Samsung AM TXMDCH Series - Setting outdoor unit option switch and key function

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Basic segment display
Step Display content Display
At initial power input Checking segment display
SEG 1 SEG 2 SEG 3 SEG 4
“8” “8” “8” “8”
While setting
communication between
indoor and outdoor unit
(Addressing)
Number of connected indoor units
SEG 1 SEG 2 SEG 3 SEG 4
“A” “d”
Number of communicated
units
Refer to "View Mode" for
communication address
After communication
setting
(usual occasion)
MCU, Indoor unit address
SEG 1 SEG 2 SEG 3 SEG 4
I/U: “A”
MCU: “C”
I/U: “0”
MCU: “1”
Reception address
(in decimal number)
❋ I/U : Indoor unit, MCU : HR Changer & MCU
Setting outdoor unit option switch and key function
Setting outdoor unit option switches : A TYPE
Terminal blocks (R1, R2) for connection with the Upper Controller
(DMS, Touch, On/Off Controller, etc.)
Do not connect the power and communication wires to these terminal blocks
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