E-flite Apprentice S 15e RTF with SAFE User Manual download pdf (Page 25)

Problem Possible Cause Solution

Oscillation

Flying over recommended

airspeed

Reduce air speed

Damaged propeller or

spinner

Replace propeller or spinner

Imbalanced propeller

Balance the propeller. For more information, view John Redman’s propeller balancing video at www.

horizonhobby.com

Motor vibration Replace parts or correctly align all parts and tighten fasteners as needed

Loose receiver Total system failure. Align and secure receiver in fuselage

Loose aircraft controls Tighten or otherwise secure parts (servo, arm, linkage, horn and control surface)

Worn parts

Adjust gain to compensate for parts wear or replace worn parts (especially propeller, pivot points or

servo)

Irregular servo rotation Replace servo

Trim is at extreme

and aircraft does not

ﬂy straight or level

Trim is not at neutral If you adjust trim more than 4 clicks, adjust the clevis to mechanically remove trim

Channel 5 switch

positions do not

operate as described

In your transmitter, Channel

5 servo is set to REVERSE

In your transmitter, set Channel 5 servo to NORMAL

Troubleshooting Guide for SAFE Technology

Troubleshooting Guide

Problem Possible Cause Solution

Aircraft will not re-

spond to throttle but

responds to other

controls

Throttle not at lowest position 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

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 nut is too loose Tighten the prop nut

Spinner is not tight or fully seated in place Tighten the spinner or remove the spinner and turn it 180 degrees

Reduced ﬂight time

or aircraft under-

powered

Flight battery charge is low Completely recharge ﬂight battery

Propeller installed backwards Install propeller with numbers facing forward

Flight battery damaged Replace ﬂight battery and follow ﬂight battery instructions

Flight conditions may be too cold Make sure battery is warm before use

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

ESC is powered off Power on the ESC switch

Continued

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E-flite Apprentice S 15e RTF with SAFE User Manual Page 25

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