Mcu Branch Part Setup Error-Connect More Indoor Units Than What Is Actually Set Up In Mcu - Samsung AM080xXV Series Service Manual

Troubleshooting
4-3-15 MCU branch part setup error – Connect more Indoor units than what is actually set up in MCU
Outdoor unit
display
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost Timer Fan Filter/MPI Operation Defrost Timer Filter Operation Timer Turbo 24℃
Indoorunit
×
display
※ ●: ON ◑: Flash ×: OFF
Criteria • Occurs when the number of indoor unit installed exceeds that setting in MCU
Cause of
• Number of indoor units exceeds number of indoor units entered on MCU setting
problem
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.
Example of MCU indoor unit setting DIP switch error
•
ex) Indoor unit No.5 was connected to branch part C, but DIP switch No.3 (branch part C) is off.
Outdoor Unit PCB
Quantity of
Indoor
Indoor Unit: 4
4-36
× ◑ ◑ ×
Quantity of
MCU
MCU: 1
Cassette (4/Mini4 Way)
× ◑ ◑ ×
Branch
Wall-mounted (NeoForte)
× × ◑
◑
Samsung Electronics
27℃
×