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Order No.: 18357-76, 02.2008. Supersedes order No.: New
Manufacturer: Carrier SCS, Montluel, France
Manufacturer reserves the right to change any product specifications without notice.
Printed in the Netherlands.
4.6 - Controller operation description
A controller continuously tests whether its electronics are
working properly. LEDs fitted to the board can be seen
beneath the transparent cover on the casing and indicate
whether the electronic circuits are operating correctly.
Red LED: controller status
LED status
NTC status
Permanently switched off
No supply to board, power supply fault
Permanently switched on
Supply to board okay, but the microcontroller is not
active or defective.
Flashing: on for 800 ms, off
for 200 ms (1 Hz)
The board works without the application code loaded
or during the initialisation of the boot loader
Flashing : on for 1 s, off for
1s (1/2 Hz)
The board works with the application code loaded
Flashing: on for 250 ms, off
for 250 ms
Factory test activated
Flashing: on for 60 ms, off
for 60 ms
The NTCs have received their address and the
diagnostic message
Flashing at any other
frequency
The electronic board works with a fault
Yellow lED: controller communication status
LED status
NTC status
Flashing
An NTC sub-controller transmits a CCN message
Off
The NTC sub-controllers do not transmit a CCN
message
5 - ENvIRONMENTAl INfORMATION
This product complies with the requirements of
the European directive 2002/95/EC of 27/01/2003
concerning the restriction of the use of hazardous
substances..