User Manual
Carbon Cub S2
®
EN
32
Troubleshooting Guide
AS3X
®
System Troubleshooting Guide
Problem Possible Cause Solution
Trim change when
ight mode is
switched
Trim is not at neutral To adjust the trim more than 8 clicks, return the trim to neutral and manually adjust the clevis to center the trim
Sub-Trim is not at neutral Do not use Sub-Trim. Adjust the servo arm or the clevis
Problem Possible Cause Solution
Aircraft does not operate
There is no link between the transmitter and receiver Re-Bind the system following directions in this manual
No GPS lock (or operating indoor without disabling GPS) Move to outside and power on aircraft or disable GPS in the aircraft
Transmitter AA batteries are depleted or installed
incorrectly as indicated by a dim or unlit LED on the transmitter
or the low battery alarm
Check polarity installation or replace with fresh AA batteries
No electrical connection Push connectors together until they are secure
Flight battery is not charged Fully charge the battery
Crash has damaged the radio inside the fuselage Replace the fuselage or receiver
Aircraft keeps turning in one
direction
Rudder or rudder trim is not adjusted correctly
Adjust stick trims, then land and manually adjust aileron and/or rudder linkages
so no transmitter trim is required
Aileron or aileron trim is not adjusted correctly Adjust stick trims or manually adjust aileron positions
Aircraft does not land on heading
set on initial takeoff
Compass is out of calibration
Calibrate the compass using the “Compass Calibration Procedure” located in
this manual
GPS Function not operating
properly
The compass has been exposed to a magnetic source
Deactivate GPS system while in ight and land the aircraft. Remove any possible
magnetic sources such as cameras, camera mounts, speakers ect. Unplug and
reconnect ight battery to reactivate GPS system for next ight. Perform compass
calibration before ying again.
Aircraft is difficult to control
Wing or tail is damaged Replace damaged part
Damaged propeller Land immediately and replace damaged propeller
Center of Gravity is behind the recommended location
Shift battery forward, do not y until correct Center of Gravity location is
achieved
Aircraft nose rises steeply at half
throttle
Wind is too gusty or strong Postpone flying until the wind calms down
Elevator is trimmed ‘up’ too much
If trim must adjusted more than 4 clicks when pushing the trim button, adjust
push rod length
Battery is not installed in the correct position Move forward approximately 1/2”
Aircraft will not climb
Battery is not fully charged Fully charge battery before flying
Elevator may be trimmed ‘down’ Adjust elevator trim ‘up’
Propeller damaged or installed incorrectly Land immediately, replace or install propeller correctly
Aircraft difcult to launch in the
wind
Launching the aircraft down wind or into a cross wind Always launch the aircraft directly into the wind
Flight time is too short
Battery is not fully charged Recharge battery
Flying at full throttle for the entire ight Fly at just above half throttle to increase ying time
Wind speed too fast for safe ight Fly on a calmer day
Propeller damaged Replace propeller
Aircraft vibrates Propeller, spinner or motor damaged Tighten or replace parts
Rudder, ailerons or elevator do
not move freely
Damaged or blocked push rods or hinges Repair damage or blockage
Aircraft will not Bind (during bind-
ing) to transmitter
Transmitter is too near aircraft during binding process
Move powered transmitter a few feet from aircraft, disconnect and reconnect
battery to aircraft
Aircraft or transmitter is too near a large metal object, wireless
source or another transmitter
Move the aircraft and transmitter to another location and
attempt binding again
Bind plug is not installed correctly Install bind plug and bind aircraft to transmitter
Flight battery/Transmitter battery charge is too low Replace/recharge batteries
Aircraft will not connect
(after binding) to transmitter
Transmitter is too near aircraft during connecting process
Move powered transmitter a few feet from aircraft, disconnect and reconnect
battery to aircraft
Aircraft or transmitter is too near a large metal object, wireless
source or another transmitter
Move the aircraft and transmitter to another location and attempt
connecting again
Bind plug is left installed Rebind transmitter to aircraft and remove bind plug before cycling power
Aircraft battery/Transmitter battery charge is too low Replace/recharge batteries
Transmitter may have been bound to a different model (using
different DSM Protocol)
Bind aircraft to transmitter
After being properly adjusted,
aileron and/or rudder are not in
neutral position when
battery is plugged in
Model was moved during initial power on
Unplug ight battery and reconnect, keeping model immobile for at least 5
seconds
Virtual Fence modes will
not change between modes
correctly
Dual rates set incorrectly in transmitter setup
The dual rates should not be set lower than 70% for low rate. Set all low rates
to 70% or higher.