Setup Error For Mcu Branch Part - Setup Error For Mcu Quantity Used - Samsung AM017HN1DEH/EU Service Manual

Troubleshooting
4-4-34 Setup Error for MCU Branch part – Setup Error for MCU Quantity Used
Outdoor unit display
Indoor unit display
• Occurs when the quantity of MCU is incorrectly set by the outdoor unit.
Criteria
• Occurs when same addresses are found when two or more MCU are connected.
Cause of problem • Outdoor unit MCU setup and same address errors when connecting two or more MCUs .
1. Inspection Method : Re-check the MCU quantity setup switch from the outdoor unit.
Check for overlaps in each MCU address setup switch.
To use, reset by pressing the K3 button of the outdoor unit after the reset is completed, or reset after turning off
the power and then turn it on again.
Indoor
Unit
Branch Sphere A
Indoor
Unit
358
Outdoor Unit
PCB
Setup for Indoor
MCU Address Setup
MCU BOX #0
MCU PCB
ON
OFF
4 4 2 1 5
Indoor Unit Address
Branch Sphere A B C D E
4 5
Outdoor Unit
PCB
Setup for Indoor
Quantity Used
MCU Address Setup
MCU BOX #0
MCU PCB
ON
OFF
4 4 2 1 5
Indoor Unit Address
B C D E
4 5
5 1 1
MCU Address
Quantity Used Setup
MCU BOX #1
0
Setup for Using
OFF
Branch Sphere
6 1 3
F Branch Sphere A B
6
5 1 2
MCU Address
Setup
MCU BOX #1
MCU PCB
0
Setup for Using
OFF
Branch Sphere
6 1 3
F Branch Sphere A B
6
MCU PCB
1
ON
7 9 0 0
C D E F
7 0
1
ON
7 9 0 0
C D E F
7 0
Samsung Electronics