Errors Display And Buttons Of Led Board; Errors Display; Functions Of The Buttons - Delta 21CK018C24 Instruction Manual

7 Errors display and buttons of LED board

. There are one yellow LED used as Timer LED, one green LED used as Compressor LED, one red LED used as
Run LED on the LED board. AND also two buttons, one is Auto button, the other is Test button .We will introduce
the error displaying of the LED and the functions of the buttons

7.1 Errors display

● Yellow LED:
(1)on/off
It is on when setting timer function.
It is off if there is not setting.
(2)Blink
It continuously blinks once upon indoor temperature sensor malfunction.
It continuously blinks twice upon evaporator temperature sensor malfunction.
● Green LED:
(1)on/off
It is on during running of compressor.
It is off upon stop of compressor
● Red LED:
(1)on/off
It is on upon unit ON..
It is off upon unit OFF.
(2)Blink
It continuously blinks once upon communication malfunction.
It continuously blinks twice upon water overflow protection.
It continuously blinks 3 times upon antifreezing protection.
It continuously blinks 4 times upon indoor high temperature resistance protection.
It continuously blinks 5 times in forcible running mode.

7.2 Functions of the buttons

● Auto button:
The unit will run in auto mode upon pressing this button at unit OFF and will stop upon pressing it at unit
OFF.
● Test button:
This button is only for debug.
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