Samsung AM022FN1DEH/TK Service Manual page 223

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.
4-78
×(Operation) ◑(Timer) ◑(Fan)
MCU BOX #1
1
B
Branch A
◑(Filter) ×(Defrost)
address on MCU
MCU PCB
1
ON
OFF
3 7 9 0 0
C D E
0
F
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