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Troubleshooting
Detection Item
Meter doesn't work
1.
and indicator doesn't
illuminate.
Malfunction of light
2.
system
Rear wheel does not
rotate
when
3.
electric
throttle
rotated.
Unable to charge
the battery
4.
(orange light
means charging)
Riding mileage is too
5.
short.
7. Troubleshooting
22
Possible Causes
Power cable of battery is
not connected.
Battery inner cable loose
Main
switch
loose
Main switch malfunction
Low battery voltage
DC / DC
Converter malfunction
Faulty main switch
Motor wire loose
Ineffective
position feedback signal
the
Motor malfunction
is
Motor
overheated
Motor
malfunction
Charger coupler is not
plugged properly.
Charger malfunction
Front / rear brake too
tight
Long
time
charging
Low temperature
Low tire pressure
Aged battery
Reconnect the power cable and then switch
on.
Reconnect the inner cable and then switch
on.
If the coupler is loose, reconnect it. If the
coupler
coupler is ok, there might be open circuit in
the wire harness. Please contact your SYM
dealer.
Replace the main switch
1 Recharge the battery. Check if the battery
voltage is 52V.
2. Replace the battery when the voltage is
under 30V after recharging.
1. Replace DC/DC Converter.
2. Replace fuses (5A / 15A).
3.Contact your SYM dealer.
Replace the main switch
Reinstall
motor
Contact your SYM dealer
controller
controller
Re-plug coupler.
Replace the charger.
Adjust front / rear brake.
without
Recharge after riding or when the vehicle is
not in use for a long time.
Battery quantity will decrease when the
temperature is low.
Check the tire pressure periodically (every
month) and inflate the tire to the
recommended pressure.
Replace the battery
Countermeasures
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