Troubleshooting
4-66 Samsung Electronics
4-4-31 MCU branch part setup error – non-installed address setup
• Indoor unit, with the assigned address on MCU, not installed.
Criteria
Cause of problem
• If there is an indoor unit that is not installed among MCU registered indoor units
Outdoor unit display
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.
Indoor unit display
MCU BO X #0
MCU PCB
OFF
MCU Address Setup
ON
Indoor Unit Addr ess
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
×(Operation)
◑
(Timer)
◑
(Fan)
◑
(Filter)
×
(Defrost)