Samsung AM036NXMDCR - MCU Branch Part Setup Error - Set as Being Used Without Connection to an Indoor Unit

Troubleshooting
46
Samsung Electronics
3-9 MCU branch part setup error – Set as being used without connection to an Indoor unit
1. How to check
Adjust the Dip switch that sets up the use of MCU branch part to ‘Not-Used'. After completing resetting, press the outdoor unit's
K3 button to reset or turn off to restart.
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
Criteria
• Occurs when MCU PIPE is set as being used, yet not connected to an indoor unit
Cause of
problem
• Pipe is not installed to the indoor unit with assigned address on MCU