Troubleshooting
4-74 Samsung Electronics
4-4-31 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 BO X #0
MCU PCB
OFF
MCU Address Setup
ON
Indoor Unit Address
Setup for Using
Branch Sphere
4 4 2 1 5 6
0
Branch Sphere A
4
B
C D E
1
F
6
Indoor
Unit
Outdoor unit display
Indoor unit display
×
(Operation)
◑
(Timer)
◑
(Fan)
◑
(Filter)
×
(Defrost)
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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