22
GB
CARSON UL-Copter C35 50 050 7029
k. Troubleshooting
Please read this before something happens.
Problem
Cause
Reparation
The model does not
move
1. Check whether the transmitter and the receiver are
switched on
Switch transmitter and/or receiver on
2. Check the battery voltage of transmitter and
receiver
Employ completely charged batteries
3. Check whether transmitter and receiver frequency
agree
Possibly exchange the crystal
4. The trim slider of the pitch-function stands on the
upper stop
Ensure that the trim slider of the pitch
function is in neutral position or somewhat
below.
Motor does not turn
1. Motor is defective
Exchange the motor
2. Connection of controller and motor is loose
Connect the connector
The model reacts
incorrectly to the control
commands or flies
choppily
1. Check the state of the transmitter and receiver
battery charges
Employ completely charged batteries
2. Transmitter antenna not completely withdrawn
Extend the transmitter antenna totally
3. Receiver antenna still wound up
Unwind the receiver antenna completely
4. Interference
Make certain that there is no frequency
superposition by other transmitters and no
atmospheric disturbances
The model does not take
off
1. Rotor blades are twisted
Exchange the rotor blades
2. Motor is too hot
Allow the motor to cool down
3. Batteries are empty
Charge the batteries or exchange them
The rotors do not allow
shut down
1. Trim is not correctly adjusted
Correct the trim on the pitch controller
The model moves
forwards/backward and
sidewise, but does not
hover
Check whether the helicopter is exposed to a draught,
e.g. by an opened window or an air conditioner. Hover
flight is not possible when there is a draught.
Close the window / door, switch off the air
conditioner or select a more suitable room
The model vibrates
severely
1. Check whether the principal rotors run true
Possibly balance the rotor blades
2. Check whether the model is correctly balanced
Possibly balance the rotor blades
The tail does not permit
stabilizing
1. One or more rotor blades are defective
Replace one or both rotor blades
2. The rotation speed of the left and right rotor is
uneven
Trim out the engines. Correct the trimming
on the transmitter
