Qualisports Dolphin, User Manual, Page: 26 / 32

Troubleshooting
Basic troubleshooting
Symptoms Possible Causes Most Common Solutions
The bike does not work
1. Insufficient battery power
2. Faulty connections
3. Battery not fully seated in tray 4. Improper
turn on sequence
5. Brakes are applied
6. Blown 40a discharge fuse
1. Charge the battery
2. Clean and repair connectors
3. Install battery correctly
4. Turn on bike with proper sequence 5.
Disengage brakes
6. Replace 40a discharge fuse
Irregular acceleration and/or reduced top
speed
1. Insufficient battery power
2. Loose or damaged throttle
3. Misaligned or damaged magnet ring
1. Charge or replace battery
2. Replace throttle
3. Align or replace magnet ring
The motor does not respond when the bike is
powered on
1. Loose wiring
2. Loose or damaged throttle
3. Loose or damaged motor plug wire
4. Damaged motor
1. Repair and or reconnect 2. Tighten or
replace
3. Secure or replace
4. Repair or replace
Reduced range
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, damaged, or
unbalanced
5. Brakes rubbing
1. Adjust tire pressure
2. Check connections or charge battery
3. Assist with pedals or adjust route
4. Balance the battery; contact Tech Support
if range decline persists
5. Adjust the brakes
The battery will not charge
1. Charger not well connected 2. Charger
damaged
3. Battery damaged
4. Wiring damaged
5. Blown charge fuse
1. Adjust the connections 2. Replace
3. Replace
4. Repair or replace
5. Replace charge fuse
Wheel or motor makes strange noises
1. Loose or damaged wheel spokes or rim
2. Loose or damaged motor wiring
1. Tighten, repair, or replace
2. Reconnect or replace motor.
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