Precor C956i Treadmills with HR / WholeSale - Page 2 - Answered Questions & Fixed issues

Removethe red "STOP" cover. The cover may pushes against a switch. If theswitch moves too far down and rests against the cover, it will be stuck in alock position causing the error message. To remove the red STOP cover, removethe few screws behind the console. When the front cover is off, turn it overand unscrew the two screws that hold the red stop cover. Then push the coverout through the FRONT. Do not attempt to lift it out by the end with the screwholes. It will not pull out that way. Test the machine before screwing thepanels back again. The message should no longer show STOP KEY. Test the visiblewhite small switch that you uncovered by removing the red flap. The messageshould stop when you press the switch. If theproblem still exists then open the console and check under the magnet holderfrom inside you may see rust ire broken cable there, if you find thisthen you may have to replace it. Hopethis will help you.AV

Service manual is located HERE
User manual HERE.
Hope this helps.

The speed sensor is a hall effect sensor that emits a pulse when a flywheel lobe passes between
its transmitter and receiver. The speed control circuit processes the pulse train emitted by the
speed sensor. The speed sensor signal is a real time representation of the operating speed of
the treadmill. The speed control circuit compares the real time speed (speed sensor output) with
the speed that it expects the treadmill to be operating at and acts accordingly to control treadmill
speed or initiate an error code sequence, if necessary. Typically, if a problem exists with the
speed sensor the drive motor will operate (perhaps only briefly) before a speed related error
occurs (errors 20-26).
1. Set the treadmill circuit breaker in the “on” position. Using a DC voltmeter, measure
the voltage between terminal 3 of J2 (green wire) and terminal 4 of J2 (black wire) on
the lower PCA. Slowly, rotate the drive motor flywheel. The voltage should read
approximately 5 Vdc when a flywheel lobe is between the speed sensor “legs” and
approximately 0.25 Vdc when a flywheel lobe is not between the speed sensor “legs”

2. If the voltages in step 1 are correct, go to step 5. If the voltage in step 1 is 0 Vdc or
significantly low when a flywheel lobe is between the speed sensor “legs, continue with step
3.
3. Measure the voltage between terminal 1 of J2 (red wire) and terminal 4 of J2 (black wire) on
the lower PCA. The voltage should read approximately 5 Vdc.
Flywheel
Speed
Sensor C954, C956 Treadmill
Page 1-24 Page 24
4. If the voltage is missing or significantly low, disconnect the speed sensor plug from the lower
PCA. Measure the voltage between pins 1 & 4 of the J2 plug on the lower PCA. If the
voltage is approximately 5 Vdc, replace the speed sensor. If the voltage is missing or
significantly low, replace the lower PCA.
5. At this point the speed sensor output is good, but a speed error occurs. There are two
potential causes for this condition. They are upper PCA or lower PCA. There are no good
means of troubleshooting these components other than substituting known good
components. Replace only one component at a time. If the component that you replaced
does not correct the problem, replace the original component. Try substituting the lower
PCA first then the upper PCA, if necessary.

tips extracted from the technical manual Precor956

You would need to replace the keypad overlay on the console.

If the EFX 544 has polar Heart Rate attach to the upper electronics your chest strap should be transmitting and the unit should be receiving. If your chest strap is more than 3 yrs old usually the battery will die and needs to be replaced or you have a defective receiver and will have to be replaced

1. You may have a worn belt and deck problem ( #1 problem on treadmills ). Test by the following procedure:
a) without the power on stand on the walking belt
b) push the belt in the direction it normally turns
c) if the belt is very difficult to turn (on most treadmill) this means that you have high belt/deck friction.

You must physically inspect the belt and deck. The deck should be smooth. The belt should have aconsistent feel from side to side (a belt can be worn out without any sensory signs of a problem). If you feel deep grooves in the deck or uneven wear on the underside of the belt, part replacement is necessary. Continued use of your treadmill may damage expensive electrical components. If their is no signs of excessive wear then the next step is to lubricate the deck follow this procedure:

Before applying lubricant, the belt must have the tension reduced and cleaned deck. Loosen the tension roller by following the instructions in your owner’s manual. Do not loosen the bolts in the tension roller too far or the bolts will come out of the roller shaft. This step may not be necessary for your treadmill model or belt and deck condition.
Contaminants are the worst enemy of your belt and deck. Some treadmills may have an excessive accumulation of dirt and contaminants. If these are trapped during the belt lube process, significant damage will occur. Lift the belt and slide a moist towel between belt and deck, slide the towel the length of the unit to catch the contaminants do this a number of times inspect towel and need be use a fresh towel and repeat cleaning let dry then apply the lube in the center upper third of deck then start unit and walk on it @ 1-2mph for about 5 min. You may purchase the lube from National Gym Supply @ gympart.com Part# TM001 or call them @ 1-800-496-7278 their on the west coast. At this point I believe your problem should be resolved if the above procedures have taken care of problem take a look at the next step, as mentioned the #1 cause of treadmill failure is lack of maintenance of the belt a

hat sound is due to the bearing failing inside the motor this is cause by capacitance discharge thru the armature thru the bearings. these unit can be rebulit I 've done plenty

that sound is due to the bearing failing inside the motor this is cause by capacitance discharge thru the armature thru the bearings. these unit can be rebulit I 've done plenty

Hi
not to sound funny but are you sure that you have this tread set in the units (mpg/kph) that you require. i have worked in loads of gyms and its a common problem that people think the belt is running to fast because its set in kph and that thinks its in miles eg 9mph = 14.5kph
you can check and change the units in the club setting menu.
hope this helps :)

Check RPM Feedback: The most common cause for the timer to stop after 7 seconds on a Precor elliptical is NO RPM feedback. Start by checking the connection of the speed sensor to the lower board. If necessary, reset the connection. Also, inspect the magnet located on the user's right crank arm (versions 1 and 2) or the user's left crank arm (version 3). The magnet passes the speed sensor with each revolution of the crank arm. Ensure that the magnet is installed correctly, with its south pole facing the speed sensor. You can verify the magnet polarity using another magnet or a compass. Speed Sensor Spacing: Confirm that the spacing between the speed sensor and the magnet is within the range of 1/8" to 1/4". Adjust if necessary. Battery and Power: If your elliptical has a battery, check its status. A low battery could cause issues. Consider using the optional power adapter kit to ensure consistent power supply. Error Codes and Clearing Logs: Check for any error codes displayed on the console. Clear the error codes and power down the unit. Inspect cable connections to ensure they are fully seated. Power on the unit and monitor the error code log for any reoccurrence. Professional Assistance: If the issue persists, consider reaching out to professional repair services or contacting Precor support for further assistance.

Il existe deux raisons pour lesquelles votre v?lo elliptique Precor EFX 556 d?marre lentement. Tout d'abord, un probl?me ?lectrique, tel qu'un cordon d'alimentation mal branch? ou endommag?, ou m?me une prise d?fectueuse, pourrait survivre. Un condensateur d?fectueux ? l'int?rieur de l'appareil, qui peut causer des retards au moment de la mise sous tension, est une autre explication. Pour r?soudre ces probl?mes, commencez par v?rifier les connexions ?lectriques. Envisagez d'appeler un technicien qualifi? pour diagnostiquer et r?soudre un probl?me ?lectrique ou ?lectronique si le probl?me persiste.

hello there, check if the lift control system is detected the lift is moving in the opposite direction of the issued lift command. This error would happen when the lift was already in motion (typically downward) when a lift command in the opposite direction (lift upward) was issued.

A slow boot up on a Precor EFX 546 elliptical machine can be caused by several factors, including:

1. Low battery voltage: If the battery voltage is low, the machine may take longer to boot up. This can be due to a weak or old battery, or a problem with the battery charger.
2. Dirty or corroded contacts: Dirt, dust, or corrosion on the battery contacts or other electrical contacts can interfere with the machine's ability to start up quickly.
3. Faulty console or display board: If the console or display board is malfunctioning, it may take longer for the machine to boot up or may not boot up at all.
4. Loose or damaged cables or connections: Loose or damaged cables or connections can prevent the machine from starting up properly and may cause a slow boot up.
5. Outdated software: If the software on the machine is outdated, it may take longer for the machine to boot up or it may not start up at all.

To troubleshoot a slow boot up on a Precor EFX 546, you can try the following steps:

1. Check the battery voltage and replace the battery if necessary.
2. Clean the contacts on the battery and other electrical components.
3. Inspect the cables and connections for damage or looseness.
4. Check for any error codes or messages on the console or display board and consult the user manual for troubleshooting steps.
5. Check for any available software updates and install them if necessary.

If none of these steps resolve the issue, you may need to contact a professional technician for further assistance.

Hey Fabian, it's possible that the resistance motor or sensors on your wife's Precor 556i/AXGE may need to be recalibrated. Try powering off the machine, unplugging it for a minute, and then plugging it back in to see if that resets the calibration. If the problem persists, you can try recalibrating the machine manually. There should be instructions in the user manual or online. If that doesn't work, then contacting customer service or a certified technician may be necessary. I hope this helps!

If you have checked the safety switch on your Precor 9.45 treadmill and everything seems to be intact, and the "reset safety switch" message still won't go away, it's possible that the switch itself is faulty or the console is not receiving the signal from the switch. You can try cleaning the switch and the area around it, and also check the wires that connect the switch to the console to make sure they are not damaged. If the switch or wires appear to be damaged, they may need to be replaced. If cleaning and checking the switch and wires doesn't resolve the issue, it's recommended that you contact the manufacturer or a qualified repair technician to further diagnose and fix the problem. They may be able to provide additional troubleshooting steps or suggest other possible solutions.

Everything is fixable :>) Service manual in the link https://www.google.com/search?q=Precor+546i+Elliptical+Cross-Trainer+stuck+at+highest+position ..

This is an error code for 1 of 2 things. Something was spilt on the display causing a detected malfunction. Or, you are experiencing a power sag where the unit is plugged in. Try an isolated AC circuit. (Nothing else is ON or plugged in)

Two likely candidates: Belt or tread. Lubricating the tread would be the easiest starting point; but if you're running at 7 or more you've probably already thought of that. If the cover isn't too difficult to remove, you can expose the drive belt and the squeaking volume change would be an indicator that the drive belt is the problem.

Contact Precor direct. Details at the bottom of the page. It uses a non-standard method of resistance. https://www.precor.com/en-ca/efx%C2%AE-546i-elliptical-fitness-crosstrainer%E2%84%A2 ..