Troubleshooting
4-74
Samsung Electronics
4-4-31 MCU branch part setup error – non-installed address setup
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.
MC
U
BOX
#0
MC
U
PCB
O
FF
MC
U
Address
Set
u
p
ON
I
ndoor
U
nit
Address
Set
u
p
for
U
sing
Branch
Sphere
4
4
2
1
5
6
0
Branch
Sphere
A
4
B
C
D
E
1
F
6
I
ndoor
U
nit
Outdoor unit display
Indoor unit display
×(Operation)
◑
(Timer)
◑
(Fan)
◑
(Filter) ×(Defrost)
Criteria
• If there is an indoor unit that is not installed among MCU registered indoor units
Cause of problem
• Indoor unit, with the assigned address on MCU, not installed.
