Troubleshooting
Samsung Electronics 357
4-4-33 MCU branch part setup error – non-installed address setup
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.
MCU BOX #0
MCU PCB
OFF
MCU address setup
ON
Indoor unit
Indoor unit address
Branch part use setup
4 4 2 1 5 6
0
Branch A
4
B
C D E
1
F
6
Outdoor unit display
Indoor unit display
Criteria
• If there is an indoor unit that is not installed among MCU registered indoor units
Cause of problem
• Indoor unit, with the assigned address on MCU, not installed.
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