Troubleshooting - Sym MIO ELECTRIC Manual

Troubleshooting

Detection Item
1 Unable to charge
Long time charging
2
without green light on
Meter doesn't work and
indicator
3
illuminate.
Malfunction of
4
system
Rear wheel does not
5
rotate when the electric
throttle is rotated.
Riding mileage is too
6
short.
Possible Causes
Not using SYM
authorized battery
Low input voltage
Battery deterioration or
malfunction
Power cable of battery is
not connected.
Battery inner cable loose
Main switch
doesn't
loose
Main switch malfunction
Low battery voltage
DC / DC
light
Converter malfunction
Faulty main switch
Motor wire loose
Ineffective
position feedback signal
Motor malfunction
Motor
overheated
Motor
malfunction
Front / rear brake too
tight
Long time
charging
Low temperature
Low tire pressure
Aged battery
Using SYM authorized battery
Power input 100V~240V
Replace 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 60V.
2. Replace the battery when the voltage is
under 30V after recharging.
1. Check the appearance and harness for
abnormality
2. Check whether the positive and negative
poles of DC are short circuited (including
input and output)
3. When the whole vehicle is powered on,
check whether the measured voltage is
abnormal (i.e. measured with a multimeter,
the output voltage shall be 13.5V ± 0.5V)
4.Contact your SYM dealer.
Replace the main switch
Reinstall
motor
Contact your SYM dealer
controller
controller
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
21
20
Countermeasures