Samsung AM280FNHDEH/TK - Page 225

Troubleshooting
4-80 Samsung Electronics
4-4-36 MCU branch part setup error – Connect more Indoor units than what is actually set up in MCU
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Criteria
Cause of problem
t0DDVSTXIFOUIFOVNCFSPGJOEPPSVOJUTJOTUBMMFEFYDFFETUIBUSFHJTUFSFEJO.$6
Outdoor unit display
1. How to check
Check the number of indoor units connected to MCU then readjust the switch for the number of units
After completing resetting, press the outdoor unit's K3 button to
reset or turn off to restart.
Indoor unit display
MCU BOX #0
Outdoor unit
PCB
MCU PCB
OFF
MCU address setup
Indoor number setup MCU number setup
ON
Indoor unit address
Branch part use setup
1 2 2 1 8
6 1
6
0
Branch A
1
B
2
C
D E
8
F
6
MCU BOX #1
MCU PCB
OFF
ON
1 3 7 9 0 0
1
Branch A B D E
07
F
2
C
×(Operation)
◑
(Timer)
◑
(Fan)
◑
(Filter)
×
(Defr ost)