Troubleshooting
Samsung Electronics 4-31
4-3-14 MCU branch part setup error – Connect an Indoor unit to a branch part not being used
1. How to check
Check the actual use of the branch part. If it is used, turn on the Dip switch for branch part setup. After completing resetting, press
the outdoor unit's K3 button to reset or turn off to restart.
MCU BOX #1
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
5
F
62
Outdoor unit
display
Indoorunit
display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoF orte)
Operation Defrost Timer F an F ilter/MPI Operation Defrost Timer Filter Operation Timer Turbo
24℃ 27℃
××◑◑×
×◑◑×××◑
◑×
※ ●: ON ◑: Flash ×: OFF
Criteria • Occurs when MCU PIPE is turned off, yet an indoor unit is register ed
Cause of
problem
• Indoor unit connection to the unused branch part
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