Kaysun KCCT-64 I (B), Installation And Owner'S Manual, Page: 12 / 28

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2.3 Function instructions
2.3.1 State indication
1. LED state indication lamp
1) Normal state
1- Normally on
The LED indication lamp will be normally on when any one of the following situations display:
a) In the centralized controller network, one or more air conditioners are under operating state.
b) Through the centralized controller’s operation, when the centralized controller is
sending order to the air conditioner, LED indication lamp will be normally on. When finish
sending, LED indication lamp will be off.
2- Off
The air conditioners in the centralized controller network are all under off status.
2) Abnormal state
If the air conditioner in the centralized controller are error or the controller has error, LED
indication lamp will be flashed as 2 Hz.
2. Backlight
When the backlight is off, press any key except”
”, the backlight will be on. Press the key of
centralized controller, backlight will be on.
No key operation over 30s, backlight will be off.
3. Buzzer
Under the situation of the backlight is on and the centralized controller key are un-lock,
press any key (except for the ), the centralized controller will carry on relative
function, the buzzer will buzz once only. If this key has long press function, the centralized
controller will carry on the relative function, and the buzzer will buzz once only.
Under the backlight is off, press any key (except for key), only light on the backlight, the
centralized controller will not operate the key, and the buzzer will not buzz.
2.3.2 Power on or reset
When the centralized controller is powered on or reset through the key :
The buzzer long buzz for 2 seconds: all display segments of LCD are luminous for 2 seconds
and then goes off;
1 second later, the system enters the normal display status. The centralized controller is in
the main page display status and displays the first page, and searches the in-service air
conditioners in the network.
Once the search is finished, the centralized controller enters the mode setting page,
and sets the first in-service air conditioner by default.
2.3.3 Emergent shutdown and compulsory startup
When the emergent stop switch of the centralized controller is turned on, all air
conditioners in the network of the centralized controller will be shut down compulsorily. The
centralized controller and computer and all functional modules are disabled from startup and
shutdown until the emergent stop switch is turned off. When the forced-on switch