15
Brushless ESC Introduction
Trouble shooting
Trouble Possible Reason Action
After powering up, ESC
emits the sound of battery
cells, but motor can't run.
After powering up, motor
doesn't run and doesn't
emit any sound.
Motor does n’t work and no
audible tone emitted after
connecting the battery.
Servos are not working
either.
1. Poor/loose Connection between battery Pack
and ESC.
2. No power.
3. Poor soldered connections.
4. Wrong battery cable polarity.
5. ESC throttle cable connected to receiver in the
reverse polarity.
Check all the connections make sure you
are doing it right.
When the ESC is powered
on, the motor does not
work and an alarm sound
(continuously beeping) will
sound.
The throttle stick is not in the bottom
position after power on.
Swap any two of the three cable connec-
tions between the ESC and the Motor or
access the Motor Rotation function via
the ESC programming mode and change
the pre-set parameters.
Check proper operation of the radio
equipment.
Check the placement of the ESC and the
Receiver and check the route of the
receiver’s aerial and ESC.
Move the throttle stick to the bottom
position.
Motor runs in reverse
rotation.
Wrong cables polarity between the ESC
and the motor.
1.Poor/loose connection between ESC and mo-
tor.
2. Burnt motor coils.
3. The battery pack voltage exceeds the accept-
able range.
4. Throttle stick is not at the lowest position.
5. The ESC throttle calibration has not set up.
1. Check all the connections make sure you
are doing it right.
2. Change a new motor.
3. Solder the wires again.
4. Check the battery pack, use full-charged
battery.
5. Set throttle range again.
Motor stops running in
flight.
Lost throttle signal.
Motor
does not work but
servos do.
1.Bad connection between ESC and battery.
2.Bad soldering cause bad contact.
3.Low voltage of the battery.
4.Quality problem of ESC.
1.Clean the connectors or replace them,
check the connection polarity.
2.Solder the wires again.
3.Check battery pack, use full-charged
battery.
4.Change ESC.
ESC doesn't set throttle range. Set throttle range again.
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