Mcu Branch Part Setup Error - Repeated Setup For The Same Address Over 3 Times - Samsung AM045NN4DEH Series Service Manual

Troubleshooting
4-4-32 MCU branch part setup error – Repeated setup for the same address over 3 times
Outdoor unit display
Indoor unit display
Criteria • The same indoor unit address was setup more than 3 times in MCU.
Cause of problem • MCU indoor unit address setting error.
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.
80
MCU BOX #0
OFF
4 2
Branch A B
Indoor unit
4 2
MCU BOX #0
4
Branch A
Indoor unit
4
MCU
address setup
0
MCU PCB
ON
Branch part use setup
1 2 5 6
Setting error Indoor unit address
Operation Timer
C D E
5
address setup
MCU PCB
ON
OFF
2 2 2 5
Setting error Indoor unit address
B C D E
2 5
F
6
MCU
0
Branch part use setup
6
F
6
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