Troubleshooting
4-26 Samsung Electronics
4-3-9 MCU branch part setup error – Repeated setup for the same address over 3 times
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.
Outdoor Unit PCB
Quantity of
Indoor Unit
Quantity of
MCU
Indoor Unit: 3 MCU: 1
Branch
Outdoor unit
display
Indoorunit
display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation Defrost Timer Fan Filter/MPI Operation Defrost Timer Filter Operation Timer Turbo
24℃ 27℃
××◑◑×
×◑◑×××
◑◑×
※ ●: ON ◑: Flash ×: OFF
Criteria • The same indoor unit address was setup more than 3 times in MCU
Cause of
problem
• MCU indoor unit address setting error
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