Samsung AC052FCADEH - PCB Diagram; Indoor Unit PCB Diagram

5-1 Samsung Electronics
Main power input Float switch
BLDC fan
Earth wire
①
1(L):Phase L
2(N):Phase N
②
#1:DC310V
#2:Not used
#3:AGND
#4:DC15V
#5:FAN RPM
#6:RPM FEEDBACK
③
#1:GND
④
#1:Float_SW
#2:GND
⑤
#1:EVA IN temperature sensor
#2,4,6:GND
#3:EVA Out temperature sensor
#5:EVA discharge
⑥
#1:Room temperature sensor
#2:GND
⑦
S/W download
⑧
#1:DC12V
#2-5: LED control signal
#6: REMOCON signal out
#7,8: Not used
#9: REMOCON_INT
#10:GND
#11:Vcc
⑨
#1:DC12V
#2:VENT_OUT
⑩
#1:DC12V
#2-5: Louver control signal
#6: DC12V
#7-10: :Louver control signal
⑪
#1,2:GND
#3:SPI CONTROL
#4:Not Used
⑫
#1:DC12V
#2:DRAIN_PUMP_OUT
⑬
#1:DC12V
#2:Com4_TXD
#3:Com4_RXD
#4:Human sensor reset
#5:GND
⑭
#1,3:DC12V
#2:Error_CHK_OUT
#4:Comp_CHK_OUT
⑮
#1:EXT_CTRL
#2:GND
⑯
F3-F4:Com2
V1-V2:DV12V
F1-F2:Com1
5. PCB Diagram
5-1 PCB Diagram
5-1-1 Indoor Unit
2
1
4
5
3
6
14
13
8
7
10
11
9
13
12
15
16
Eva in/out sensor Panel display
Room temperature
S/W download
VENT
Drain Pump
Panel flaps
SPI
Human Sensor COM1,COM2,V1,V2
External
External