Samsung AM080*XV Series, Service Manual

Page: 150 / 277

T roub l eshooting
4- 30 Sa m sung El ectronics
4-3-13 MCU branch part setup error – Set as being used without connection to an Indoor unit
1 . H o w to chec k
Ad j ust the Dip s w itch that sets up the use of MCU branch part to ‘ Not - Used ' . After co m p l eting resetting , press the outdoor unit ' s
K 3 button to reset or turn off to restart.
MCU BOX #1
MCU PCB
OFF
ON
1 3 7 9 0 0
1
Br a n c h A B C D E
0
F
Outdoor unit
disp l a y
Indoorunit
disp l a y
Duct , Cassette (1/ 2 W a y), Conso l e , Ce l ing Cassette (4/ Mini 4 W a y) W a ll-m ounted ( NeoForte )
Operation Defrost T i m er Fan Fi l ter / M P I Operation Defrost T i m er Fi l ter Operation T i m er T urbo 2
4 ℃ 27 ℃
× × ◑ ◑ × × ◑ ◑ × × × ◑ ◑ ×
※ ● : ON ◑ : F l ash ×: OFF
Criteria • Occurs w hen MCU P I PE is set as being used , y et not connected to an indoor unit
Cause of
prob l e m
• P ipe is not insta ll ed to the indoor unit w ith assigned address on MCU