Viribus SC5 Fat Tire Electric Tricycle Troubleshooting

Q1 Cannot power on / display screen not lighting up.

To turn on the display screen, press and hold the power button on the instrument panel for 3-5 seconds, as shown in the figure.

If the display screen still does not light up after pressing and holding the power button on the instrument panel, check if the battery has power. Insert the key into the lock and turn it to the unlocked position to remove the battery (see the left figure below). Press the battery's power indicator button and observe the power indicator light (see the right figure below). If only one red light is on,  the battery is out of power and needs to be charged before use. If two lights are on,  the battery is normal. Check the wiring harness connection between the controller and the instrument panel for any abnormalities. If the wiring harness connection is normal, replace the instrument panel.

Q2 Unable to switch to the minimum or maximum gear position.

If you are unable to switch to the maximum gear position, use a Phillips screwdriver to rotate the screw on the right side of the derailleur ( H ) until the small cog on the derailleur aligns with the smallest gear on the flywheel. If you cannot switch to the minimum gear position, use a Phillips screwdriver to rotate the screw on the left side of the derailleur ( L ) until the small gear on the derailleur aligns with the largest cog on the flywheel.

Q3 How to shift gears in manual riding mode?

While riding the bicycle, press the button indicated by the red arrow on the shifter lever on the right handlebar. Each press will shift up one gear. To shift down, push the lever indicated by the green arrow in the figure below. Pushing it continuously will shift down the gear from the current position to the first.

Q4 The brakes are too loose and not effective.

While squeezing the brake lever, observe if the brake cable at the brake caliper contracts. If the brake cable does not contract, check if the brake lever clamp is installed correctly (as shown in the figure). If squeezing the brake lever causes the brake cable to contract, it may be that the brakes are too loose. In this case, you need to tighten the brake cable slightly. You can refer to the following video for guidance: Brake Line Adjustment

Q5 The handlebar is too low, how do I adjust the height?

To adjust the height of the handlebar, first, loosen the fixing screws that connect the handlebar stem to the front fork (see the left figure below), then loosen the screws that secure the handlebar to the handlebar stem (see the right figure below). You can now move the handlebar upwards or downwards.

Q6 The battery indicator shows full charge, but the instrument panel shows no power.

 Check if the voltage parameter on the instrument panel is set to 48 volts. If not, adjust the parameter to 48 volts. You can refer to the following video for guidance: Voltage Parameter Adjustment

Q7 The display screen shows error code 08 or 09, causing the motor not to start.

You need to check if the wiring harness plug between the motor and the controller is securely connected. Make sure the arrows on the two harnesses align completely as shown in the figure below. If the wiring harness connection is normal, you may need to replace the controller.

Q8 How to check error code 30 on the display screen.

Error code 30 indicates a communication fault. Check if there is any loose connection or misaligned pins in the wiring harness plug between the instrument panel and the controller. If the wiring harness connection is fine, then you may need to replace the controller to resolve the issue.