Mcu Branch Part Setup Error-Repeated Setup For The Same Address Over 3 Times - Samsung AM072FXVAFH series Service Manual

Troubleshooting
4-4-9 MCU branch part setup error – Repeated setup for the same address over 3 times
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.
Outdoor Unit PCB
Quantity of
Indoor Unit
Indoor Unit: 3
4-40
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost Timer Fan
× × ◑ ◑
※ ● : ON ◑ : Flash ×: OFF
The same indoor unit address was setup more than 3 times in MCU
MCU indoor unit address setting error
Quantity of
MCU
MCU: 1
Cassette (4/Mini4 Way)
Filter/MPI Operation Defrost Timer
× ◑ ◑
×
Branch A
Wall-mounted (NeoForte)
Filter Operation Timer Turbo
× × × ◑
Samsung Electronics
24℃ 27℃
◑ ×