Welkin WKES001, User Manual, Page: 20 / 24

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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
pedaling
1. Faulty crank sensor.
2. Faulty throttle.
3. Faulty controller.
1. Replace.
2. Replace.
3. Replace.
Throttle (if equipped) not
returning to neutral position
1. Grip jamming against
throttle.
2. Faulty throttle.
1. Reposition grip so gap to
throttle is 1 to 2mm.
2. Replace.
Pedal assistance operating
intermittently or not as
expected
1. Loose connectors / wiring
damage.
2. Faulty controller.
3. Faulty crank sensor.
4. Faulty throttle.
1. Check connectors / wiring.
Replace as
required.
2. Replace.
3. Replace.
4. 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.