Viribus Panther Electric Bike Troubleshooting #1

CBE-R1AB_F2AB Troubleshooting Guide

1. Battery Not Working

1.1. Check if the rocker switch on the battery is in the “ON” position.

If not, switch it to “ON.”

If it is, press and hold the power display button on the battery to check the indicator light status:

If only one red light is on or no lights are illuminated, the battery may be depleted. Charge it for 4–6 hours before use.

2. The display is not working

2.1. Verify that the battery power switch is turned to “ON.”

2.2. Press the battery power button and observe the indicator lights:

If all lights are on:

Check if the wiring harness between the controller and the Display is securely connected.

If yes, the Display or controller may be faulty. Replace both.

If no, reconnect the wiring harness properly.

Long-press the power button on the Display to test it.

If no lights are on:

The battery may be out of power. Charge it fully before use.

3. Display Turns on, but the Motor Doesn’t Work

3.1. Check the display for error codes:

If an error code is present: Refer to Section 7 for details and resolution.

If no error code appears:

Ensure the display parameter P10 is set to “2.” Adjust it if necessary.

Verify that the wiring harness connecting the controller to the motor is secure.

Test the motor in power-assist mode:

If it works, replace the throttle handle.

If it doesn’t, the controller or motor may be faulty. Replace the controller first.

4. Brakes Not Working

4.1. Confirm that the brake line is properly connected to the brake handle.

4.2. If the brakes feel too loose, adjust the brake line tension.

5. Battery Cannot Be Charged or Fully Charged

5.1. After connecting the charger to a power source, observe the charger indicator light (assuming the battery has been charging for at least 45 minutes):

If the charger shows green before connecting to the battery and red after connecting, the battery may not be holding a charge. Replace the battery.

If the charger shows red even without a battery connected, the charger may be defective. Replace the charger.

If the charger remains green regardless of battery connection, the battery fuse may be blown, or the battery could be in low-battery protection mode:

With the charger connected, press and hold the battery charge indicator button:

If only one red light is on, the battery is in low-battery protection mode. Use a zero-volt charger to recharge it.

If all indicator lights are on, the fuse is likely blown. Replace the fuse.

6. Unit Does Not Work - What is a unit?

6.1. Check if the display is on:

If the display is not lit:

Ensure the battery power switch is in the “ON” position.

Press the battery power button and observe the indicator lights:

If all lights are on:

Check the wiring harness between the controller and the display:

If secure, replace the display and controller.

If loose, reconnect it properly.

Long-press the power button on the display.

If no lights are on: Charge the battery fully before use.

If the display is lit:

Check for error codes on the display:

If present, refer to Section 7.

If absent:

Ensure parameter P10 is set to “2.” Adjust if needed.

Verify the wiring harness between the controller and motor is secure.

Test the motor in power-assist mode:

If it works, replace the throttle handle.

If it doesn’t, replace the controller first.

7. Common Fault Codes

7.1. E5: Hall Fault

Check if the motor wire is damaged or if the wiring harness plug between the motor and controller is secure. If normal, replace the controller.

7.2. E4: Battery Overcurrent

Inspect the fuse. If intact, replace the controller.

7.3. E9: Motor Overheating

Power off the unit and let the motor cool to room temperature. Restart to test. If the error persists, replace the motor wheel.

7.4. E3: Undervoltage Fault

Battery voltage is too low. Charge the battery promptly.

7.5. E2: Overvoltage Fault

Measure the battery output voltage. If it exceeds 52V, replace the battery. If below 52V, replace the controller.

7.6. E7: Motor Phase Missing

Ensure the wiring harness between the motor and controller is connected properly. If secure, replace the motor wheel.

7.7. E6: Motor Locked

Power off and restart the unit. If the motor still doesn’t work, replace the motor wheel.

7.8. E1: Throttle Failure

Replace the display (throttle and display are integrated in this product).

7.9. E8: Brake Failure

Check if the brake handle buckle is reset. If normal, replace the brake handles.

7.10. E0: Communication Failure

Inspect the wiring harness between the controller and display screen for proper connection, broken pins, or misalignment. If normal, replace both the controller and display screen.

No results found, please browse the next Panther Blog!