Samsung AM072BXV Series, Service Manual

Page: 95 / 326

Troubleshooting
Samsung Electronics 89
4-3-9 MCU branch part setup error – Repeated setup for the same address over 3 times
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.
Outdoor Unit PBA
Quantity of
Indoor Unit
Quantity of
MCU
Indoor Unit: 3 MCU: 1
Branch
Outdoor unit
display
Indoorunit
display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation Defrost Timer Fan Filter/
MPI Operation Defrost Timer Filter Operation Timer Turbo 24
℃
27
℃
× × ◑ ◑ × × ◑ ◑ × × × ◑ ◑ ×
※ ●
: ON
◑
: Flash ×: OFF
Judgment
Method
• The same indoor unit address was setup more than 3 times in MCU
Cause of
problem
• MCU indoor unit address setting error
4-3 Appropriate Measures for Different Symptom (cont.)