E-FLITE CARBON-Z YAK 54, Instruction Manual, Page: 15 / 19

EN
Troubleshooting Guide
Problem Possible Cause Solution
Aircraft will not respond to throttle
but responds to other controls • ESC is not armed.
• Throttle channel is reversed • Lower throttle stick and throttle trim
to lowest settings.
• Reverse throttle channel on
transmitter
Extra propeller noise or extra
vibration • Damaged spinner, propeller,
motor or motor mount
• Loose propeller and spinner parts
• Propeller installed backwards
• Replace damaged parts
• Tighten parts for propeller adapter,
propeller and spinner
• Remove and install propeller
correctly
Reduced fl ight time or aircraft
underpowered • Flight battery charge is low
• Propeller installed backwards
• Flight battery damaged • Completely recharge fl ight battery
• Remove and install propeller
correctly
• Replace fl ight battery and obey
fl ight battery instructions
LED on receiver fl ashes quickly
with bind plug installed and
aircraft cannot be controlled by
transmitter • Transmitter too close to aircraft
• Transmitter bound to another
aircraft
• Batteries in transmitter low
• Move powered transmitter a few
feet from aircraft, disconnect and
connect fl ight battery to aircraft and
re-bind.
• Bind transmitter to aircraft receiver
• Replace transmitter batteries
Control surface does not move,
or is slow to respond to control
inputs. • Control surface, control horn,
linkage or servo damage
• Wire damaged or connections
loose
• Replace or repair damaged parts
and adjust controls
• Do a check of connections for
loose wiring
Controls reversed • Channels need to be reversed in
the transmitter
• Do the Control Direction Test and
adjust controls for aircraft and
transmitter
Motor loses power
Motor power pulses then motor
loses power • Damage to motor, or battery
• Loss of power to aircraft
• ESC uses default soft Low Voltage
Cutoff (LVC)
• Do a check of batteries, transmitter,
receiver, ESC, motor and wiring for
damage (replace as needed)
• Land aircraft immediately and
Recharge fl ight battery
LED on receiver fl ashes slowly • Power lost to receiver • Check connection from ESC to
receiver
• Check servos for damage
• Check linkages for binding
FREE FLIGHT
1. I will not launch my model aircraft unless I am
at least 100 feet downwind of spectators and
automobile parking.
2. I will not fl y my model aircraft unless the launch
area is clear of all individuals except my
mechanic, offi cials, and other fl iers.
3. I will use an effective device to extinguish any
fuse on the model aircraft after the fuse has
completed its function.
CONTROL LINE
1. I will subject my complete control system
(including the safety thong where applicable) to
an inspection and pull test prior to flying. The
pull test will be in accordance with the current
Competition Regulations for the applicable model
aircraft category. Model aircraft not fitting a
specific category shall use those pull-test
requirements as indicated for Control Line
Precision Aerobatics.
2. I will ensure that my flying area is clear of all
utility wires or poles and I will not fly a model
aircraft closer than 50 feet to any aboveground
electric utility lines.
3. I will ensure that my fl ying area is clear of all
nonessential participants and spectators before
permitting my engine to be started.
Please see your local or regional modeling
association’s guidelines for proper, safe operation of
your model aircraft.
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