BNF UMX Radian Instruction Manual page 12

Troubleshooting Guide (continued)
Problem
LED on receiver Transmitter is too near aircraft during
fl ashes rapidly binding process
and aircraft will
not bind to
transmitter
Bind switch or button was not held
(during binding)
while transmitter was powered on
Aircraft or transmitter is too close to
large metal object, wireless source or
another transmitter
LED on receiver Less than a 5-second wait between fi rst
fl ashes rapidly powering on transmitter and connect-
and aircraft will ing fl ight battery to aircraft
not respond
Aircraft is bound to a diff erent model
to transmitter
memory (ModelMatch
(after binding)
Flight battery/transmitter battery
charge is too low
Transmitter may have been bound to a
diff erent model (or with a diff erent DSM
Protocol)
Aircraft or transmitter is too close to
large metal object, wireless source or
another transmitter
Control surface Control surface, control horn, linkage or
does not move servo damage
Wire damaged or connections loose
Flight battery charge is low
Control linkage does not move freely
Controls Transmitter settings reversed
reversed
Motor loses Damage to motor or power components Do a check of motor and power compo-
power
Nut on prop shaft is too tight
Motor power Battery power is down to the point of
quickly decreas- receiver/ESC Low Voltage Cutoff (LVC)
es and increases
then motor
loses power
Servo locks or Travel adjust value is set above 100%
freezes at full overdriving the servo
travel
EN
12
Possible Cause
TM
radios only)
Solution
Power off transmitter, move transmitter a
larger distance from aircraft, disconnect
and reconnect fl ight battery to aircraft
and follow binding instructions
Power off transmitter and repeat bind
process
Move aircraft and transmitter to another
location and attempt binding again
Leaving transmitter on, disconnect and
reconnect fl ight battery to aircraft
Select correct model memory on trans-
mitter and disconnect and reconnect
fl ight battery to aircraft
Replace/recharge batteries
Select the right transmitter or bind to the
new one
Move aircraft and transmitter to another
location and attempt connecting again
Replace or repair damaged parts and
adjust controls
Do a check of wires and connections;
connect or replace as needed
Fully recharge fl ight battery
Make sure control linkage moves freely
Do the Control Direction Test and adjust
controls on transmitter appropriately
nents for damage (replace as needed)
Loosen prop shaft nut until propeller
shaft turns freely
Recharge fl ight battery or replace battery
that is no longer performing
Set Travel adjust to 100% or less and/or
set sub trims to Zero and adjust linkages
mechanically.