Samsung AM072/096/120/144FXVAFH, Service Manual

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Troubleshooting
Samsung Electronics 4-41
4-4-10 MCU branch part setup error – non-installed address setup
• Indoor unit, with the assigned address on MCU, not installed.
Criteria
Cause of problem
• If there is an indoor unit that is not installed among MCU registered indoor units
Outdoor unit display
Indoor unit display
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
ON
4 4 2 1 5 6
0
4
B C D E
1
F
6
MCU
address setup
Indoor unit
Indoor unit address
Branch part use setup
Branch A
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