Mcu Branch Part Setup Error - Inconsecutive Connection With The Use Of 2 Branch Parts - Samsung AM072BXV Series Service Manual

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-8 MCU branch part setup error – inconsecutive connection with the use of 2 branch parts
Outdoor unit
display
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost Timer Fan
Indoorunit
display
×
※ ● : ON ◑: Flash ×: OFF
Judgment
• When 2 branch parts are used for one indoor unit without connecting them consecutively.
Method
Cause of
• Branch part assembly error
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
Filter/
MPI
× ◑ ◑ ×
MCU BOX #0
OFF
4 2
Branch A B
Indoor unit
4 2
MCU BOX #0
4
Branch A
Cassette (4/Mini4 Way)
Operation Defrost Timer Filter Operation Timer Turbo 24℃
× ◑ ◑
MCU
address setup
MCU PCB 0
ON
Branch part use setup
1 2 5 6
Setting error Indoor unit address
C D E
5
address setup
MCU PCB
ON
OFF
2 2 2 5
Setting error Indoor unit address
B C D E
Wall-mounted (NeoForte)
× × × ◑
F
6
MCU
0
Branch part use setup
6
F
27℃
◑ ×
88