Horizon Hobby EFL17750, Instruction Manual

Page: 14 / 68

EN
Viper 90mm EDF
14
Problem Possible Cause Solution
Aircraft will not
respond to throttle
but responds to
other controls
Throttle not at idle and/or throttle trim too high Reset controls with throttle stick and throttle trim at lowest setting
Throttle servo travel is lower than 100% Make sure throttle servo travel is 100% or greater
Throttle channel is reversed Reverse throttle channel on transmitter
Motor disconnected from ESC Make sure motor is connected to the ESC
Excessive fan
noise or excessive
vibration
Damaged fan, nose cone, collet or motor Replace damaged parts
Fan is out of balance Balance or replace fan
Fan nut is too loose Tighten the fan nut
Reduced flight
time or aircraft
underpowered
Flight battery charge is low Completely recharge flight battery
Flight battery damaged Replace flight battery and follow flight battery instructions
Flight conditions may be too cold Make sure battery is not cold before use (Do not apply heat to the battery)
Battery capacity too low for flight conditions Replace battery or use a larger capacity battery
Aircraft will not Bind
(during binding) to
transmitter
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
The bind plug is not installed correctly in the bind port Install bind plug in bind port and bind the aircraft to the transmitter
Flight battery/transmitter battery charge is too low
Replace/recharge batteries
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
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
Aircraft bound to different model memory
(ModelMatchTM radios only)
Select correct model memory on transmitter
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 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
Transmitter is not bound correctly or the incorrect
airplanes was selected
Re-bind or select correct airplanes in transmitter
Flight battery charge is low Fully recharge flight battery
BEC (Battery Elimination Circuit) of the ESC is damaged Replace ESC
Controls reversed Transmitter settings are reversed Perform the Control Direction Test and adjust the controls on transmitter appropriately
Motor power pulses
then motor loses
power
ESC uses default soft 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 low Use recommended battery
Troubleshooting Guide
Troubleshooting Guide AS3X
Problem Possible Cause Solution
Oscillation
Damaged rotor or nose cone Replace rotor or nose cone
Imbalanced rotor Balance the rotor
Motor vibration Replace parts or correctly align fan unit or other 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 rotor, nose cone, or servo)
Irregular servo movement Replace servo
Inconsistent flight
performance
Trim is not at neutral If you adjust trim more than 8 clicks, adjust the ball link to remove trim
Sub-Trim is not at neutral No Sub-Trim is allowed. Adjust the servo linkage
Aircraft was not kept immobile for 5
seconds after battery connection
With the throttle stick in lowest position. Disconnect battery, then reconnect battery and keep the aircraft
still for 5 seconds
Incorrect response
to the AS3X Control
Direction Test
Incorrect direction settings in the
receiver, which can cause a crash
DO NOT fly. Correct the direction settings (refer to the receiver manual), then fly