EN
14
UMX
™
Gee Bee
®
Problem
Possible Cause
Solution
LED on receiver
flashes and aircraft
will not bind to
transmitter (during
binding)
Transmitter too near aircraft during binding
process
Power off transmitter, move transmitter a
larger distance from aircraft, disconnect and
reconnect flight battery to aircraft and follow
binding instructions
Bind switch or button not held long enough
during bind process
Power off transmitter and repeat bind process.
Hold transmitter bind button or switch until
receiver is bound
LED on receiver
flashes rapidly
and aircraft will
not respond to
transmitter (after
binding)
Less than a 5-second wait between first
powering on transmitter and connecting
flight battery to aircraft
Leaving transmitter on, disconnect and
reconnect flight battery to aircraft
Aircraft bound to different model memory
(ModelMatch
™
radios only)
Select correct model memory on transmitter
and disconnect and reconnect flight battery to
aircraft
Flight battery/transmitter battery charge is
too low
Replace/recharge batteries
Control surface does
not move
Control surface, control horn, linkage or
servo damage
Replace or repair damaged parts and adjust
controls
Wire damaged or connections loose
Do a check of wires and connections, connect
or replace as needed
Flight battery charge is low
Fully recharge flight battery
Control linkage does not move freely
Make sure control linkage moves freely
Controls reversed
Transmitter settings reversed
Adjust controls on transmitter appropriately
Motor loses power
Damage to motor or power components
Do a check of motor and power components for
damage (replace as needed)
Motor power quickly
decreases and
increases then motor
loses power
Battery power is down to the point of
receiver/ESC Low Voltage Cutoff (LVC)
Recharge flight battery or replace battery that
is no longer performing
Motor/ESC is not
armed after landing
Over Current Protection (OCP) stops the
motor when the transmitter throttle is set
high and the propeller cannot turn
Fully lower throttle and throttle trim to arm ESC
Servo locks or freezes
at full travel
Travel adjust value is set above 100%
overdriving the servo
Set Travel adjust to 100% or less and/or set
sub-trims to Zero and adjust linkages
mechanically
Troubleshooting Guide (Continued)