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Transmitter is
transmitting (Power
LED flashing), but
crane/machine will not
respond
E-Stop switch engaged Pull out the E-Stop pushbutton and press
the Start/Horn pushbutton
Transmitter out of range Take the transmitter back into the range of
the receiver. Press the Start/Horn
pushbutton.
Joystick, paddle lever or switch
not in center position when
transmitter turned on
Ensure that all control devices are in center
(neutral) position when the Start button is
activated.
Receiver power off Turn on power to receiver.
Blown fuse in receiver Check all fuses. Replace if necessary.
E-Stop failure in transmitter Check E-Stop pushbutton for damage.
Check wiring to contact element for broken
or disconnected wires. Repair or replace
E-stop pushbutton or wiring.
E-Stop failure in receiver. Red
E-Stop LED on decoder board is
illuminated
Check wiring on E-Stop module, decoder
module, E-Stop decoder module. Secure
any loose connections.
E-Stop module failure Replace E-Stop module.
All crane/machine
motions operate
intermittently
Receiver antenna loose or
missing
Tighten or replace antenna.
External antenna (if used) has
loose connection, poor grounding
or interference
Tighten antenna and ground connection.
See "Connecting an External Antenna"
Section for operational precautions.
Surge suppressors not installed
on contactors
Install RC type surge suppressors on all
magnetic contactors that are controlled by
the radio remote control system
Connector wiring too close to
power wiring
Control wiring must be run separately from
power wiring.
Connector inside receiver is loose Check all connectors, reseat if necessary.
Some crane/machine
motions operate
intermittently
crane/machine motion wiring may
be loose.
Check wiring from receiver to plug and from
plug to crane/machine motion actuator.
Connector inside receiver is loose Check all connectors, reseat if necessary.
Surge suppressors not installed
on contactors
Install RC type surge suppressors on all
magnetic contactors that are controlled by
the radio remote control system
Connector wiring too close to
power wiring
Control wiring must be run separately from
power wiring.
PROBLEM PROBABLE CAUSE CORRECTION
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