Setup Error For Mcu Branch Part - Setup Error For Mcu Quantity Used - Samsung AM072FXVAFH series Service Manual

Troubleshooting
4-4-11 Setup Error for MCU Branch part – Setup Error for MCU Quantity Used
Outdoor Unit Display
Operation Defrost
Indoor Unit Display
※ ● : ON ◑ : Flash ×: OFF
Judgment Method
Special Cause
1. Inspection Method : Check the Main PCB MCU quantity setting switch of the outdoor unit and check the installed MCU quantity matches.
Check whether each MCU PCB address switch was duplicated.
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.
Example of MCU quantity setting error
ex) PCB MCU setting quantity of outdoor unit = 2 / MCU installed Quantity = 3
ex) Two among three of MCU address was set to 0
4-42
Duct, Cassette (1/2 Way),Console, Celing
Timer Fan Filter/MPI Operation Defrost
× × ◑ ◑
Outdoor Unit PCB
Quantity of
Quantity of
Indoor Unit
MCU
Indoor Unit: - MCU: 2
Outdoor Unit PCB
Quantity of Quantity of
Indoor Unit MCU
Indoor Unit: - MCU: 3
Cassette (4/Mini4 Way)
Timer
× ◑ ◑
×
Address: 0
Address: 1
Address: 2
Wall-mounted (NeoForte)
Filter Operation Timer Turbo
× × × ◑
Samsung Electronics
24℃ 27℃
◑ ×