Troubleshooting
Samsung Electronics 4-73
4-4-29 MCU branch part setup error – inconsecutive connection with the use of 2 branch parts
t Branch part assembly error
Criteria
Cause of problem
t 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)
×
(Defr ost)
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