Quick Reference

Startup Codes
Flying Codes
Radio off or not bound to the quad .....
Initialization failed ..............................
IMU initialization ................................
Fully charged battery .........................
Fully discharged battery ....................
Emergency mode
(cycle power to reinitialize) .............
Bind mode .........................................
GPS Disabled ...........................................
Smart Mode, waiting for GPS ...................
Smart Mode, GPS lock .............................
AP Mode, waiting for GPS ........................
AP Mode, GPS lock ..................................
Return to home mode activated................
GPS lost while in Smart mode (in  ight) ...
GPS lost while in AP mode or
return to home (in  ight) ..........................
Battery voltage below 10.9V.....................
Battery voltage below 10.6V.....................
Compass calibration needed ....................
CAUTION: If you see the LED signal for low battery (10.6V),
immediately land your aircraft and recharge the battery.
CAUTION: Do not attempt to use Return Home with a low battery.
Blade
®
350 QX3 LED CodesTroubleshooting Quick Reference
For a complete description of the function, capabilities and maintenance
of the Blade 350 QX3, refer to the full manual on the product page at
www.horizonhobby.com.
Problem Solution
Motors won’t start
Ensure GPS antenna has clear view of
sky and GPS lock has been acquired
Check for compass error indication
Review start up procedure in manual
Blinking yellow led
‘compass error’ indication
Move model away from large metal
objects or surfaces
Calibrate compass
(see calibration reference)
Steady beeping,
motors won’t start
Calibrate DX4 transmitter
(RTF version)
Center throttle trim (BNF version)
Won’t hold position in hover
Check GPS antenna mast is extended
Calibrate accelerometers
(see calibration guide)
Calibrate compass
(see calibration guide)
Calibrate accelerometers
(see calibration guide)
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Blade and the Horizon Hobby logo are
registered trademarks of Horizon Hobby, LLC
Created 10/14 47084 (EN)
No LED