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Troubleshooting Guide
Problem
Boat will not respond
to throttle but responds
to other controls
Extra noise or extra
vibration
Reduced runtime or boat
underpowered
Boat will not Bind
(during binding) to
transmitter
Boat will not connect
(after binding) to
transmitter
Boat tends to dive in the
water or takes on water
Controls reversed
Motor overheats
Motor power pulses then
motor loses power
Boat moves forward or
backward without input
from user
Boat does not drive
straight
No steering or lack of
steering
No throttle or lack of
throttle
ESC emits a continues
tone when powered on
14
Possible Cause
Throttle channel is reversed
Damaged propeller, shaft or motor
Propeller is out of balance
Boat battery charge is low
Boat battery is damaged
Blocking or friction on shaft or propeller
Boat conditions may be too cold
Battery capacity may be too low for
conditions
Too little lubrication on driveshaft
Vegetation or other obstacles block
the propeller
Transmitter is too near boat during binding
process
Boat or transmitter is too close to large
metal object, wireless source or another
transmitter
Another compatible transmitter in bind mode
within range of the receiver
Boat battery/transmitter battery charge is
too low
ESC switch is off
Transmitter is too near boat during
connecting process
Boat or transmitter is too close to large
metal object, wireless source or another
transmitter
Boat battery/transmitter battery charge is
too low
ESC switch is off
The boat hull is not completely closed
Center of gravity is too far forward
Transmitter settings are reversed
Blocked water cooler lines
ESC uses default soft Low Voltage Cutoff
(LVC)
Weather conditions might be too cold
Battery is old, worn out or damaged
Throttle trim on transmitter not centered
Steering trim on transmitter not centered
Steering rate not adjusted correctly
Servo failed
ESC failed
Motor failed
Throttle trim not centered
Solution
Reverse throttle channel on transmitter
Replace damaged parts
Balance or replace propeller
Completely recharge battery
Replace boat battery and follow battery instructions
Disassemble, lubricate and correctly align parts
Make sure the battery is warm (above 10º C
[50º F]) before use
Replace battery or use a larger capacity battery
Fully lubricate driveshaft
Remove vegetation or obstacles from propeller
Move powered transmitter a few feet from boat,
disconnect and reconnect battery to boat
Move the boat and transmitter to another location and
attempt binding again
Power off all compatible transmitters except the one
you are trying to bind
Replace/recharge batteries
Power on ESC switch
Move powered transmitter a few feet from boat,
disconnect and reconnect battery to boat
Move boat or transmitter to another location and
attempt to connect again
Replace/recharge batteries
Power on ESC switch
Dry out the boat and ensure the hatch is fully closed
on the hull before returning the boat
to the water
Move batteries back in the hull
Do the Control Direction Test and adjust controls on
transmitter appropriately
Clean, unkink or replace water lines
Recharge boat battery or replace battery that is no
longer performing
Postpone until weather is warmer
Replace battery
Adjust throttle trim to center (12 o'clock)
Adjust steering trim so vehicle drives straight
Adjusts steering rate (ST RATE) knob on transmitter
to desired steering throw
Contact Horizon Product Support
Contact Horizon Product Support
Contact Horizon Product Support
Center throttle trim on transmitter
UL 19 Hydroplane
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