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15. Troubleshooting
Even though the model and the remote control system were built with the latest available technology, there can still
be malfunctions or errors. For this reason, we would like to give you some information on how to deal with possible
problems.
The model doesn’t respond or does not respond properly
• For 2.4 GHz remote control systems, the receiver must be taught to the transmitter. This process may be referred
to by the terms of "Binding" or "Pairing".
The teaching process usually was performed by the manufacturer already; however, it can, of course, also be done
by you. Observe chapter 9.
• Are the vehicle drive battery or the batteries/rechargeable batteries in the transmitter discharged? Exchange the
drive battery or batteries/rechargeable batteries in the transmitter for new ones.
• Is the drive battery fully charged? The vehicle needs either a LiPo drive battery with 2 cells (nominal voltage 7.4 V)
or 3 cells (nominal voltage 11.1 V).
Connection of a NiMH drive battery with 6 - 9 cells is possible as well, but not recommended due to the high power
intake of the vehicle.
When using a LiPo drive battery, ensure that the undervoltage recognition is switched on (we recommend 3.0 V/cell
or higher).
If you are using a LiPo drive battery with the undervoltage recognition off, there may be deep discharge of the LiPo
drive battery, which would damage it permanently.
• Always connect a fully charged drive battery to the speed controller. Otherwise, the speed controller may calculate
the cell number incorrectly and the undervoltage recognition may set in too late.
• Did you switch on the transmitter first and then the speed controller? The speed controller will not work for reasons
of safety in case of reverse order.
• Release the throttle/brake lever at the transmitter and put the trimming of the driving function (trim controller
"TH.TRIM") to the middle position. Otherwise, the self-test of the speed controller cannot be completed after activa-
tion and the speed controller/motor will not work for reasons of safety.
• Is the drive battery connected to the speed controller correctly? Check the plug connection for whether it is contami
-
nated or oxidised.
• Is the vehicle too far away? With a fully charged drive battery and fully charged batteries/rechargeable batteries in
the transmitter, the range should be 50 m and more. The range can be decreased by outside influences, such as
interference on the transmitter frequency, or proximity to other transmitters (not only remote controller transmitters
but also WLAN/Bluetooth devices that also use a transmission frequency of 2.4 GHz), metal parts, buildings, etc.
The position of transmitter and receiver aerial to each other very strongly influences range. It is best when both the
transmitter and receiver aerial are vertical (both aerials are parallel to each other). If you point the transmitter aerial
at the vehicle, the range will be very short!
• Check the correct position of the speed controller and steering servo plugs in the receiver. If the plugs are inserted
rotated by 180°, the speed controller and steering servo will not work.
If, however, the speed controller and steering servo plugs are swapped, the throttle/brake lever controls the steering
servo, and the turning wheel controls driving!
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