BH FITNESS S1Ti Service And Repair Manual
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BH FITNESS S1Ti Service And Repair Manual

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BH Fitness Service and Repair Manual:
S1Ti, T300i, T500i
S1Ti
T300i
T500i
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Summary of Contents for BH FITNESS S1Ti

  • Page 1 BH Fitness Service and Repair Manual: S1Ti, T300i, T500i S1Ti T300i T500i...
  • Page 2 S1Ti Service Manual Table of Contents Warnings…………………………………….....pg. 3 Current Compensation Procedure.……….....pg. 4 Test Mode……………………………………...pg. 6 Calibration Procedure……………………....pg. 7 No Display……………………………………..pg. 9 E1 Error……………………..…………….…………pg. 16 E2 Error………………………………………………pg. 18 E3 Error.……………………………………………..pg. 21 E4 Error………………………………………...pg. 24 E6 Error………………………………………………pg. 27 E8 Error………………………………………………pg. 34 Table of Contents: Repair and Replacements…..pg. 35...
  • Page 3 Warnings page In these pages, you will experience 3 levels of warnings about the procedures you are about to perform. Understand the level of danger each sign signifies and use the proper amount of caution with each procedure. When you see this sign, we will be performing a test that requires measuring line voltage or a similar voltage that could cause serious injury or death.
  • Page 4 S1Ti Current Compensation Procedure This procedure can help you smooth out motor operation after replacing a new DC motor or controller or on an older DC motor or controller not working properly. When the computer shows “ENTER WEIGHT”, remove the safety key and press and hold while replacing the safety key.
  • Page 5 Turning the value too low will cause the running belt to be sluggish and bog down too much under load. Increase the value to eliminate bogging.
  • Page 6 S1Ti Test Mode Enter this mode to check software version, get miles and hours, perform a display test or key test. To enter test mode, turn on the power switch, remove the safety key and press and hold simultaneously while placing the safety key.
  • Page 7 S1Ti Calibration Procedure From the “ENTER WEIGHT” screen, remove the safety key. Press and hold the simultaneously while replacing the safety key will select English units until the computer shows will select metric units If the value is not 60.00, use the to set to 60.00...
  • Page 8 If the computer shows “INC OFF”, press to turn the incline on Press and computer will show If the computer shows “GS OFF”, press turn the GS on Press and computer will show and computer will show “EN1 PRESS START TO Press CALIBRATE”...
  • Page 9 S1Ti No Display Overview Tech Note: The display shuts off to conserve energy after 4 minutes. Pressing a button will Isolate power wire turn the display back on. socket and power wires. Replace bad This procedure assumes proper power supplied part.
  • Page 10 S1Ti No Display Step 1: Visually check for power switch light Turn the power switch on and if 110 VAC is present at the switch, the light in the center of the switch should be lit. No light. Go to Step Yes the switch is lit, go to Step 5.
  • Page 11 S1Ti No Display Step 3: Check power wire socket and wires Unplug the power cord from the unit . Set the voltmeter for VAC. Detach black and white power wires from bottom of power switch. Place 1 lead in the black wire and one lead in white wire as shown.
  • Page 12 S1Ti No Display Step 5: Check for circuit breaker trip Visually inspect circuit breaker for being popped out. Unplug the power cord from the unit. Set the voltmeter for . Place 1 lead on each terminal of the circuit breaker.
  • Page 13 S1Ti No Display Step 7: Visually check light on the controller With the unit plugged in and turned on, the controller light should be on if 110VAC is present at the controller. Controller light controller light is not on. Go to...
  • Page 14 S1Ti No Display Step 9: Check circuit breaker and wires Turn off the power switch and unplug the power cord from the unit . Set the voltmeter for . Place 1 lead in the black wire going to the circuit breaker and one lead into the black wire going from the circuit breaker as shown The voltmeter should read around .3...
  • Page 15 S1Ti No Display Step 11: Check resistance on control wire up and lower Turn the power switch off and unplug the power cord. Set the voltmeter for  Disconnect the control wire at the top and bottom. Using the metal pads on the control wire connector check each wire at the top and bottom.
  • Page 16 S1Ti E1 error overview This error is a communication error between the computer and the controller. Loss of connection on the control wire up or lower will cause this error. Step 1. Check Step 2. Check Replace Good Good continuity on...
  • Page 17 S1Ti E1 error Step 1: Check resistance on control wire up and lower Turn the power switch off and unplug the power cord. Set the voltmeter for  Disconnect the control wire at the top and bottom. Using the metal pads on the control wire connector check each wire at the top and bottom.
  • Page 18 S1Ti E2 Error Overview This error is predominantly seen in calibration mode when the treadmill is determining speed values based on information from the speed sensor. In normal mode, the treadmill can run on saved values for speed control. Step 1.
  • Page 19 If sensor is turned away or at wrong angle, loosen screw and pivot sensor to correct angle. If sensor is too far from magnet, cut hot glue and adjust sensor closer to magnet. Reglue if needed. Perform calibration as per S1Ti calibration procedure. E2 in calibration, go to Step 3...
  • Page 20 S1Ti E2 Error Step 3. Check resistance on control wire up and lower Turn the power switch off and unplug the power cord. Set the voltmeter for Ω Disconnect the control wire at the top and bottom. Using the metal pads on the control wire connector check each wire at the top and bottom.
  • Page 21 S1Ti E3 Error Overview E3 is a current over limit error. This error can be caused by excessive friction in the belt and desk or a DC motor problem. Step 1. When Step 2. Check Replace DC Shortly after start...
  • Page 22 S1Ti E3 Error Step 1: Visually check when the I limit light comes on The I limit light is located on the controller as shown. Remove the motor cover and note when the I limit light starts to light. Does it come on at higher speeds with no load?
  • Page 23 S1Ti E3 Error Step 3: Perform Amp draw Set voltmeter to Amp AC Clamp voltmeter around either black or white power wire. Set speed at 2.5, check amps without load and while walking on the belt. Values should be: without load – 1A with load –...
  • Page 24 S1Ti E4 error overview This error is a speed command error. When the computer sends the command for speed, it looks for a connection to the controller and through to the DC motor. Any break in this chain creates an E4.
  • Page 25 S1Ti E4 Error Step 1: Check resistance on control wire up and lower Turn the power switch off and unplug the power cord. Set the voltmeter for  Disconnect the control wire at the top and bottom. Using the metal pads on the control wire connector check each wire at the top and bottom especially the yellow wire on pin 1.
  • Page 26 Step 3: Check resistance through DC motor wires With power cord still disconnected, disconnect the DC motor wires checked above from controller. Set voltmeter to Ω. Place 1 lead in each wire. The resistance should be around 2 Ω. Resistance is around 10-15 Ω Resistance is around 2 Ω...
  • Page 27 S1Ti E6 Error Overview This error is related to the incline system. It is a general purpose error that can be caused by loss of communication to the incline motor, lack of movement, or out of position. Step 1. Does Step 2.
  • Page 28 S1Ti E6 Error Step 1: Check for incline movement up before E6 Verify that the treadmill is not at top incline. If in cline is already at highest incline, go to step 6. Turn the unit on. Press Observe whether the incline goes up uncommanded then the E6 is appears.
  • Page 29 S1Ti E6 Error Step 3: Check connection of small incline wires Using small incline wires from above, disconnect small incline wires from controller. Check all controller pins are straight and mate well with incline wires. Pins bent on controller - straighten If controller connector broken –...
  • Page 30 E6, go to Step 8 Step 6 Step 6: Reset incline motor and perform S1Ti calibration Turn off unit at power switch and disconnect power cord Fold the treadmill up and carefully lay the unit over on its side.
  • Page 31 S1Ti E6 Error Step 6: Reset incline motor and perform S1Ti calibration continued Reconnect the power cord and turn the treadmill on. Press . The incline motor should drive to the zero position. If it does not move, it is already set at zero.
  • Page 32 Replace controller S1Ti E6 Error Step 9: Reset incline motor and perform S1Ti calibration If the incline motor shaft casing has jammed against the incline motor, the incline motor may be getting AC voltage to move but may be unable to overcome the jam.
  • Page 33 S1Ti E6 Error Step 9: Reset incline motor and perform S1Ti calibration continued Incline motor shaft casing Motor shaft Turn the incline motor shaft casing until 3/8” of incline motor shaft is showing. Reconnect the power cord and turn the treadmill on.
  • Page 34 S1Ti E8 Error Overview E8 is a software error. The computer has failed a self-diagnostic test. Try to clear EEP and if no help, replace the computer. Step 1. Go to S1Ti Test Mode procedure to CLR EEP Replace computer...
  • Page 35 S1Ti Repair and Replacement Procedures Controller ………………………………………………….pg 35 DC Motor ………………………………………………….pg 38 Belt 230J8…………………………………………………pg. 43 Incline motor………………………………………………pg. 47 Front roller…………………………………………………pg. 51 Rear roller………………………………………………….pg 56 Running belt/running board……………………………..pg. 57 Computer/ Keyboard 20 key……………………………pg. 63...
  • Page 36 S1Ti Controller Replacement Procedure Tools required: #2 Philips screwdriver, heat sink compound- Dow Corning 340 recommended Step 1. Turn off unit at power switch and disconnect power cord. Step 2. Remove motor cover by taking out 5 screws with phillips screwdriver then lift off motor cover Step 3.
  • Page 37 S1Ti Controller Replacement Procedure Step 5. Apply heat sink compound to the base of the new controller as shown. Step 6. Set the new controller into place and connect all the wires according to Figure 1. Figure 1 Controller wire connections...
  • Page 38 Step 9. Reconnect power cord and turn on at power switch Step 10. Calibrate speed and incline as shown in S1Ti Calibration Procedure. Step 11. If you experience the belt slowing under load too much or having a surging feel, adjust the current compensation as...
  • Page 39 S1Ti DC Motor Replacement Procedure Tools required: #2 Philips screwdriver, ratchet with 8mm allen socket and extension, 6mm allen socket Tech Tip If the belt 230J8 tension is good, you can use the current DC motor bracket setting as a guide to install the replacement DC motor. Scratch a...
  • Page 40 S1Ti DC Motor Replacement Procedure Step 4. Make sure the light is off on the controller before disconnecting M+ and M- wires from the controller. See figure 1. Figure 1 Controller light and wire connections controller light M+ (red) from...
  • Page 41 S1Ti DC Motor Replacement Procedure Step 7. Remove the motor bracket from the DC Motor and transfer it to the new DC motor using a 6mm allen socket. Step 8. Remove the choke from the DC Motor wires and transfer it to the new DC motor wires by wrapping as shown.
  • Page 42 S1Ti DC Motor Replacement Procedure Step 11. Tension the belt 230J8 by tightening the hex screw that pulls the motor bracket forward. Set the tension until you can only push down 1/8” in the center of the belt with two fingers as shown.
  • Page 43 Step 16. Reconnect power cord and turn on at power switch Step 17. Calibrate speed and incline as shown in S1Ti Calibration Procedure. Step 18. If you experience the belt slowing under load too much or having a surging feel, adjust the current compensation as...
  • Page 44 S1Ti Belt 230J8 Replacement Procedure Tools required: #2 Phillips screwdriver, ratchet with 8mm allen socket and extension, 6mm allen wrench, 12 mm wrench Tech Tip If the belt 230J8 tension is good, you can use the current DC motor bracket setting as a guide to install the replacement belt 230J8. Scratch a line on the motor pan where the motor bracket sits and set the DC motor bracket back to that spot before testing belt 230J8 tension.
  • Page 45 S1Ti Belt 230J8 Replacement Procedure Step 4. Push the motor toward the running belt and slide the belt 230J8 off the DC motor pulley Step 5. Reduce the tension on the running belt by turning counterclockwise the rear roller bolts using a 6 mm allen.
  • Page 46 S1Ti Belt 230J8 Replacement Procedure Step 9. Align the belt by measuring from the frame at the front roller and the DC motor pulley. Step 10. Tension the belt 230J8 by tightening the hex screw that Hex screw pulls the motor bracket forward.
  • Page 47 S1Ti Belt 230J8 Replacement Procedure Step 13. Check the alignment of the running belt and adjust as needed by tightening or loosening the front roller bolt. When set, tighten front roller bolt jam nut Step 14. Replace motor cover and 5 screws using a Phillips...
  • Page 48 S1Ti Incline Motor Replacement Procedure Tools required: Phillips screwdriver, 8 mm socket/ratchet, 17 mm wrench, needle nose pliers Step 1. Turn off unit at power switch and disconnect power cord. Step 2. Remove the motor cover by taking out the 5 screws.
  • Page 49 S1Ti Incline Motor Replacement Procedure Step 4 Fold the treadmill up and carefully lay the unit over on its side. Step 5 Remove the bolt and nut from the top of the incline motor using an 8 mm allen and 17 mm wrench.
  • Page 50 S1Ti Incline Motor Replacement Procedure Step 10. Turn off unit at power switch and disconnect power cord. Incline motor shaft casing Motor shaft Step 11. Turn the incline motor shaft casing until 3/8” of incline motor shaft is showing. Step 12. Set the new incline motor...
  • Page 51 Step 15 Reconnect the power and turn the unit on. Calibrate the treadmill as per the S1Ti Calibration Procedure. Step 16 Check that the unit is at zero by measuring at the front of the unit. The main frame should be approx, 4 ½...
  • Page 52 S1Ti Front Roller Replacement Procedure Tools required: #2 Philips screwdriver, ratchet with 8mm allen socket and extension, 6mm allen wrench, 12mm wrench Tech Tip If the belt 230J8 tension is good, you can use the current DC motor bracket setting as a guide to install the replacement belt 230J8. Scratch a line on the motor pan where the motor bracket sits and set the DC motor bracket back to that spot before testing belt 230J8 tension.
  • Page 53 S1Ti Front Roller Replacement Procedure Step 4. Push the motor toward the running belt and slide the belt 230J8 off the DC motor pulley Step 5. Reduce the tension on the running belt by turning counterclockwise the rear roller bolts using a 6 mm allen.
  • Page 54 S1Ti Front Roller Replacement Procedure Step 9. Align the belt by measuring from the frame at the front roller and the DC motor pulley. Step 10. Tension the belt 230J8 by tightening the hex screw that Hex screw pulls the motor bracket forward.
  • Page 55 S1Ti Front Roller Replacement Procedure Step 13. Check the alignment of the running belt and adjust as needed by tightening or loosening the front roller bolt. When set, tighten front roller bolt jam nut using the 12mm wrench Step 14. Replace motor cover and 5 screws using Phillips screwdriver.
  • Page 56 S1Ti Rear Roller Replacement Procedure Tools required: Phillips screwdriver, 6 mm socket/ratchet Step 1. Turn off unit at power switch and disconnect power cord. Step 2. Tilt the base of the treadmill up. Step 3. Remove the 3 screws in each of the rear decorative...
  • Page 57 S1Ti Rear Roller Replacement Procedure Step 6. Slide in the new rear roller and replace the roller bolts Step 7. Set the pedals on the deck and replace the screws from the underside Step 8. Replace the rear decorative covers right and left using a Philips screwdriver to reinstall the screws.
  • Page 58 S1Ti Running Belt/Running Board Replacement Procedure Tools required: Phillips screwdriver, ratchet with 8mm allen socket and extension, 6mm allen socket, 12mm wrench Step 1. Turn off unit at power switch and disconnect power cord. Step 2. Tilt the base of the treadmill up.
  • Page 59 S1Ti Running Belt/Running Board Replacement Procedure Step 6. Tilt the base of the treadmill down. Step 7. Remove motor cover by taking out 5 screws with Philips screwdriver and lifting off motor cover Step 8. Reduce the belt 230J8 Motor bracket...
  • Page 60 S1Ti Running Belt/Running Board Replacement Procedure Step 11. Remove the running belt and running board by taking out the deck hex screws with a 5mm socket and 13mm wrench and lifting out the running belt and running board. Step 12. Transfer running...
  • Page 61 S1Ti Running Belt/Running Board Replacement Procedure Step 16. Align the belt by measuring from the frame at the front roller and the DC motor pulley. Step 17. Tension the belt 230J8 by tightening the hex screw that Hex screw pulls the motor bracket forward.
  • Page 62 S1Ti Running Belt/Running Board Replacement Procedure Step 21. Set the pedals on the deck and replace the screws from the underside Step 22. Replace the rear decorative covers right and left using a Philips screwdriver to reinstall the screws. Step 23. Tilt the base of the treadmill down.
  • Page 63 S1Ti Running Belt/ Running Board Replacement Procedure Step 25. Check the alignment of the running belt and adjust as needed by tightening or loosening the front roller bolt. When set, tighten front roller bolt jam nut using the 12mm wrench Step 26.
  • Page 64 S1Ti Computer/ Keyboard 20 Key Replacement Procedure Step 1. Turn off unit at power switch and disconnect power cord. Step 2. Remove 11 screws from back of computer panel using a Phillips screwdriver and tilt forward the computer panel Step 3. Disconnect wires from computer or keyboard 20 key.
  • Page 65 S1Ti Computer/ Keyboard 20 Key Replacement Procedure Figure 1 Computer/ Keyboard 20 key wire connections Wireless charging heart beat Empty Empty board board Control wire up Hand pulse Safety board switch Handle switch- board elevation Handle switch- Keyboard 20 speed...
  • Page 66 Step 7. Reconnect power cord and turn on unit at power switch. Step 8. Calibrate speed and incline as shown in S1Ti Calibration Procedure. Step 9. If you experience the belt slowing under load too much or having a surging feel, adjust the current compensation as shown in the S1Ti Current Compensation Procedure Step 10.

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T300iT500i

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