Samsung AM072BXV Series - MCU Branch Part Setup Error - Overlapping Indoor Unit Address Setup

Samsung Electronics 92
Troubleshooting
4-3-12 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.

MCU BOX #0
MCU PCB
OFF
MCU
address setup
ON
Indoor unit address
Branch part use setup
4 2 2 0 5 6
0
Branch A B C D E F
MCU BOX #1
MCU PCB
OFF
MCU
address setup
ON
Indoor unit address
Branch part use setup
4 0 1 2 5 7
1
Branch A B C D E F
MCU BOX #1
MCU PCB
OFF
ON
1 3 7 9 0 0
1
Branch A B C D E
0
F
MCU BOX #1
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
5
F
62
Outdoor unit
display
Indoorunit
display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation Defrost Timer Fan
Filter/
MPI
Operation Defrost Timer Filter Operation Timer Turbo 24℃ 27℃
× × ◑ ◑ × × ◑ ◑ × × × ◑ ◑ ×
※ ● : ON ◑: Flash ×: OFF
Judgment
Method
• Occurs when an indoor unit address setup switch in MCU has been overlapped
Cause of
problem
• Repeated indoor unit address
4-3 Appropriate Measures for Different Symptom (cont.)