Troubleshooting
Samsung Electronics
81
4-4-33 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.
MCU BOX #0
MCU PCB
OFF
MCU address setup
ON
Indoor unit
Indoor unit address
Branch part use setup
4
4
2
1
5
6
0
Branch A
4
B
C
D
E
1
F
6
MCU BOX #0
Outdoorunit
PCB
MCU PCB
OFF
MCU address setup
ON
Indoor unit
Indoor unit address
Branch part use setup
4
4
2
1
5
5
1
6
0
Branch A
4
B
C
D
E
5
F
6
MCU BOX #1
MCU PCB
OFF
ON
1
3
7
9
0
0
1
Branch A
B
D
E
0
7
F
1
MCU BOX #0
Outdoorunit
PCB
MCU PCB
OFF
MCU address setup
Indoor number setup MCU number setup
Indoor unmber setup MCU unmber setup
ON
Indoor unit
Indoor unit address
Branch part use setup
4
4
2
1
5
5
1
6
0
Branch A
4
B
C
D
E
5
F
6
MCU BOX #1
MCU PCB
OFF
ON
1
3
7
9
0
0
1
Branch A
B
D
E
0
7
F
2
C
C
Outdoor unit display
Indoor unit display
Operation
Timer
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.
