Samsung Electronics
6-4
PCB Diagram and Parts List
Outdoor Unit (cont.)
MAIN PCB
1
2
3
4
5
6
①
#1~2 : Display the operation status on LED
#3 : Transmit the S/W inputs to MAIN
#4~5 : Transmit signals to the display
②
#1 : Transmit detected temperature outside
#3 : Transmit detected discharge temperature
#2, 4 : GND
③
#1~2 : Not used
#3 : Transmit detected COND temperature
#4 : GND
④
#1 : TXD_MAIN
#2 : RXD_MAIN
#3 : GND
#4 : DC5V
#5 : 12V
#6 : Fan relay
#7 : 4 way relay
⑤
#1~4 : Teceive EEV motion signal
#5~6 : 12V
⑥
#1 : 12V
#2 : GND
CN61(5PIN/WHT) : Display
CN51(4PIN/RED) : Temperature Sensor
CN50(4PIN/WHT) : Temperature Sensor
CN03(7PIN/WHT) : Inverter PCB
CN30(6PIN/WHT) : EEV
CN01(2PIN/BLU) : Transmitter