Samsung AM022FN1DEH/TK Service Manual page 220

4-4-31 MCU branch part setup error – non-installed address setup
Outdoor unit display
Indoor unit display
Criteria
Cause of problem
1. How to check
Find an MCU that is composed as the following picture to carry out assembly of branch part again. After completing the re-setting,
press K3 button on the button to reset or turn it off to restart.
Samsung Electronics
◑(Timer) ◑(Fan)
×(Operation)
Indoor unit, with the assigned address on MCU, not installed.
MCU BOX #0
4
Branch A
Indoor unit
4
◑(Filter)
×(Defrost)
MCU address setup
MCU PCB
ON
OFF
4 2 1 5
Indoor unit address
B C D E
1
0
Branch part use setup
6
F
6
Troubleshooting
4-75