Mcu Branch Part Setup Error - Inconsecutive Connection With The Use Of 2 Branch Parts - Samsung AM007FN1DCH/AA Service Manual

4-4-29 MCU branch part setup error – inconsecutive connection with the use of 2 branch parts
Outdoor unit display
Indoor unit display
Criteria
Cause of problem
1. How to check
Find an MCU that is composed as the following picture to carry out assembly of branch part again. After completing the re-setting,
press K3 button on the button to reset or turn it off to restart.
Samsung Electronics
×(Operation) ◑(Timer)
• When 2 branch parts are used for one indoor unit without connecting them consecutively.
• Branch part assembly error
MCU BOX #0
OFF
4 2
Branch A B
Indoor unit
4 2
◑(Fan) ◑(Filter) ×(Defrost)
MCU
address setup
MCU PCB
0
ON
Branch part use setup
1 2 5 6
Setting error Indoor unit address
C D E
5
F
6
Troubleshooting
4-63