Samsung AHU Series Service Manual page 63

System air conditioner
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PCB Diagram and Part List
AC054KXADCH
8
2
Reactor-A1/B1
#Reactor-A1 : WHT
#Reactor-A2 : BLK
#Reactor-B1 : WHT
#Reactor-B2 : BLK
CN901 – FAN1
#1 : DC310V
#2 : N.C
#1 : DC310V
#3 : GND
#4 : DV15V
#3 : GND
#5 : FAN RPM
#6 : FAN RPM
#5 : FAN RPM
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5-8
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1
4
Reactor-A2/B2
CN351 - Main COMM
#1 : RXD
#2 : TXD
#3 : GND
#4 : DV5V
#5 : DV12V
#6 : INV, SMPS SIGNAL
CN911 – FAN2
CN401 – Compressor
#2 : N.C
#1 : Compressor U-phase(RED)
#4 : DV15V
#2 : Compressor V-phase(BLU)
#6 : FAN RPM
#3 : Compressor W-phase(YEL)
3
7
#1 : RXD_INV
#2 : TXD_INV
#3 : BOOT_INV
#4 : TDO_INV
#5 : TCK_INV
#6 : TDI_INV
#7 : TMS_INV
#8 : nTRST
#9 : GND
#10~#11: 5V
#14 #18 #19 : ENC
#17 : GND
#20 : SUB
#1 : L-Phase/BRN
#2 :N-Phase/SKY
6
5
CN551 – Downloader
L, N- 220V Power
Samsung Electronics

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