Mcu Branch Part Setup Error - Inconsecutive Connection With The Use Of 2 Branch Parts - Samsung AM072/096/120/144FXVAFH Service Manual

4-4-8 MCU branch part setup error – inconsecutive connection with the use of 2 branch parts
Outdoor unit display
Operation Defrost
Indoor unit display
※ ● : ON ◑ : Flash × : OFF
Criteria • When 2 branch parts are used for one indoor unit without connecting them consecutively.
Cause of problem • Branch part assembly error
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
Samsung Electronics
Duct, Cassette (1/2 Way),Console, Celing
Timer Fan Filter/MPI Operation Defrost
× × ◑ ◑
×
MCU BOX #0
MCU PCB
OFF
4 2 1
Setting error
Branch A B C
4 2
Cassette (4/Mini4 Way)
Timer Filter Operation Timer
× ◑ ◑ × ×
MCU
address setup
0
ON
Branch part use setup
2 5 6
Indoor unit address
D E F
5 6
Troubleshooting
Wall-mounted (NeoForte)
Turbo
24℃ 27℃
× ◑ ◑ ×
4-39