Samsung AHU Series Service Manual page 59

PCB Diagram and Part List
①
CN030 : 4WAY VALVE
#1-#3 : AC220V
⑤
CN701 : EEV
#1~#5 : EEV SIGNAL
#6 : DC12V
⑨
CN901 : BLDC MOTOR
#1: DV310V
#3: GND
#4: DC15V
#5: FAN̲PWM
#6: FAN̲Feedback
5-4
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② ③
CN951 : SIGNAL TO SUB PCB
#1~#28 : SIGNAL TO SUB PCB #1~#2 : OLP THERMISTOR
⑥ ⑦
CN302:Communication(COM1)
#1 : COM1(F1) #1~#2 : OUTDOOR THERMISTOR
#2 : COM2(F2) #3~#4 : DISCHARGE THERMISTOR
#5~#6 : COND THERMISTOR
⑩ ⑪
CN551: Downloader
#1~#10 : Download #1 : COMP U-Phase
#2 : COMP V-Phase
#3 : COMP W-Phase
④
CN252 : THERMISTOR CN851:S-NET Communication
#1 : DC12V
#2 : RXD
#3 : TXD
#4 : GND
⑧
CN251 : THERMISTOR CN201 : Downloader
#1~#10 : Download
⑫
CN451 : COMP POWER CN051 : Reactor
#1~#2 : Reactor
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