Mcu Branch Part Setup Error_Set As Being Used Without Connection To An Indoor Unit - Samsung AM080FX A Series Service Manual

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-13 MCU branch part setup error – Set as being used without connection to an Indoor unit
Outdoor unit
display
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost Timer Fan
Indoorunit
display
×
※ ●: ON ◑: Flash ×: OFF
Judgment
• Occurs when MCU PIPE is set as being used, yet not connected to an indoor unit
Method
Cause of
• Pipe is not installed to the indoor unit with assigned address on MCU
problem
1. How to check
Adjust the Dip switch that sets up the use of MCU branch part to 'Not-Used'. After completing resetting, press the outdoor unit's
K3 button to reset or turn off to restart.
Samsung Electronics
MCU BOX #0
OFF
4 2
Branch A B
Filter/
Operation Defrost Timer Filter Operation Timer Turbo 24℃
MPI
MCU BOX #1
× ◑ ◑ ×
OFF
4 0
Branch A B
MCU BOX #1
OFF
1 3
B
Branch A
MCU BOX #1
OFF
4 4
B
Branch A
Indoor unit
4
MCU
address setup
MCU PCB 0
ON
Branch part use setup
2 0 5 6
Indoor unit address
C D E F
Cassette (4/Mini4 Way)
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
0
MCU address setup
MCU PCB 0
ON
Branch part use setup
2 1 5 6
Indoor unit address
C D E F
2 5 6
Wall-mounted (NeoForte)
× × ◑ ◑
27℃
×
168