How to Troubleshoot and Fix an Electric Bike (summary version)

  We all like our haoqi e-bikes. As a green hand, we may come across some problem that is how to troubleshoot and fix an electric bike.

  Here are some basic troubleshooting and repairing plans: REPAIR TOOL

  • Symptoms 1: It doesn’t work.

      Possible Causes:

  1. Insufficient battery power
  2. Faulty connections
  3. Haoqi Battery not fully seated in tray
  4. Improper turn on sequence
  5. Brakes are applied

     Most Common Solutions

  1. Charge the battery pack
  2. Clean and repair connectors
  3. Install battery correctly
  4. Turn on bike with proper sequence
  5. Disengage brakes

    •   Symptom2: Irregular acceleration or reduced top speed

        Possible Causes:

    1. Insufficient battery power
    2. Loose or damaged throttle

        Most Common Solutions

    1. Charge or replace battery
    2. Replace throttle

      • Symptoms 3: When powered on the motor does not respond

          Possible Causes:

      1. Loose wiring
      2. Loose or damaged throttle
      3. Loose or damaged motor plug wire
      4. Damaged motor

         Most Common Solutions

      1. Repair and or reconnect
      2. Tighten or replace
      3. Secure or replace
      4. Repair or replace

        • Symptoms 4: Reduced range

           Possible Causes:

        1. Low tire pressure
        2. Low or faulty battery
        3. Driving with too many hills, headwind, braking, and/or excessive load
        4. Battery discharged for long period of time without regular charges, aged or damaged
        5. Brakes rubbing

           Most Common Solutions

        1. Adjust tire pressure
        2. Check connections or charge battery
        3. Assist with pedals or adjust route
        4. Replace the battery (CONTROLLER, BATTERY CHARGE)


            • Symptoms 5: The battery won't charge

               Possible Causes:

            1. Charger not well connected
            2. Charger damaged
            3. Battery damaged
            4. Wiring damaged

              Most Common Solutions

            1. Adjust the connections
            2. Replace
            3. Replace
            4. Repair or replace

              • Symptoms 6: Wheel or motor makes strange noises

                Possible Causes:

              1. Damaged motor bearings
              2. Damaged wheel spokes or rim
              3. Damaged motor wiring

                Most Common Solutions

              1. Replace
              2. Repair or replace
              3. Repair or replace motor

               The detailed can be seen on Haoqi E-bike Owner's Manual.


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