MS ENERGY e21, Instruction Manual

Page: 305 / 332

ENG
24
9. TROUBLESHOOTING
If your E‐Scooter does not operate as usual or appears to be faulty please read carefully
this section. Many operational issues can be resolved by users.
This simple procedure helps in restoring stable conditions for electric circuits.
Please contact Manufacturer Customer Care if the problem is unresolved or you have
other concerns.
SYMPTOMS POSSIBLE SOLUTIONS
Failed speed change
or too low maximum
velocity
 Low battery voltage
 Bad governorhandle
 Bad controller
 Chargethe battery fully
 Replace the governor handle,
controller
Turn on the power
supply, but the motor
does notwork

Bad governorhandle
 Bad electric door lock and contact
point
 Bad controller
• Replace the governor
handle,controller
• Re‐weldthecontact partsignal.
Inadequate mileage
of one‐time charging
continuation line

Tire lacks of air pressure
 Inadequate charging or failed
charger
 The battery has been damaged or
its life has expired
 Frequent braking startup,
overloading
 Tire is full of air
 The battery is adequate or
 replace the charger
 Replace the battery
The charger is not
charged

The charger wiring is loose or
damaged

The battery weld line falls off or is
damaged
 Weld the connecting line
 or replace
 Weldthe connecting line
Fault Code and Settings
Fault Code Description Solution
A
Communication Failure Check the integrity of the communication line
b
Accelerator Fault Change accelerator
C & C0
Motor Hall Fault
Check the integrity of the wiring of the motor Hall
communication line, and replace the motor if there
is no abnormality
E & E0
Undervoltage
Check whether the battery voltage is in a low‐power
state; test after charging the battery or replace
another battery with sufficient power; if the battery
power is normal, you need to replace the controller
to test
F & F0
Overcurrent
1. The internal MOS tube of the controller is broken
down and caused a short circuit, and there will
still be a need to replace the controller after
shutting down
2. During high‐speed riding, if you suddenly go
through a pothole or a high‐speed stall, the motor
is subjected to strong resistance, and a large
reverse current is generated to trigger the
protection, which will disappear after shutdown
and restart