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4-5-31 MCU branch part setup error – Overlapping Indoor unit Address setup
Outdoor unit display
(Operation)
Indoor unit display
Criteria
Cause of problem
1. How to check
Check the setup switch for the number of indoor units in MCU
After completing resetting, press the outdoor unit's K3 button to reset or turn off to restart.
Samsung Electronics
◑(Timer)
◑(Fan)
◑(Filter)
address
MCU BOX #0
address setup
MCU PCB
ON
OFF
4
2
2
0
5
Indoor unit address
Branch A
B
C
D
MCU BOX #1
address setup
MCU PCB
ON
OFF
4
0
1
2
5
Indoor unit address
Branch A
B
C
D
(Defrost)
MCU
0
Branch part use setup
6
E
F
MCU
1
Branch part use setup
7
E
F
Troubleshooting
4-90
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