Saturday 28 June 2014

Check treadmill LED controller status PF905 PF906 LIEO | Support for York, Technofit, Raleigh Power Runner, Trimmaster, Trimline

Contact us for assistance and spare parts and visit our website www.partsfortreadmill.com

How to analyse electronic problems in treadmills
1. Verify if the controller is faulty:
a. when the treadmill only works for a while or is not working at all, first of all check the status of the green LED on the controller. If the green LED continues to blink, it means that the controller must be replaced with a new one;

b. if the green LED stays off all the time, it means that the controller has no problem and is working properly. At this point you should check that the computer and all the wiring are all ok, in particular that the wiring is not broken. Where necessary, cross-checking with a new computer and wiring.

Restart the treadmill every time you run a test. You should also check the speed sensor and replace if necessary.
2. Treadmill board LED meanings

PLEASE NOTE THAT THE LED 2 AND LED 3 COULD HAVE OPPOSITE MEANING IN SOME PF CONTROLLERS (2 = TILT, 3 = SPEED)

LED1 (green LED)

1. The code:
a. 1 flash ... reading the trigger
b. 3 flashes ... the power KO, replace the card
c. 4 flashes ... current overload, turn off and on again
d. 5 flashes ... overload of motor voltage
and. 6 flashes ... successful software installation
f. 8 flashes ... the motor voltage is lower than the expected value after giving the start command

2. Overload Indicator: This green LED lights when the current is above the set value during operation. If the overload continues for 3 ~ 5 seconds, the treadmill will turn off and the green LED flashes 4 times. Turn the treadmill off and on again.

LED2 (red LED)
Speed ​​Indicator: This red LED lights when you change the value of the speed of travel (either increasing or decreasing) and turns off when it reaches the desired value. 

LED3 (red LED)
Tilt Indicator: This red LED lights when you operate the incline on the treadmill (both
upward and downward) and turns off when it reaches the desired value.



Buy at below links quality and convenient treadmill controllers and motors
  1. Treadmill controller 220 to 240 VAC input (Europe / Asia / Australia)
  2. Treadmill controllers 110-120 VAC input (North America) 
  3. Treadmill motor 


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82 comments:

  1. Honey buster5 August 2014 at 12:05

    I am repairing treadmills since 4 years and till now I had collected like 40 of those boards with the same exact problem
    3 flashes and relay opening after 3.2.1 go
    I figure it out that from one of the pins of the PIC controller is not getting out 5V to trigger a transistor for 12V to open the relay
    is it the PIC broken or something else is causing the issue and the board just stay in a secure mode or something like that
    maybe the IGBT burn away and it reads it ????
    not support from ENDEX at all
    I try to contact them many times without success
    Thank you for any comments

    ReplyDelete
    Replies
    1. Anonymous7 August 2014 at 09:02

      Hi Honey,

      if it's a PF controller as in the picture I confirm it's likely to be IGBT broken.
      By the way PF is an ENDEX compatible controller. But I think Endex controllers are far better than the PF/LIEO controllers.
      Where are you located? I'm looking for electronic repairs around. Write me at tec@partsfortreadmill.com

      Delete
    2. Unknown13 January 2015 at 12:56

      you must check 390 kohm resistor which is used to check on the capacitor (big one) voltage.

      B.Buyukguzel

      Delete
    3. carrot22 May 2019 at 17:18

      could you please send me the power signal IC number of PF-905 controller.Thanks.

      Delete
    4. Pradeep18 September 2020 at 20:39

      Top244 ic power ic number, vmcan you plz send me pf905 zenar diode d 4 voltage it placed near top244 ic

      Delete
    5. Pradeep18 September 2020 at 20:42

      Top244

      Delete
    6. Eraser23 January 2021 at 14:40

      Hi Honey buster,

      do you have found a solution for this problem?
      I have the same problem on my PF-905 (with poti) and measured already the complete control area of the relay. It is the same that the signal from the PIC for the low side is missing, high side switching is OK.

      Thanks

      Delete
    7. dino8 April 2022 at 22:28

      salve volevo sapere il valore di D4 grazie

      Delete
  2. Unknown4 February 2015 at 06:26

    hi sir i have a pf-906 trade mill board i replace the main transistor 2 times but it keep burning ever time(sgw30n60)...  is there another something to replace... before start the green led light  keeps blink 3 times and after start it keeps blinking 8 times.. plz hope u reply soon?

    ReplyDelete
  3. Anonymous4 February 2015 at 18:06

    Please check the motor. If the motor has some electrick leaks, it depends on the motor.
    You can also test the controller with a 220V bulbe to be connected to m- and m+ terminals instead of the motor.
    Other tipp is to check capacitors, if it leaks, may bring problems to transistors.

    ReplyDelete
  4. Unknown5 February 2015 at 12:53

    hi sir i replaced the transistor and the big capacitor and i connect the connectors and gave power but did not run it and i check the green light it blinks 3 times it means the power ko. replace the card what it means ? i cannot understand sir? plz can u explain it to me?

    ReplyDelete
  5. Unknown10 June 2015 at 07:11

    I have a treadmill with pf905 controller, it's working, when reached 6miniutes it's off automatically and indicated e - 1

    ReplyDelete
    Replies
    1. Unknown1 September 2020 at 15:26

      hi if you have PF905 board can plz send SMD zenar diode D4 voltage valve it work with Top244yn

      Delete
  6. Anonymous10 June 2015 at 10:46

    Hi Mohamed,

    make the following test. Test treadmill with NOBODY on it at speed 8 km/h,
    if it stops, it's a controller fault.

    if it works, but it stops when somebody on treadmill, it's MOTOR fault or problem with running belt (too old, no lubrification)

    ReplyDelete
    Replies
    1. Unknown13 June 2015 at 08:34

      Thank you, very much sir, I solve the problem, with ur advice, and thanks again, good job,

      Delete
    2. Unknown13 June 2015 at 08:39

      I got another fault of my pf905 controller, it's not running smoothly, it's getting stuck, and if I put speed 9/8 it's working, if put low speed 3/4 it's not run, I replace the controller than working properly, cn u tell me how cn I repair the controller. Pls explain

      Delete
  7. Anonymous13 June 2015 at 09:13

    Sorry this is very difficult to repair on PF905. The problem may be in the current limit, but old models of PF905 don't have the trimmer to regulate the limit. Usually we don't repair those moldels.

    ReplyDelete
  8. Unknown25 November 2015 at 07:02

    Hello! Does anyone know where I can find a schematic for a pf906 board? I need to replace a small diode but can't read the details of the old as its burnt.
    Thanks!

    ReplyDelete
  9. Unknown25 November 2015 at 16:08

    Hi all. Anyone have a schematic for the PF906 board? I need to repair one. Thanks!!!

    ReplyDelete
  10. Anonymous25 November 2015 at 16:44

    sorry we don't have the schematics, according to my experience is better to replace the old PF906 (and also 901-902 and 905) with the new ones because repair is time consuming and most of the times is not reliable because:
    1) the old versions of PF don't have a trimmer to set the torque
    2) they used a poor quality glue which becomes conductive over time and this brings to random faults.

    ReplyDelete
  11. Unknown26 November 2015 at 21:54

    Thanks for the advice. Is there a way to tell if a to-be purchased board is a 'new one'? Here in Italy they are asking €225 So, if I'm going to have to pay that much I'd like to know I'm getting a newer one.

    ReplyDelete
  12. Anonymous26 November 2015 at 22:01

    Hi Bryan, new ones have the trimmer for regulation, here you can buy the new pf906 but I'm not sure if they still have in stock
    http://ricambitapisroulant.salesource.it/power-first-pf906.html

    ReplyDelete
    Replies
    1. Unknown26 November 2015 at 22:10

      I'll go for it. Hopefully they have it in stock. Thanks again!

      Delete
    2. Unknown26 November 2015 at 22:14

      My treadmill has an optical speed sensor. Will the new board support it? I read somewhere that there are some with magnetic sensors?

      Delete
  13. Anonymous26 November 2015 at 22:59

    Hi the controllers PF have two connectors one for magnetic and one for optic sensor. You'll use the optic and forget about the magnetic.

    ReplyDelete
  14. Unknown11 December 2016 at 17:21

    Hello
    I have with my PF905 also the problem that the board after ca 10sec starts 3x flashing. It is the new ohne with the trimmer.
    The following parts I have already exchanged.
    - IGBT,
    - main transistor,
    - the Elkos (4x 470yF + 2x 47yF + 1x1yF).

    The two large 400V Elkos and the ceramic capacitors I have not yet exchanged. Could it be due to these parts?

    The motor runs with 12V / 3A power supply! Can the board actually be tested in the removed state with 230V supply?
    Thank you very much

    ReplyDelete
  15. Unknown11 December 2016 at 17:24

    Hello
    I have with my PF905 also the problem that the board after ca 10sec starts 3x flashing. Its the new ohne with the trimmer.

    The following parts I have already exchanged:
    - IGBT,
    - main transistor,
    - the Elkos (4x 470yF + 2x 47yF + 1x1yF).

    The two large 400V Elkos and the ceramic capacitors I have not yet exchanged. Could it be due to these parts?

    The motor runs with 12V / 3A power supply!
    Can the board actually be tested in the removed state with 230V supply?
    Thank you very much

    ReplyDelete
  16. Anonymous11 December 2016 at 18:02

    How are you testing the controller? With the original motor?
    I'd suggest to connect a bulb (220V incandescence) to the M- / M+, if the controller is repaired you should be able to light up with start and increase light with speed +.
    I don't think you can solve the problem by replacing the capacitors.

    In my opinion if it starts and after 10 seconds LED light, the most likely is that you have a short circuit in the motor. If you test the controller with the bulb you can make sure about this.

    ReplyDelete
  17. Unknown11 December 2016 at 20:47

    I am tested the Controller with the Original motor and with a 220V blub.
    But in both situations there is no voltage on M+ M-, when i pressed start or speed+

    When i turned on the main switch and nothing else (dont press the Start-Button ) the Controller also starts flashing after 10sec.

    ReplyDelete
    Replies
    1. Anonymous11 December 2016 at 22:06

      Ok, so power to m+/m-. If you don't hear the relay clicking when you press start, it may be a cable or display problem.
      If you hear the click (power relay), maybe the controller chip is faulty. If the chip is faulty, it's better to replace controller.

      Delete
    2. Unknown12 December 2016 at 22:08

      Thank you for your quick answers and your help

      I checked the controller again today.
      When I press the Start button, I can't hear a click from the relay.
      The red LED (LED2) on the board lights up briefly (LED2) when I press the start button.
      So I check again tomorrow all cables and the display for possible damage.
      However, I do not quite know that the board always flashes 3x when i switched on (after 10 seconds) without a start command.
      Checks the main board when switched "power on" the function of the diplay board ??
      Unfortunately, I am a bit desperate, because I am now no longer sure whether a new board would solve my problem at all.

      I hope that tomorrow I can find a fault on the cables or display.
      Thank you very much

      Delete
  18. Anonymous20 January 2017 at 10:05

    Hi there, I am working with a PF-906-06 PCB as in the link you showed: http://ricambitapisroulant.salesource.it/power-first-pf906.html

    However without the small PCB placed over U6.

    The fault is that the treadmill doesn't power up at all, no LED's flashing on this PCB and none of the Treadmill controls powering up. The two fuses in place on this PCB are fine. The only noticeable power on the treadmill is that the incline adjustment assembly sometimes makes an arcing sound (like a transformer with broken windings) when the treadmill has been off for a number of days, this sound will stop after around 30 seconds - 1 minute.
    I noticed that RLA2 has low resistance across the open switch (46.8kOhm), and D4 is short circuit (when in circuit).
    Would it be safe to say that this PCB is the source of the power issue on the treadmill? I'm 95% sure this is the case.
    Any information would be gratefully received!

    ReplyDelete
    Replies
    1. Anonymous20 January 2017 at 14:21

      dear Pierce, I'd double check the small transformer on the controller, connected at TJ1 / TJ2.
      Unfortunately the old versions of the PF controllers (the ones without the trimmer on the U6) are not very reliable. Labs which work with us usually replace them at all without trying to repair, because often they require too much time.

      Delete
    2. Rossi12 January 2019 at 10:41

      Hi there, does anybody know what this transformer should deliver? I did not find this transformer anywhere to buy. Mine is defect. The part number on it says TB-EE25-01A

      Thanks ;)

      Delete
    3. Rossi12 January 2019 at 10:41

      Hi there, does anybody know what this transformer should deliver? I did not find this transformer anywhere to buy. Mine is defect. The part number on it says TB-EE25-01A

      Thanks ;)

      Delete
  19. Anonymous20 January 2017 at 14:51

    >1M ohm Resistance across the open gate, I applied 30V 2.5A across the coil and my probe sparked on contact, I then went on to check the resistance of the coil and found it to be 0.5 Ohm.
    It would make sense now that it has been pointed out. The incline adjustment for the treadmill draws power through this relay, which would explain the buzzing sound. I may perhaps try changing this relay before ordering a new PCB, as, if this excessive power draw is lost, perhaps the power will return to the rest of the treadmill.
    Many thanks for your support, again, I appreciate any further information you may be able to give.

    ReplyDelete
  20. Unknown13 March 2017 at 10:23

    hi, i have a pf 905 controller, its working fine, but after 5 - 10 Min automatically power off. no display.

    ReplyDelete
    Replies
    1. Anonymous13 March 2017 at 10:39

      try with nobody on the treadmill and max speed. Does it stop?

      Delete
  21. Unknown19 July 2017 at 07:55

    Hay, I have a treadmill and it was partially repaired. Now one connector is remaining without any connector. The machine is not powering up. How to solve this issue.

    ReplyDelete
    Replies
    1. Anonymous19 July 2017 at 08:32

      Please send the picture of the cabling to aftersales@partsfortreadmill.com so that they can help you understand what the problem is.

      Delete
  22. Unknown9 September 2017 at 09:27

    My trendmil stop when it reached about 12mins and smell burn.the motor is fine not hot but the transformer is hot 110v

    ReplyDelete
  23. Anonymous9 September 2017 at 09:40

    If the belt is more than 4 years old, you should replace the running belt with a low friction one.
    This problem happens because there is too much friction between running belt and running deck.
    All belts here are low friction belts: http://www.partsfortreadmill.com/index.php/parts-for-treadmill/belt-for-treadmill/

    ReplyDelete
  24. Unknown1 October 2018 at 14:33

    Hi,i have a pf 905 controller board which no indicaton after power on. ac supply is come to tha board .is tha on bord power supply should work without any input

    ReplyDelete
    Replies
    1. Anonymous6 October 2018 at 19:42

      I suggest you to replace the whole controller. The old revisions of controllers PF had some desing problem which resulted in some problems. You can find the new revision of PF905 controller at the link Treadmill controller PF905

      Delete
  25. Unknown12 November 2018 at 21:13

    hello, can you tell me which controller is U6? My chip is missing a part (exploded). Thank you

    ReplyDelete
    Replies
    1. Anonymous24 November 2018 at 17:24

      No idea sorry, those are usually units so very difficult to find them and replace. I think you have to change the whole controller.

      Delete
  26. Rossi13 January 2019 at 08:28

    My treadmill doesn’t power up, no leds. I think the transformer is bad on the board. Where can I get a replacement? I couldn’t find any specifications for it. TB-EE25-01A Thanks

    ReplyDelete
    Replies
    1. Anonymous18 January 2019 at 11:45

      Hi please contact at www.partsfortreadmill.com and send a photo of controller and transformer, they will be able to understand which is the right one

      Delete
  27. carrot15 April 2019 at 05:52

    Hi,
    could you please send me the power ic number.Is it TOP244 or TOP245.This chip was burn and could not find the value.Thanks.

    ReplyDelete
    Replies
    1. carrot22 April 2019 at 19:36

      Please help me on find this.

      Delete
    2. Anonymous25 April 2019 at 16:42

      Hi Carrot usually they are programmed ICs it is not possible to find them, we usually replace the whole controller. You can find here replacement controllers treadmill controllers

      Delete
    3. carrot1 May 2019 at 12:38

      Thanks.This ic is for the power supply it is not programmable.6-pin (TO-220-7C) package.pls send me ur mail to send an image.

      Delete
  28. Unknown19 May 2019 at 07:19

    Hi Friends, Kindly let me know the correct numbers of power transistors in PF-905 motor controlling board. It is not clear in my existing board. Your prompt responses are highly appreciated. Thanks.

    ReplyDelete
    Replies
    1. Pradeep10 September 2020 at 07:17

      Hi i am repairing pf 905 pcb and cant identify d4 zener diode voltage it has burned it place with top 244 can you plz send me that zener diode voltage if you have that

      Delete
  29. Magnus25 October 2019 at 22:07

    Hi, my treadmill using mainbord PF-906-06 is just running on low speed, what can be wrong? everything else working fine.
    Thanks.

    ReplyDelete
    Replies
    1. Anonymous26 October 2019 at 17:19

      If it runs at low speed and no error is shown on the display, it may be a sensor problem. You may try to clean the sensor or replace it. The PF906 sensor is available here: PF906 treadmill controller sensor

      Delete
  30. djk17 January 2020 at 10:30

    What is the part number/model replacement controller for the PF - 906?

    ReplyDelete
    Replies
    1. Anonymous17 January 2020 at 14:22

      They don't manufacture the original controller pf906 anymore. On this website you will find the cheapest replacement fully compatible with that controller: pf compatible treadmill controller

      Delete
  31. Kiwi9 April 2020 at 06:20

    Hi, I have a treadmill fitted with a PF-906-06 board. The belt motor isn't running on start up. I tested the motor by running it off an independent 24VDC supply and it's runs ok. I'm getting a DC output from the board to the motor when using multimeter to measure. It starts around 30VDC and builds up gradually. I've connected a small 24vdc fan up to motor output and it doesn't work. I'd just replace the board but I'm in lockdown due to Covid-19. Would like to get the Misses off my case by repairing the existing board. I have the ability to do this if you can give me some indication of what to replace. Cheers.

    ReplyDelete
    Replies
    1. Anonymous11 April 2020 at 12:44

      Dear Kiwi, you can buy a new replacement controller here: https://www.partsfortreadmill.com/power-first-pf906-treadmill-controller.html. It looks it is a controller problem. Regarding how to repair, I have no idea, what I know is that they usually replace the parts which are connected to the heat sink which are under load. But according to experience other components needs to be replaced. If you can find those cheap you can try to repair yourself, eventually the controller will be broken again or the repair is unsuccessful you can buy the new one.

      Delete
  32. Lanes14 June 2020 at 16:48

    Hi I have a treadmill with PF-905 motor control board. treadmill suddenly stopped while increasing speed with the console just blanked out. Checking the incoming supply and transformer , all are fine. there is 220V going to the motor controller board. Fuse not blown and the red Led blinking with 1 sec interval.
    Console not showing anything and seems no power to it.
    The motor is 180VDc Power first, 1.75HP. testing with battery and it seems able to rotate.
    So may I confirm that most likely the fault is with the PF-905 board?
    Where can I get a replacement board?

    ReplyDelete
    Replies
    1. Anonymous15 June 2020 at 09:54

      Dear Lanes, yes it looks a fault in the controller power supply unit. You can buy a replacement here: https://www.partsfortreadmill.com/power-first-pf905-treadmill-controller.html

      Delete
  33. Pradeep23 August 2020 at 05:53

    Hi can send d4 zenar voltage

    ReplyDelete
  34. Pradeep18 September 2020 at 20:33

    Hi want replace one zener diode in pf905 board diode no is d4 cide in board how i can replace and what is the valtage of that zenar diode. My clant is noy willing to replace nee board plz help

    ReplyDelete
  35. Prakash29 September 2020 at 09:18

    Hi sir,
    Im technician of treadmill. Niw i have a problem in pf 906,if starting the machine rotating 3 second, after off, please help me.

    ReplyDelete
  36. Unknown30 September 2020 at 19:06

    Please tell me PF 905 board smps power ic u6 number

    ReplyDelete
  37. Martel7 November 2020 at 11:01

    Please, do you know which resistor is on new revision board replaced with potentiometer for curent sensing ?

    ReplyDelete
  38. Martel7 November 2020 at 11:09

    Please, do you know, which resistor is replaced by potentiometer on new revision boards? Or has anybody schematic?

    ReplyDelete
  39. pr20109 December 2020 at 10:03

    Hi,
    My pf-906 seems has no power.
    Fuse is okay.
    No led lights.

    ReplyDelete
  40. Eraser23 January 2021 at 14:35

    Hello
    I have also a problem with the PF-905 board (new version with the poti over U6).
    There are the same symptoms like Honey Buster had in the first post on this page. After starting the treadmill, a countdown counts from 3 to 1, which is OK, but then the motor doesn't start running. I have figured out, that the relay has not switched and so no power is transferred to the power section which is driving the motor. The relay and free-wheel diode is OK, the transistors which are switching the relay are also OK. The high side switching of the relay is functioning (is shown with the red LED and also measured), but the low side switching to ground doesn't take place. The signal for this low side switching is coming from the controller chip.
    So the controller doesn't send the signal to switch the relay, the question is why. It looks like that some input to the controller is missing and that is why it is not enabling the relay.
    I have also tested the 390K-resistor, which the user Unknown (B.Buyukguzel) has commented, but that one is also good.

    Does anybody of you have more information about this problem?
    I would thankfully donate some money for the answer to my problem.

    Thanks
    Wolfgang

    ReplyDelete
  41. Eraser23 January 2021 at 14:38

    @partsfortreadmills:

    In your information about the LED-status the text for LED2 and LED3 must be changed. LED2 is for incline and LED3 for speed.
    This is the case on my PF-905 (with poti over controler)

    ReplyDelete
    Replies
    1. Anonymous23 January 2021 at 16:37

      Apparently there are some different revisions of the PF-905 boards. We will add your note in the post so that it is clearer for the other people. Thanks.

      Delete
  42. Eraser24 January 2021 at 15:00

    One question:
    The replacement board for the PF-905 would be the Endex DCMD66.
    The DCMD66 has only one big cap instead of 2 on the PF-905. The same with the IGBT and so on. I have the 2PS-motor model on my treadmill, so I was thinking if the DCMD66 can handle it with less parts at the power area on the board.

    ReplyDelete
    Replies
    1. Anonymous24 January 2021 at 18:20

      Yes, we installed several times and we didn't get any problem. In my opinion the DCMD is more reliable than the PF. Even when it comes to the repair, when we send a controller for repair in a lab, the repairs of Endex/DCMD are always easier and more reliable than the repairs of PF.

      Delete
  43. Wess30 June 2021 at 07:34

    I follow your posts on treadmills, kudos on the good work!

    I have a treadmill with a PF-905 controller that gives a E1 error after some seconds running. I can hear the relay clicking to and fro and the E01 pops up and the machine stops. The Incline works no problem. I tried the bulb method you recommend here and it gives the same error. I tried at high speed and before it stops it even goes backwards (?) Is the DCMD66 controller work on this treadmill with the current control panel?

    Thanks a lot!

    Wess

    ReplyDelete
    Replies
    1. Anonymous30 June 2021 at 07:55

      Hi Wess,

      the right controller for your repair is this one

      https://www.partsfortreadmill.com/pf905-pf906-dkn-power-first-bh-fitness-replacement-kit.html

      If the treadmill sometimes moves backwards, it looks like a motor controller problem. In no way the console or motor can make the treadmill run backwards.

      Delete
  44. Unknown19 November 2021 at 04:03

    Ji sir my treadmill stops after 3 min. sometimes after 5 min.what will be the problem kindly suggest

    ReplyDelete
    Replies
    1. Anonymous22 November 2021 at 22:07

      hi, most likely it is the speed sensor.

      Delete

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