Mcu Branch Part Setup Error - Set As Being Used Without Connection To An Indoor Unit - Samsung AM007FN1DCH/AA Service Manual

Troubleshooting
4-4-34 MCU branch part setup error – Set as being used without connection to an Indoor unit
Outdoor unit display
Indoor unit display
Criteria
Cause of 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.
4-68
×(Operation) ◑(Timer) ◑(Fan)
• Occurs when MCU PIPE is set as being used, yet not connected to an indoor unit
• Pipe is not installed to the indoor unit with assigned address on MCU
MCU BOX #1
1
Branch A B
◑(Filter) ×(Defrost)
MCU PCB
1
ON
OFF
3 7 9 0 0
C D E
0
F
Samsung Electronics