speed sensor itself (or the MCB motor control board - the part of the MCB that handles speed sensing function). If you are getting an LS without belt movement you have to check to see if you have power output from the MCB. If you have no power output, check fuses, if fuses are good, you will need the MCB replaced. If you have sufficient output its drive motor related. Aside from a problem with the drive motor, it is possible that another factor is stopping the motor from turning (ie locked up roller bearing, foreign debris, etc.) If it is a case of
faulty electronics the next question is, is to figure out what caused it to fail. Most MCBs don't fail on their own, something else usually causes them to fail. The bottom line: The LS error can be
complicated and should really be inspected by a professional to full assess the issue. What I am saying is call the manufacturer and if it is under warranty send the treadmill back.

More likely LS= Loss Signal open the motor shroud on the motor their should be a cylindrical shape sensor (magnetic). Plug in treadmill and on the motor control board their should be a L E D (red or amber) by manually rotating the motor you should see that light flicker if it does sensor is good if not replace sensor. Next thing if sensor is good check motor brushes to see if they are mis-align or worn if worn less than 3/8" in length replace them

Hi,

The L5 message means that there is a problem with the speed setting switches. Some models have one set of speed adjusting stitches on the handlebar and another set on the console. One of them is defective and is causing the problem.

hi,
LS mean low speed error, Please check the sensor wire( if moor move). if not move please check control board.