Malfunction |
Possible Cause |
Possible Solution |
Pedal assistance not working |
1. Under-charged battery. 2. Battery no longer serviceable. 3. Battery charger faulty. 4. Motor electrics or switches damaged / faulty. |
1. Charge battery. Follow battery care procedures. 2. Have battery checked. Replace if faulty. 3. Have charger checked. Replace if faulty. 4. Seek diagnosis and repair from authorised service centre. |
Reduced range and/or speed |
1. Under-charged battery. 2. Battery no longer serviceable. 3. Low tyre pressure. 4. Brakes dragging. 5. Terrain, headwind, etc. |
1. Charge battery. Follow battery care procedures. 2. Have battery checked. Replace if faulty. 3. Inflate to recommended pressure. 4. Adjust. 5. Normal. |
Gear change (where applicable) rough / not changing |
1. Derailleur cables sticking / stretched / damaged. 2. Derailleurs / shifter not correctly set. |
1. Lubricate / adjust / replace cables. 2. Adjust. |
Chain slip / jumping off sprockets |
1. Worn sprockets. 2. Stretched chain. 3. Front sprocket loose / out of true. 4. Sprocket teeth bent / broken. 5. Derailleur / shifter not correctly adjusted. |
1. Replace. 2. Replace. 3. Re-true / tighten. 4. Replace. 5. Adjust. |
Clicking noises when pedaling |
1. Stiff chain link. 2. Loose pedals / bearings. 3. Loose bottom bracket / bearings. 4. Bent bottom bracket or pedal bolt. 5. Loose pedal arm bolts. |
1. Lubricate chain. 2. Tighten / adjust bearings. 3. Tighten / adjust bearings. 4. Replace. 5. Tighten. |
Grinding noise when pedaling |
1. Pedal bearings too tight. 2. Bottom bracket bearings too tight. 3. Rear wheel not straight. 4. Chain too tight. 5. Derailleur dirty. |
1. Adjust. 2. Adjust. 3. Align so chain straight. 4. Adjust. 5. Clean and lubricate. |
Brakes not effective |
1. Pads worn. 2. Pads / discs dirty. 3. Brake cables binding / stretched / damaged. 4. Brakes levers binding. 5. Brakes require adjustment. |
1. Replace. 2. Clean and degrease. 3. Lubricate / adjust / replace cables. 4. Clean pivots. 5. Adjust. |
Brakes squeal |
1. Pads / discs dirty. 2. Brakes not centred. 3. Caliper fasteners loose. |
1. Clean and degrease. 3. Tighten. |
Brakes chatter / vibrate |
1. Brake mounting bolts loose. 2. Brakes out of adjustment. 3. Steering head bearings loose. |
1. Tighten. 3. Adjust bearings. |
Wheel vibration / wobble |
1. Axle bent or broken. 2. Wheel out of true. 3. Wheel hub bearings loose / not serviceable. 4. Quick-release (if equipped) mechanism loose. |
1. Replace. 2. True wheel. 3. Adjust / replace. 4. Adjust. |
Steering not accurate |
1. Wheels not aligned to frame. 2. Steering head loose / binding. |
1. Align wheels. 2. Adjust. |
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3. Front forks or frame bent. |
3. Straighten. |
Motor "clicks" / has reduced power and/or shuts off |
1. Under-charged battery. 2. Motor internal fault. |
1. Charge battery. Follow battery care procedures. 2. Replace. |
No power when pedal assistance switched ON |
1. Blown fuse. 2. Loose connectors / wiring damage. 3. Faulty switch. 4. Faulty controller. |
1. Replace. 2. Check connectors / wiring. Replace as required. 3. Replace. 4. Replace. |
Pedal assistance OK, but no display |
1. Loose connectors / wiring damage. 2. Faulty controller. |
1. Check connectors / wiring. Replace as required. 2. Replace. |
Display OK, but no pedal assistance |
1. Loose motor connectors / wiring damage. 2. Poor contact at battery terminals. 3. Faulty braking sensor. |
1. Check connectors / wiring. Replace as required. 2. Inspect and clean terminals. 3. Replace. |
Bicycle runs at full speed without pedalling |
1. Faulty crank sensor. 2. Faulty controller. |
1. Replace. 2. Replace. |
Pedal assistance operating intermittently or not as expected |
1. Loose connectors / wiring damage. 2. Faulty controller. 3. Faulty crank sensor. |
1. Check connectors / wiring. Replace as required. 2. Replace. |
Charger shows "full charge" in an unusually short amount of time |
1. Faulty charger. 2. Faulty batteries. |
1. Replace. 2. Replace. |
Charger indicator not illuminating when charger is plugged into outlet |
1. Outlet has no power. 2. Faulty charger. |
1. Check charger plugged in and electrical supply ON. 2. Replace. |
Charger indicator flashes red and never changes to green |
1. Damaged wire from charger to battery. 2. Faulty batteries. |
1. Replace charger. 2. Replace. |
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