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7. Troubleshooting
Troubleshooting
Detection Item
Possible Causes Countermeasures
Power cable of battery is
not connected.
Reconnect the power cable and then switch
on.
Battery inner cable loose
Reconnect the inner cable and then switch
on.
Main switch coupler
loose
If the coupler is loose, reconnect it. If the
coupler is ok, there might be open circuit in
the wire harness. Please contact your SYM
dealer.
Main switch malfunction
Replace the main switch
1.
Meter doesn’t work
and indicator doesn’t
illuminate.
Low battery voltage
1 Recharge the battery. Check if the battery
voltage is 52V.
2. Replace the battery when the voltage is
under 30V after recharging.
2.
Malfunction of light
system
DC / DC
Converter malfunction
1. Replace DC/DC Converter.
2. Replace fuses (5A / 15A).
3.Contact your SYM dealer.
Faulty main switch
Replace the main switch
Motor wire loose Reinstall
Ineffective motor
position feedback signal
Motor malfunction
Motor controller
overheated
3.
Rear wheel does not
rotate when the
electric throttle is
rotated.
Motor controller
malfunction
Contact your SYM dealer
Charger coupler is not
plugged properly.
Re-plug coupler.
4.
Unable to charge
the battery
(orange light
means charging)
Charger malfunction
Replace the charger.
Front / rear brake too
tight
Adjust front / rear brake.
Long time without
charging
Recharge after riding or when the vehicle is
not in use for a long time.
Low temperature
Battery quantity will decrease when the
temperature is low.
Low tire pressure
Check the tire pressure periodically (every
month) and inflate the tire to the
recommended pressure.
5.
Riding mileage is too
short.
Aged battery Replace the battery
26


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