Mcu Branch Part Setup Error - Connect An Indoor Unit To A Branch Part Not Being Used - Samsung AM045NN4DEH Series Service Manual

4-4-37 MCU branch part setup error – Connect an Indoor unit to a branch part not being used
Outdoor unit display
Indoor unit display
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
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.
Samsung Electronics
OFF
4 0
Branch A B
MCU BOX #1
Operation
OFF
1 3
B
Branch A
MCU BOX #1
OFF
4 4
B
Branch A
Indoor unit
4
1 2 5 7
Indoor unit address
C D E F
1
MCU PCB
Timer
ON
7 9 0 0
C D E F
0
MCU address setup
0
MCU PCB
ON
Branch part use setup
2 1 5 6
Indoor unit address
C D E F
2 5 6
Troubleshooting
85