Mcu Branch Part Setup Error - Repeated Setup For The Same Address Over 3 Times - Samsung AM032MNQDCH/AA Service Manual

4-4-30 MCU branch part setup error – Repeated setup for the same address over 3 times
Outdoor unit display
Indoor unit display ×(Operation)
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.
Samsung Electronics
◑(Timer) ◑(Fan)
MCU BOX #0
OFF
4 2
Setting error
Branch A B
Indoor unit
4 2
◑(Filter) ×(Defrost)
MCU
address setup
MCU PCB
0
ON
Branch part use setup
2 2 5 6
Indoor unit address
C D E F
5 6
Troubleshooting
4-73