Troubleshooting
4-20 Samsung Electronics
4-3-11 MCU branch part setup error – Connect an Indoor unit to a branch part not being used
• Indoor unit connection to the unused branch part
Criteria
Cause of problem
• Occurs when MCU PIPE is turned off, yet an indoor unit is registered
Outdoor unit display
Indoor unit display
1. How to check
Check the actual use of the branch part. If it is used, turn on the Dip switch for branch part setup. 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
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