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Troubleshooting
4-4-33 MCU branch part setup error – Overlapping Indoor unit Address setup
Outdoor unit display
Indoor unit display
×(Operation)
Criteria
• Occurs when an indoor unit address setup switch in MCU has been overlapped.
Cause of problem
• Repeated indoor unit address.
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.
4-76
◑(Timer)
◑(Fan)
◑(Filter)
MCU BOX #0
MCU PCB
OFF
4
2
2
0
Indoor unit address
Branch A
B
C
D
MCU BOX #1
MCU PCB
OFF
4
0
1
2
Indoor unit address
Branch A
B
C
D
×(Defrost)
MCU
address setup
0
ON
Branch part use setup
5
6
E
F
MCU
address setup
1
ON
Branch part use setup
5
7
E
F
Samsung Electronics
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Troubleshooting
