E-flite UMX Spacewalker Instruction Manual download pdf (Page 13)

Problem Possible Cause Solution

Aircraft will not respond

to throttle but responds

to other controls

Throttle stick and/or throttle trim too high Reset controls with throttle stick and throttle

trim at lowest setting

Throttle channel is reversed Reverse throttle channel on transmitter

Motor disconnected from receiver Open fuselage and make sure motor is

properly connected to the receiver

Extra propeller noise or

extra vibration

Damaged propeller, prop shaft, spinner or

motor

Replace damaged parts

Reduced ﬂ ight time or

aircraft underpowered

Flight battery charge is low Completely recharge ﬂ ight battery

Propeller installed backwards Install propeller with numbers facing forward

Flight battery damaged Replace ﬂ ight battery and follow ﬂ ight battery

instructions

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

Battery capacity too low for power drawn Replace battery or use a larger capacity

battery

LED on receiver ﬂ ashes

and aircraft will not bind

to transmitter (during

binding)

Transmitter too near aircraft during binding

process

Power off transmitter, move transmitter a

larger distance from aircraft, disconnect and

reconnect ﬂ ight battery to aircraft and follow

binding instructions

Bind switch or button not held long enough

during bind process

Power off transmitter and repeat bind pro-

cess. Hold transmitter bind button or switch

until receiver is bound

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

LED on receiver ﬂ ashes

rapidly and aircraft will

not respond to transmit-

ter (after binding)

Less than a 5-second wait between ﬁ rst

powering on transmitter and connecting

ﬂ ight battery to aircraft

Leaving transmitter on, disconnect and

reconnect ﬂ ight battery to aircraft

Aircraft bound to different model memory

(ModelMatch

™

radios only)

Select correct model memory on transmitter

and disconnect and reconnect ﬂ ight battery

to aircraft

Flight battery/transmitter battery charge is

too low

Replace/recharge batteries

Transmitter may have been bound to a

different model (or with a different DSM

Protocol)

Select the right transmitter or bind to the

new one

Aircraft or transmitter is too close to large

metal object, wireless source or another

transmitter

Move aircraft and transmitter to another

location and attempt linking again

Control surface does

not move

Control surface, control horn, linkage or

servo damage

Replace or repair damaged parts and adjust

controls

Wire damaged or connections loose Do a check of wires and connections, con-

nect or replace as needed

Flight battery charge is low Fully recharge ﬂ ight battery

Control linkage does not move freely Make sure control linkage moves freely

Controls reversed Transmitter settings reversed Adjust controls on transmitter appropriately

Troubleshooting Guide

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E-flite UMX Spacewalker Instruction Manual Page 13

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