Laing Innotech GmbH + Co. KG Althuette Germany Instruction LTC 11
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Status and failure mode indicated by the LED
The LED on the controller indicates the following
Indicated code
Meaning
Failure solution
Constantly on
Controller is switched on
and or motors are
running
If LED is not on, check
the power cable
Constantly blinking
Controller is in reference
mode
Press up or down button
to perform a reference
run. Keep button
pressed until the
reference run is finished
Short and long blinks
The LED shows a
sequence of long and
short signals. This
indicates the failure
mode (F1 to F17) as
described below. E.g.
long short short short
means Failure mode 1
If a control panel with
digital height adjustment
is connected, read out
the failure code.
In case of a control
panel without digital
height adjustment read
out the combination of
long and short signals
and refer to the failure
modes described below
LED 1