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Troubleshooting Guide
If you have any problems with setup or programming that cannot be fixed by the
Troubleshooting Guide, please contact the appropriate Horizon Product Support
office.
Problem
Possible Solutions
Aircraft will not “throttle up”
but all other controls seem to
function.
Lower throttle trim and/or throttle stick to their
lowest settings.
Propeller or motor shaft is
broken.
Replace with Prop with Spinner (EFL9051) or
Prop Shaft (HBZ4904).
Aircraft appears to show
significant decrease in flight
time.
Recharge flight battery completely.
Replace AA batteries in charger and recharge
flight battery completely.
Replace EFLB1501S25 battery and read the
“Battery Warnings and Guidelines” section of
manual.
Charger light stays on after
Li-Po battery is disconnected,
or remains on for longer than
40 minutes when charging.
Replace AA batteries in charger.
Aircraft appears to have less
power.
Lubricate the bushings of the gearbox.
Lubricate the bushings of the motor.
In cold weather, make sure the batteries are
warm before flight.
LED on aircraft remains
flashing and cannot be
controlled by transmitter.
Unplug and reconnect flight battery.
Rebind the aircraft to the desired compatible
transmitter.
Move transmitter (powered on) a few feet
from the aircraft prior to reconnecting the
flight battery.
Aircraft appears to roll or
pitch towards a certain
direction.
Trim control surfaces using the transmitter
until the aircraft no longer moves that
direction.
Controls appear to be
reversed after binding to a
different transmitter.
Read the “Control Test” section of manual.
Aircraft does not function
after connecting flight battery
and the aircraft smells burnt.
Replace the receiver/ESC board (PKZ3351)
and check for correct polarity when
connecting the flight battery.
Limited Warranty
What this Warranty Covers
Horizon Hobby, Inc. (“Horizon”) warrants to the original purchaser that the prod-
uct purchased (the “Product”) will be free from defects in materials and work-
manship at the date of purchase.
What is Not Covered
This warranty is not transferable and does not cover (i) cosmetic damage, (ii)
damage due to acts of God, accident, misuse, abuse, negligence, commercial
use, or due to improper use, installation, operation or maintenance, (iii) modifica-
tion of or to any part of the Product, (iv) attempted service by anyone other than
a Horizon Hobby authorized service center, (v) Product not purchased from an
authorized Horizon dealer, or (vi) Product not compliant with applicable technical
regulations.
OTHER THAN THE EXPRESS WARRANTY ABOVE, HORIZON MAKES NO OTHER
WARRANTY OR REPRESENTATION, AND HEREBY DISCLAIMS ANY AND ALL
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
