Mcu Branch Part Setup Error - Set As Being Used Without Connection To An Indoor Unit - Samsung AM036NXMDCR Service Manual

Troubleshooting
3-9 MCU branch part setup error – Set as being used without connection to an Indoor unit
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 MCU PIPE is set as being used, yet not connected to an indoor unit
Cause of
• Pipe is not installed to the indoor unit with assigned address on MCU
problem
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.
46
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
MCU BOX #1
OFF
4 4
Branch A B
Indoor unit
4
MCU
address setup
MCU PCB 0
ON
Branch part use setup
2 0 5 6
Indoor unit address
C D E
Cassette (4/Mini4 Way)
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
MCU address setup
MCU PCB 0
ON
Branch part use setup
2 1 5 6
Indoor unit address
C D E
2 5
F
Wall-mounted (NeoForte)
× × × ◑
F
F
F
6
Samsung Electronics
27℃
◑ ×