Mcu Branch Part Setup Error - Overlapping Indoor Unit Address Setup - Samsung AM036NXMDCR Service Manual

3-8 MCU branch part setup error – Overlapping Indoor unit Address setup
Outdoor unit
display
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost Timer Fan Filter/MPI Operation Defrost Timer Filter Operation Timer Turbo 24℃
Indoorunit
×
display
※ ●: ON ◑: Flash ×: OFF
Criteria
• Occurs when an indoor unit address setup switch in MCU has been overlapped
Cause of
• Repeated indoor unit address
problem
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.
Samsung Electronics
× ◑ ◑ ×
MCU BOX #0
OFF
4 2
Branch A B
MCU BOX #1
OFF
4 0
Branch A B
MCU BOX #1
1 3
B
Branch A
Cassette (4/Mini4 Way)
× ◑ ◑
MCU
address setup
MCU PCB 0
ON
Branch part use setup
2 0 5 6
Indoor unit address
C D E
MCU
address setup
MCU PCB 1
ON
Branch part use setup
1 2 5 7
Indoor unit address
C D E
MCU PCB 1
ON
OFF
7 9 0 0
C D E
0
Wall-mounted (NeoForte)
× × × ◑
F
F
F
Troubleshooting
27℃
◑ ×
45