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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. Also observe the enclosed operating instructions for the remote control system.
The model doesn’t respond or does not respond properly
•
Check the setting of the drive mode; see chapter 10. c). Always choose normal mode for your buggy (and not
crawler mode).
•
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. Also observe the separately enclosed operating instructions for the remote control system.
• 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.
• 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.
•
Is the drive battery connected to the speed controller correctly? Check the plug connections for whether it is con-
taminated or oxidised.
•
Is the drive battery fully charged?
This vehicle uses a 6-cell NiMH drive battery (nominal voltage 7.2 V).
The speed controller will overheat when used with a LiPo drive battery and ultimately damage it. For that
reason, use only a NiMH drive battery with 6 cells, and never use a LiPo drive battery with 2 cells.
•
If the vehicle stops when driving, the undervoltage recognition may have been activated since the voltage of the
connected rechargeable battery has dropped below 6.0 V. Connect a new, fully charged rechargeable battery to
the vehicle (first take a break of at least 5 - 10 minutes so that the speed controller and the motor can cool off).
•
The overtemperature protection of the speed controller has been activated. Wait for a few minutes until the speed
controller has cooled off.
•
Is the vehicle too far away? With a fully charged drive batteries 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. 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 at the transmitter
controls the steering servo, and the wheel controls driving!
Summary of Contents for Bulldog
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