Troubleshooting
Samsung Electronics
4-59
4-4-33 MCU branch part setup error – Overlapping Indoor unit Address setup
1. How to check
Check the setup switch for the number of indoor units in MCU
After completing resetting, press the outdoor unit's K3 button to reset or turn off to restart.
MC
U
BO
X
#
0
MCU
PCB
O
FF
MC
U
address
set
u
p
ON
I
ndoor
u
nit
address
Bran
c
h
part
u
se
set
u
p
4
2
2
0
5
6
0
Bran
c
h
A
B
C
D
E
F
MC
U
BO
X
#
1
MCU
PCB
O
FF
MC
U
address
set
u
p
ON
I
ndoor
u
nit
address
Bran
c
h
part
u
se
set
u
p
4
0
1
2
5
7
1
Bran
c
h
A
B
C
D
E
F
t3FQFBUFEJOEPPSVOJU
address
Criteria
Cause of problem
t0DDVSTXIFOBOJOEPPSVOJUBEESFTTTFUVQTXJUDIJO.$6IBTCFFOPWFSMBQQFE
Outdoor unit display
Indoor unit display
×(Operation)
◑
(Timer)
◑
(Fan)
◑
(Filter) ×(Defrost)
