10
EN
CIRCUIT
™
TROUBLESHOOTING GUIDE
Problem
Possible Cause
Solution
Short run time
Battery damaged/not charged
Check/change battery
Motor dirty
Check/clean
Sluggish action
Motor dirty
Check/clean
Bind in drivetrain
Clean/adjust
Vehicle battery is not charged
Replace/recharge
Controls reversed
ST. REV or TH. REV
Change switch position
Motor/ESC overheat
Over-geared for the driving environment
Install smaller pinion on the motor
Does not operate
Transmitter batteries low
Replace/recharge
Transmitter powered off
Power on
ESC powered off
Power on
Vehicle battery is not charged
Replace/recharge
Dual-rate (D/R) steering and/or throttle knobs on
transmitter are turned counterclockwise
Adjust dual-rate (D/R) steering or throttle knobs clockwise
to desired setting
Poor range
Transmitter batteries low
Replace/recharge
Receiver antenna damaged
Check/repair/replace
The system will not connect
Transmitter and receiver too near each other
Move transmitter 3.3–9.8ft (1–3m) from receiver
Transmitter and receiver too near large metal
objects (vehicles, etc.)
Move away from large metal objects (vehicles, etc.)
Throttle trim out of center on transmitter
Set throttle trim on transmitter to zero. Turn off and on
transmitter and vehicle
Receiver accidentally put in bind mode so receiver
is no longer bound
Rebind transmitter and receiver
The receiver goes into failsafe
mode a short distance away from
the transmitter
Check the receiver antenna to be sure it is not cut
or damaged
Make sure the antenna is in the antenna tube Contact
Horizon Product Support
The receiver quits responding
during operation
Low battery voltage
Completely recharge battery
Loose or damaged wires or connectors between
battery and receiver
Do a check of the wires and connection between battery
and receiver. Repair or replace wires and/or connectors
Receiver and transmitter are not
bound
Transmitter accidentally put in bind mode, ending
bind to receiver
Bind transmitter to receiver
Vehicle moves forward or back-
ward without input from user
Throttle trim on transmitter not centered
Adjust throttle trim on transmitter to neutral point
Car does not drive straight
Steering trim on transmitter not centered
Adjust steering trim on transmitter so the vehicle drives
straight
No steering or lack of steering
Steering dual-rate (D/R) on transmitter not
adjusted correctly
Adjust steering dual-rate (D/R) knob on transmitter
clockwise to desired steering throw
Servo failed
Contact Horizon Product Support
No throttle or lack of throttle
Throttle dual-rate (D/R) on transmitter not
adjusted correctly
Adjust throttle dual-rate (D/R) knob on transmitter
clockwise to desired steering throw
ESC failed
Contact Horizon Product Support
Motor failed
Contact Horizon Product Support
Clicking noise in transmission
area
Dirt or rocks in spur gear
Remove gear cover and inspect. If necessary, replace gear
Motor moved away from spur gear
Reset gear mesh
