Troubleshooting
4-56
Samsung Electronics
4-4-30 MCU branch part setup error – Repeated setup for the same address over 3 times
t
MCU indoor unit address setting error
Criteria
Cause of problem
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The same indoor unit address was setup more than 3 times in MCU
Outdoor unit display
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.
Indoor unit display
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
×(Operation)
◑
(Timer)
◑
(Fan)
◑
(Filter) ×(Defrost)
