User Manual
AIRCRAFT TROUBLESHOOTING GUIDE
Should you encounter any abnormal situations with your FlexJet TV, refer to the matrix below to determine probable cause and a
recommended solution for the action.
If the required solution does not rectify the problem, please contact product support for further assistance.
NOTICE
Unless specifically required, ALWAYS troubleshoot the airplane with the motor disengaged by unplugging all
three motor leads from the ESC.
DISCREPANCY
PROBABLE CAUSE
RECOMMENDED SOLUTION
Motor nonresponsive
(ESC initialization tones
audible)
Throttle not at idle and/or throttle trim too high
Throttle channel is reversed
Motor nonresponsive (No
ESC initialization tones
audible)
Motor disconnected from ESC
Motor turns in the wrong
direction
The three motor wires are connected
incorrectly to the ESC
Lower throttle stick and trim completely. If problem persists, ensure
that the sub-trim and travel adjust are properly set in the radio's
programming.
Reverse throttle channel in radio programming.
Ensure plugs are fully seated. Check battery and/or plugs for damage and
replace any damaged components found. DO NOT ATTEMPT TO REPAIR.
Swap any TWO motor wires.
Reduced flight time or
aircraft under powered
Flight battery not fully charged
Excessive fan noise
and/or vibration
Control surface(s)
non-responsive
Ensure battery is fully charged prior to installing in aircraft.
Failed control direction test
Control surface oscillation
Trim changes between
flight modes
26
Flight battery is weak or damaged
Remove battery from service and replace with a different battery.
Ambient temperature is too cold
Ensure battery packs are adequately warm (70°F/21°C) before flight.
Battery capacity too small for intended use
Replace battery with one of proper capacity and discharge capacity (C
rating).
ESC reaching preset LVC (low-voltage cutoff)
Recharge battery, or reduce flight time.
Battery's discharge rating too low
Replace battery with one of a higher discharge rating.
Damaged EDF Housing, rotor cone, fan rotor,
prop adapter or motor
Replace damaged components. DO NOT ATTEMPT REPAIR.
Fan rotor is not balanced
Balance or replace the fan.
Fan nut is loose
Balance or replace the adapter.
Spinner is not fully in place or tightened
Loosen the spinner bolt, adjust as required and retighten bolt.
Rotor cone or fan adapter threads not cut
straight
Replace rotor cone or fan adapter. DO NOT ATTEMPT REPAIR.
Airframe or control linkage system damaged
Replace damaged control system components. DO NOT ATTEMPT
REPAIR.
Transmitter model bound incorrectly, incorrect
active model memory, incorrect Aura data
input configuration, incorrect transmitter
settings
Consult radio manual for proper binding and model selection instructions.
Battery voltage too low
Use volt meter to check battery. Replace or recharge as necessary.
Battery disconnected from ESC
Verify that battery is connected, and that the EC5 plugs are fully seated.
Battery Eliminator Circuit (BEC) damaged
Replace ESC. DO NOT ATTEMPT REPAIR.
Damaged servo
Replace servo. DO NOT ATTEMPT REPAIR.
Incorrect transmitter or Aura 8 setting.
DO NOT FLY!
Reference transmitter and receiver sections of this manual. If no solution is
found, contact customer support at support@flexinnovations.com.
Exceeding maximum airspeed for configuration
Reduce airspeed.
Fan rotor / rotor cone not balanced
Balance or replace fan rotor / rotor cone.
Motor vibration
Inspect motor and motor mounting. Tighten screws as needed or replace
motor.
Loose Aura 8 Mounting
Realign and secure the Aura 8 to the aircraft.
Excessive control linkage slop or play
Inspect control linkage system and replace components as necessary.
Improper transmitter setup
Refer to the transmitter configuration guide in this manual to properly
configure transmitter settings.
Damaged rotor cone and/or fan
Replace rotor cone and rotor fan as needed. DO NOT ATTEMPT REPAIR.
Improperly set master gain
Ensure master gain is set for proper gain value(s).
Trims are not properly zeroed
Use Aura "Quick Trim" feature, or mechanically trim the model and reset
transmsitter trim to zero.
Sub-trims are not properly zeroed
Use Aura "Quick Trim" feature, or mechanically trim the model and reset
transmsitter sub-trim to zero.
Transmitter is out of calibration (aileron/elevator/
rudder are not at neutral with sticks centered;
reference transmitter monitor screen)
Calibrate transmitter (reference transmitter's instruction manual) or return
transmitter to manufacturer for calibration.
Fan adapter is not balanced
Tighten fan nut with properly sized wrench.