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Troubleshooting Internal Hub Kits

Throttle is Not Working / General Troubleshoot:

Follow these troubleshooting steps:

  1. Are all the lights on the throttle on? Do they stay on when you try to use the throttle? if you answered yes to both questions then proceed to step 2. if you answered no to either question then check the voltage on your battery using a multimeter. The voltage should be slightly above or below the expected nominal voltage (24V, 36V, 48V).
  2. Turn off the battery, unplug the brake levers, control buttons, and display or bluetooth dongle. The only thing that should remain connected is the throttle. Now turn the battery back on. If the throttle works, turn off the battery and then plug each disconnected item in one at a time, power up again and try the throttle to determine which one is causing the issue. If the throttle stops working when you plug in a brake lever, it may be slightly engaged, make sure the brake snaps fully back into place. If the throttle still doesn’t work, proceed to step 3.
  3. Only for the Vector internal controllers (MP5, SP5, Edge): Remove the wheel from the bike. Leave the controller plugged into the motor but unscrew it, pull it out and flip it over, leaving it hanging. There is a red light (LED) on the inside of the controller that blinks once when you turn on the battery. If it doesn’t blink, the controller is dead and needs to be replaced. If it blinks more than once, there is an error. Count the number of repeating consecutive blinks and match it to the error codes at the bottom of this article. Note: Some controllers are filled with grey epoxy instead of clear epoxy, so you won’t be able to see the red LED or any error codes. However, you should still be able to hear a “click” sound from the controller when the battery is turned on; if you don’t hear this, the controller is most likely dead.

If you have determined the issue and require a warranty replacement or are still unsure what the issue is, please open a support ticket.

Motor is Stuttering / Jerking / Making Noise:

If the motor is cutting out, stuttering, jerking, or making noise but not moving, there could be a few possible causes:

  1. The battery can’t supply enough continuous current so the motor could be cutting out. Usually, this happens when the battery is purchased from a cheap store instead of Golden Motor. If the motor works perfectly fine at low throttle but cuts out at higher throttle, this is probably the issue. The simplest solution would be to program the controller to pull less current from the battery. This can be done by decreasing the “Battery Current (A)” incrementally until the issue is solved. The more expensive solution that would allow your motor to run at full power without issues would be to purchase a better quality battery with a higher continuous current rating.
  2. Phase or hall wires are not connected properly. Make sure your wiring is correct. Check if any of the pins/wires are pushed out of the black 6-pin plug on the controller.
  3. A faulty connection or component in the controller (more likely).
  4. A faulty connection or component in the motor (less likely).

Also, check the troubleshooting steps above, and count the number of blinks on the controller. This could give you more information on what the issue might be.

If you have determined that the issue is with the controller or the motor, contact our support team with your test results.

If you are unable to determine the issue, record a video of the motor behaviour and send it to to open a support ticket.

Motor is Working but Making Noise:

There are different noises that could be coming from the motor/wheel. Take a look at some of the common noises below, as well as some of the causes. If you still aren’t sure what the cause of your motor noise is, send a video of the noise to to open a support ticket.

Clanking or rattling in the rim:

Most likely, one of the spoke nuts got loose and fell into the rim. You will have to remove the tire, rotate, and shake the rim to get it to fall out. Make sure you replace the missing spoke; take a look at this article for help with that.

Knocking noise once per revolution:

If your motor is making a knocking noise once per revolution, something may be catching internally or externally. Rotate the wheel slowly by hand to determine where exactly the noise is coming from. Check the disk brake screws, spokes, freewheel, etc. to find the culprit. If there is nothing catching externally, there may be some contact internally that needs to be rectified. Contact the support team if this is the case.

Constant grinding noise increasing with RPM:

This noise may be the disk brake screws grinding against the motor casing. If this is the case, you will need spacers on the screws to increase clearance from the motor casing. Another cause may be noisy bearings. There are two bearings inside the motor that can be replaced. Open a support ticket to ask for details about purchase and installation.

Error Codes:

The flashing light can be found on the underside of the Vector controller, once it is unscrewed but still wired to the motor.

A single flash on startup is normal and indicates there are no errors. If there is a repeating flashing light, the number of consecutive flashes is the error code number.

1 repeating flash indicates Over voltage protection
2 repeating flashes indicate Under voltage protection
3 repeating flashes indicate Over current (Motor phase is short-circuited or phase to ground is short-circuited)
4 repeating flashes indicate Stall Protection (motor stalled for too long)
5 repeating flashes indicate Hall sensor input is abnormal (or connector disconnected)
6 repeating flashes indicate MOSFET protection (MOSFET self-checking is abnormal)
7 repeating flashes indicate Phase wire disconnected (or faulty windings)
10 repeating flashes indicate Self-checking error protection (System internal power-on self-checking is abnormal)
11 repeating flashes indicate Controller overheating
12 repeating flashes indicate Abnormal throttle signal
13 repeating flashes indicate Motor over-heat protection (Motor temperature is higher than safe value)
14 repeating flashes indicate Throttle or control harness are disconnected or faulty

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