®
Trouble Shooting Guide
Problem
Possible Cause
Solution
Aircraft oscillates
Loose or damaged spinner nut, propeller, shaft or
motor
Replace parts or correctly align all parts and tighten fasteners
as needed
Loose receiver
Align and secure receiver in fuselage
Loose aircraft controls
Tighten or otherwise secure parts (servo, arm, linkage, horn and control
surface)
Worn parts
Replace worn parts (especially propeller, spinner or servo)
Trim is at extreme and
aircraft does not fly
straight or level
Trim is not at neutral
If you need to adjust trim more than 8 clicks, return the trim to neutral and
manually adjust the clevis to mechanically remove trim
Trim change when
flight mode is switched Receiver did not save trim setting
After adjusting transmitter trim in the air or on the ground, do not touch the
control sticks for 2 seconds
Aircraft will not re-
spond to throttle but
responds to other
controls
Throttle not at lowest position or throttle trim too
high
Reset controls with throttle stick and throttle trim at lowest
setting
Throttle channel is reversed
Reverse throttle channel on transmitter
Motor disconnected from Receiver/ESC
Make sure motor is connected to the Receiver/ESC
Extra propeller noise or
extra vibration
Damaged propeller and spinner nut, shaft
or motor
Replace damaged parts
Propeller is out of balance
Balance or replace propeller
Prop nut is too loose
Tighten the prop nut
Reduced flight time or
aircraft underpowered
Flight battery charge is low
Completely recharge flight battery
Propeller installed backwards
Install propeller with numbers facing forward
Flight battery damaged
Replace flight battery and follow flight battery instructions
Flight conditions may be too cold
Make sure battery is warm before use
Aircraft will not Bind
(during binding) to
transmitter.
Refer to the transmit-
ter manual for binding
instructions
Transmitter too near aircraft during
binding process
Move powered transmitter a few feet from aircraft, disconnect and reconnect
flight battery to aircraft
Aircraft or transmitter is too close to large metal
object, wireless source or another transmitter
Move aircraft and transmitter to another location and attempt binding again
Flight battery/transmitter battery charge is too low
Replace/recharge batteries
The bind plug is not installed correctly in the bind
port
Install bind plug in bind port and bind the aircraft to the transmitter
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
Aircraft will not
connect (after binding)
to transmitter
Refer to the transmit-
ter manual for binding
instructions
Transmitter too near aircraft during
connecting process
Move powered transmitter a few feet from aircraft, disconnect and reconnect
flight battery to aircraft
Aircraft or transmitter is too close to large metal
object, wireless source or another transmitter
Move aircraft and transmitter to another location and attempt
connecting again
Bind plug left installed in bind port
Rebind transmitter to the aircraft and remove the bind plug before cycling
power
Flight battery/Transmitter battery charge is too low Replace/recharge batteries
Transmitter may have been bound to a
different aircraft using different DSM protocol
Bind aircraft to transmitter
Control surface does
not move
Control surface, control horn, linkage or servo dam-
age
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
Receiver is damaged
Replace Receiver
Controls reversed
Transmitter settings are reversed
Perform the Control Direction Test and adjust the controls on transmitter ap-
propriately
Motor power pulses
then motor loses
power
Normal Low Voltage Cutoff (LVC)
Recharge flight battery or replace battery that is no longer performing
Weather conditions might be too cold
Postpone flight until weather is warmer
Battery is old, worn out, or damaged
Replace battery
Battery C rating might be too small
Use recommended battery
F4U Corsair S
EN
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