How to Troubleshoot Common Velzi Electric Cycle Issues at Home
Your Velzi electric cycle is designed to be reliable, easy to use, and safe for everyday commuting. However, like any electric vehicle, you may occasionally experience minor issues during daily use. The good news is that most common problems can be identified and resolved at home with simple checks.
Velzi uses the digital display to show system status and error warnings. This guide explains:
Common issues riders face
Display error codes and what they mean
Safe steps you can take at home
When to contact Doddle support
⚠️ This guide does not require or recommend changing any advanced settings or parameters
Electric Cycle Not Turning On
Step 1: Check the Battery
Ensure the battery has sufficient charge by pressing the button next to LED indicators on the battery.
Confirm the battery is properly locked into the battery track.
Press the battery’s indicator button to check charge level.
A loosely locked battery is one of the most common reasons the cycle does not power on.
Step 2: Check the Display
Press and hold the power button for 2–3 seconds.
Ensure the display connector is firmly connected.
Avoid unplugging or reconnecting the display while the bike is powered on.
Step 3: Check for Moisture or Loose Wiring
Inspect visible wiring near the display and controller.
If the cycle was used in rain, dry it completely and wait before charging.
If the display still does not turn on, contact Doddle support.
Understanding Display Error Codes
When an issue is detected, the display shows an error code (E-code). Below are common error codes you may see and safe actions you can take.
E02 – Brake Error
What it means: A brake lever or brake sensor is engaged.
What to do: Release both brake levers fully. Press and release the brake levers a few times. Ensure brake levers return freely.
E03 – PAS Sensor Error
What it means: The pedal assist signal is not being detected.
What to do: Check the PAS sensor near the crank for dust or misalignment. Ensure PAS wiring is secure.
E06 – Low Battery / Low Voltage Warning
What it means: Battery charge is low.
What to do: Recharge the battery fully. Avoid riding further to prevent automatic power cut-off.
E07 – Motor Error
What it means: Motor signal or connection issue.
What to do: Stop riding immediately. Check visible motor cable connections. Contact Doddle service if the error persists.
E08 – Throttle Error
What it means: Throttle signal issue.
What to do: Ensure throttle is not stuck or damaged. Check throttle wiring visually. Restart the cycle.
E09 – Controller Error
What it means: Controller communication issue.
What to do: Switch off the cycle. Restart after a few seconds. Contact Doddle service if repeated.
E10 – Communication Error
What it means: The display and controller are not communicating properly.
What to do: Turn the cycle off. Check display cable connection. Restart the cycle.
E12 – BMS Communication Error
What it means: Battery Management System (BMS) is not responding.
What to do: Remove and reinsert the battery. Recharge the battery. Contact Doddle service if the error continues.
E13 – Front Light Error
What it means: Front light circuit or connection issue.
What to do: Turn the front light off and on. Check visible wiring. Contact support if unresolved.
Sudden Power Cut While Riding
Common reasons include:
Low battery charge
Loose battery connection
Brake sensor staying engaged
Overheating protection activating
What to do:
Stop safely
Switch off the cycle
Check battery lock and brake levers
Restart after a short break
Reduced Speed or Weak Assistance
If the cycle feels slower than usual:
Check battery level
Reduce load
Allow the cycle to cool down
Use a lower assist level and pedal
This is normal protective behaviour and does not indicate a fault.
Throttle or PAS Not Working Properly
Throttle Not Responding
Check battery level
Ensure throttle is fully released before turning the cycle on
Check throttle wiring visually
PAS Not Working
Check PAS sensor alignment near the crank
Restart the system
Cycle Moves Slightly When Powering On
This can happen if the throttle is not fully released.
What to do:
Ensure throttle is fully released
Restart the cycle
Display Not Responding or Frozen
If the display is on but buttons do not respond:
What to do:
Switch off the cycle
Wait 10–15 seconds
Restart
Headlight or Horn Not Working Temporarily
This may occur due to moisture or loose connections.
What to do:
Switch off and restart the cycle
Allow the cycle to dry completely
Check visible wiring
Contact support if the issue persists.
Unusual Motor Noise or Vibration
Check:
Rear wheel alignment
Brake caliper clearance
Tyre pressure (maintain 18–20 PSI)
If abnormal noise continues, avoid riding and contact a service expert.
Brake Noise During Riding
Mild brake noise is normal, especially with new brake pads.
Noise usually reduces after a short break-in period.
Persistent noise may require brake adjustment.
Battery Draining Faster Than Normal
Possible reasons:
Low tyre pressure
Heavy load or hilly terrain
Frequent throttle use
Battery ageing
What to do:
Try mixing pedal assist with smooth riding for better efficiency.
Charger Indicator Light Confusion
Red light: Charging in progress
Green light: Charging complete
If the light does not change after several hours, contact support.
⚠️ Important Safety Note (VERY IMPORTANT)
Do NOT:
Change display settings or P-modes
Adjust speed limits, PAS sensitivity, or system voltage
Enter advanced menus
Incorrect settings can affect performance, safety, and warranty.
If you see repeated errors, contact Doddle support instead of changing settings.
When to Visit a Doddle Service Centre
Contact a service expert if you notice:
Repeated error codes
Battery not charging or overheating
Motor vibration or abnormal noise
Burnt smell or damaged wiring
Cycle shutting off frequently during rides
These require professional inspection.
Final Thoughts
Most Velzi electric cycle issues are minor and can be resolved with simple checks at home. Understanding display warnings and error codes helps you ride confidently and avoid unnecessary downtime.
And whenever you need expert help, the Doddle service team is always ready to support you.
