Mcu Branch Part Setup Error - Inconsecutive Connection With The Use Of 2 Branch Parts - Samsung AM072FXVAFH series Service Manual

4-4-8 MCU branch part setup error – inconsecutive connection with the use of 2 branch parts
Outdoor unit display
Indoor unit display
Criteria
Cause of problem
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.
Samsung Electronics
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost Timer Fan
× × ◑ ◑
※ ● : ON ◑ : Flash ×: OFF
When 2 branch parts are used for one indoor unit without connecting them consecutively.
Branch part assembly error
MCU BOX #0
OFF
4 2
Branch A B
Indoor unit
4 2
Cassette (4/Mini4 Way)
Filter/MPI Operation Defrost Timer
× ◑ ◑
×
MCU
address setup
MCU PCB 0
ON
Branch part use setup
1 2 5 6
Setting error Indoor unit address
C D E
5
Wall-mounted (NeoForte)
Filter Operation Timer Turbo
× ×
× ◑
F
6
Troubleshooting
24℃ 27℃
◑ ×
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