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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 fl ight) ...
GPS lost while in AP mode or
return to home (in fl 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 Codes

Troubleshooting 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

)

©2014 Horizon Hobby, LLC
Blade and the Horizon Hobby logo are
registered trademarks of Horizon Hobby, LLC
Created 10/14   47084 (EN)

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