EFL1850 X-VERT Manual

EN
16
Problem Possible Cause Solution
Aircraft will not arm Throttle cut switch in the disarm position (position 1) Set the throttle cut switch to the arm position (position 0)
Aircraft will not re-
spond 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
Motors disconnected from ESCs Make sure motors are connected to the ESCs
Extra propeller noise
or extra vibration
Damaged propeller and spinner, collet or motor Replace damaged parts
Propeller is out of balance Balance or replace propeller
Prop bolt is loose Tighten the prop bolt
Reduced fl ight time
or aircraft underpow-
ered
Flight battery charge is low Completely recharge  ight battery
Flight battery damaged or old Replace  ight battery with a fresh battery and follow  ight battery instructions
Flight conditions too cold Make sure battery is warm before use
Battery capacity too low for  ight 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  ight
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
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  ight
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
Aircraft bound to different model memory
(ModelMatch
™
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
Servo 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
aircraft was selected
Re-bind or select correct airplanes in transmitter
Flight battery charge is low Fully recharge  ight battery
Flight controller is damaged Replace the  ight controller
Controls reversed Transmitter settings are reversed Perform the Control Direction Test and adjust the controls on transmitter appropriately
Oscillation
Damaged propeller Replace propeller
Imbalanced propeller Balance the propeller
Motor vibration Replace parts or correctly align all parts and tighten fasteners as needed
Loose battery Use more hook and loop material to secure the battery
Loose  ight controller Align and secure the  ight controller in fuselage
Loose aircraft controls Tighten or otherwise secure parts (servo, arm, linkage, horn and control surface)
Worn parts Replace worn parts (especially propeller or servo)
Irregular servo movement Replace servo
Inconsistent fl ight
performance
Trim is not at neutral If you adjust trim more than 8 clicks, adjust the clevis to remove trim
Sub-Trim is not at neutral Remove all sub-trim. Adjust the servo linkage for proper alignment of surfaces
Aircraft was not kept upright and 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
Aircraft motor surges
while in forward
flight modes
Low battery. Low Voltage Cutoff is being triggered. Recharge  ight battery or replace battery that is no longer performing
Aircraft does not
maintain or gain
altitude in vertical
flight mode
Low battery. Low Voltage Cutoff is being triggered. Recharge  ight battery or replace battery that is no longer performing
Aircraft immediately
flips or crashes on
throttle up
Propellers installed incorrectly
Install the propellers with the “R” propeller on the right side motor
and the “L” propeller on the left side motor
Aircraft is unstable in
yaw or yaws to one
side under throttle in
forward flight
Damaged propeller Inspect the propellers and replace any damaged parts
Troubleshooting Guide