Troubleshooting
Samsung Electronics
4-55
4-4-29 MCU branch part setup error – inconsecutive connection with the use of 2 branch parts
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Branch part assembly error
Criteria
Cause of problem
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When 2 branch parts are used for one indoor unit without connecting them consecutively.
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
1
2
5
6
0
Branch
A
4
B
2
C
D
E
5
F
6
×(Operation)
◑
(Timer)
◑
(Fan)
◑
(Filter) ×(Defrost)
