X‑Class 60V: Error 14 & 15: Controller and motor over-temperature troubleshooting guideUpdated 14 days ago

What are Errors 14 & 15?

Error 14 indicates a motor over-temperature sensor anomaly, while Error 15 indicates a controller over-temperature anomaly on your e-bike. These safety features activate when the bike's motor or controller becomes too hot and needs to cool down to prevent permanent damage.

Common Causes

These errors typically occur due to demanding riding conditions that cause the controller or motor to work harder and generate excess heat:

High-Demand Riding Scenarios

• Extended high-speed riding: Operating at full speed for prolonged periods
• Steep hill climbing: Going uphill for extended periods, especially using only throttle power
• Low speeds over longer distances: Riding at very low speeds under heavy load for long durations (forces the motor to work inefficiently)
• Overloading: Exceeding the bike's maximum payload capacity

Immediate Resolution Steps

Step 1: Allow Cool-Down Period

1. Stop riding immediately when the error appears.
2. Power off the bike completely.
3. Park the bike in a shaded, well-ventilated area.
4. Allow the bike to cool for 2–3 hours before attempting to ride again.
5. Power on the bike and check if the error has cleared.

Step 2: Test After Cool-Down

Once the cooling period is complete:

1. Turn the bike back on.
2. Check if the error still appears on the display.
3. If cleared, the bike should operate normally.
4. Start with gentle riding using pedal assist to avoid immediate re-overheating.

Prevention Strategies

Riding Techniques

• Vary your speed: Avoid sustained high-speed operation.
• Use pedal assist: Remember that this is a bicycle and should be pedaled, especially when climbing hills.
• Take breaks: Allow rest periods during long or demanding rides.
• Monitor payload: Stay within the bike's weight capacity limits.

Environmental Considerations

• Avoid extreme heat: Park your bike in the shade whenever possible.
• Plan routes: Choose routes with varied terrain to avoid prolonged high-demand situations.

When to Contact Support

Contact our technical support team if:

• The error persists after the recommended cooling period
• The error occurs frequently during normal riding conditions
• The error appears immediately upon starting the bike (even when cool)

Understanding Your Bike's Limits

Normal Operating Parameters

• Payload capacity: Check your bike's specifications for maximum weight limits.
• Continuous operation: Most e-bikes are designed for varied riding, not sustained maximum-power output.
• Temperature range: Motors and controllers have optimal operating temperature ranges.

Signs of Over-Demand

Watch for these warning signs before an over-temperature error occurs:

• Reduced motor power output
• Shorter battery range than expected

Need Additional Help?

If the error continues to occur after following these troubleshooting steps, please contact our technical support team through our contact form for personalized assistance.