Mcu Branch Part Setup Error - Set As Being Used Without Connection To An Indoor Unit - Samsung AM072/096/120/144FXVAFH Service Manual

Troubleshooting
4-4-13 MCU branch part setup error – Set as being used without connection to an Indoor unit
Outdoor unit display
Operation Defrost
Indoor unit display
※ ● : ON ◑ : Flash × : OFF
Criteria • Occurs when MCU PIPE is set as being used, yet not connected to an indoor unit
Cause of problem
• Pipe is not installed to the indoor unit with assigned address on MCU
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.
4-44
Duct, Cassette (1/2 Way),Console, Celing
Timer Fan Filter/MPI Operation Defrost
× × ◑ ◑
×
MCU BOX #1
OFF
1 3
B
Branch A
Cassette (4/Mini4 Way)
Timer Filter
× ◑ ◑ ×
MCU PCB
1
ON
7 9 0 0
C D E F
0
Wall-mounted (NeoForte)
Operation Timer Turbo 24℃ 27℃
× × ◑ ◑
Samsung Electronics
×