Mcu Branch Part Setup Error-Overlapping Indoor Unit Address Setup - Samsung AM080FX A Series Service Manual

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-12 MCU branch part setup error – Overlapping Indoor unit Address setup
Outdoor unit
display
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost Timer Fan
Indoorunit
display
×
※ ●: ON ◑: Flash ×: OFF
Judgment
• Occurs when an indoor unit address setup switch in MCU has been overlapped
Method
Cause of
• Repeated indoor unit address
problem
1. How to check
Check the setup switch for the number of indoor units in MCU
After completing resetting, press the outdoor unit's K3 button to reset or turn off to restart.
Samsung Electronics
Filter/
Operation Defrost Timer Filter Operation Timer Turbo 24℃
MPI
× ◑ ◑ ×
MCU BOX #0
OFF
4 2
Branch A B
MCU BOX #1
OFF
4 0
Branch A B
MCU BOX #1
OFF
1 3
B
Branch A
Cassette (4/Mini4 Way)
× ◑ ◑ ×
MCU
address setup
MCU PCB 0
ON
Branch part use setup
2 0 5 6
Indoor unit address
C D E F
MCU
address setup
MCU PCB 1
ON
Branch part use setup
1 2 5 7
Indoor unit address
C D E F
MCU PCB 1
ON
7 9 0 0
C D E F
Wall-mounted (NeoForte)
× × ◑ ◑
27℃
×
167