Samsung AM028NNNDEH Series - MCU Branch Part Setup Error - Repeated Setup for the same Address over 3 Times

Troubleshooting
80
Samsung Electronics
4-4-32 MCU branch part setup error – Repeated setup for the same address over 3 times
1. How to check
Find an MCU that is composed as the following picture to carry out assembly of branch part again. After completing the re-setting,
press K3 button on the button to reset or turn it off to restart.
MCU BOX #0
MCU PCB
OFF
MCU
address setup
ON
Setting error
Indoor unit
Indoor unit address
Branch part use setup
4 2 1 2 5 6
0
Branch A
4
B
2
C
D E
5
F
6
MCU BOX #0
MCU PCB
OFF
MCU
address setup
ON
Setting error
Indoor unit
Indoor unit address
Branch part use setup
4 2 2 2 5 6
0
Branch A
4
B
2
C
D E
5
F
6
Outdoor unit display
Indoor unit display
Operation Timer
Criteria
• The same indoor unit address was setup more than 3 times in MCU.
Cause of problem
• MCU indoor unit address setting error.