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9-6. 7-segment display function
7-segment display on outdoor unit (interface P.C. board)
The interface control P.C. board features a 7-segment LED display designed to check operational status. Display
items can be changed by changing the combination of the number settings of rotary switches provided on the P.C.
board (SW01, SW02 and SW03).
Checking procedure to be followed in event of abnormal shutdown
If the system is shut down due to a trouble in the outdoor unit, perform checks in the following steps:
1
Open the panel of the outdoor unit, and check the 7-segment display.
The check code is displayed in the right-hand section of the 7-segment display [B].
[U1] [OOO] ([OOO]: Check code)
* To check the check code, set the rotary switches SW01 / SW02 / SW03 to [1/1/1].
If there is a sub-code, the display alternates between the check code [OOO] (3 seconds) and the sub-code
[OOO] (1 second).
2
Check the check code and follow the applicable diagnostic procedure.
3
Perform checks in accordance with the diagnostic procedure applicable to the check code.
SW09
SW07
SW11
SW06
SW10
SW12 SW13
SW16
SW14
SW17
D600 D601 D602 D603 D604
SW04
SW05
SW15
SW01
SW02
SW03
SW30
D600 D601 D602 D603 D604
SW04
SW05
SW15
SW01
SW02
SW03
Interface P.C. board
Push switch
7-segment
display [A]
Push switch
7-segment
display [B]
Rotary switches
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2016/04/08 17:21:21
2016/04/08 17:21:21
