Samsung AVXCSH023/032/040CE Service Manual page 308

MAIN PCB(cont.)
CN901- TRANS OUTPUT
#1, #2: DC Power Source
#3: Not used
#4, #5: Comm. Power source
CN12-replay power
#1: 12V
#2: GND
CN100-For Developer
CN70-220V input
#1: L phase
#2: N phase
17 CN82- Balance Keeping Valve2
CN71- PMM Valve
21
CN75- EVI Valve
25
CN49- Temp. Sensor
29
#1: Outdoor Temperature Sensor
#2: GND
#3: SUMP Temperature Sensor
#4: GND
CN64- EVI EEV
33
#1, #2, #3, #4: Control signal
#5: 12V
37 CN99-Main/BLDC Connection
#1: 12V
#2: 5V
#3: GND
#4: IPM Fault Error Signal
#5: BLDC Fan Motor Control Signal
#6: Inrush Relay Signal
#7: Over Voltage Error Signal
#8: Motor Overheating Error signal
#9: Fan Motor counter rotation Error
Signal
#10: Fan RPM Error Signal
#11, #12, #13: Not used
Samsung Electronics
CN13- Relay Comm. 5V
#1: 5V
#2: Comm. Voltage 5V GND
CN92-SUB MICOM D/L
CN83-3 phase Detection part
#1: R phase input
#2: S phase input
#3: T phase input
CN76-CCH Control
#1: CCH 1 L phase
#2: CCH 1 N phase
#3: CCH 2 L phase
#4: CCH 2 N phase
18 CN80- Balance Keeping Valve3
CN73- 4 Way Valve
22
CN86- Liquid Valve
26
CN48-Temp. Sensor
30
#1: EVI IN Temperature Sensor
#2: GND
#3: EVI OUT Temperature Sensor
#4: GND
CN63- Main EEV
34
#1, #2, #3, #4: Control signal
#5, #6: 12V
CN31- Indoor/outdoor unit
Communication
#1: Comm. Signal F1
#2: Comm. Signal F2
CN91-MAIN MICOM D/L
OPT1- Cooling/Heating Switch
#1: Cooling
#2: GND
#3: Heating
CN75-CCH Control
#1: CCH 3 L phase
#2: CCH 3 N phase
#3: ACCUM CCH L phase
#4: ACCUM CCH N phase
19 CN 72- Compressor Control
#1: COMP1
#2: COMP2
#3: COMP3
#4: N phase
CN84- Main Cooling Valve
23
CN41- Low Pressure Sensor
27
#1: Not used
#2: Low Pressure Sensor
#3: GND
#4: 5V
CN47- Temp. Sensor
31
#1: Oil Valance Temperature Sensor
#2: GND
#3: Liquid Temperature Sensor
#4: GND
#5: Cond Out Temperature Sensor
#6: GND
CN65- HR EEV
35
#1, #2, #3, #4: Control signal
#5: 12V
PCB Diagram
CN32- Outdoor Units
Communication
#1: Comm. Signal OF1
#2: Comm. Signal OF2
CN10-Developer D/L
CN51-CT Sensor Input
#1: CT Input
#2: CT2 input
#3: CT3 input
#4: GND
CN81- Balance Keeping Valve1
16
20 CN74-Hot Gas Valve
CN85-Outdoor Unit EEV Valve
24
CN75- CCH Control
28
#1: High Pressure Sensor
#2: Not Used
#3: GND
#4: 5V
CN44- Temp. Sensor
32
#1: Comp 1. Output Temperature Sensor
#2: GND
#3: Comp 2. Output Temperature Sensor
#4: GND
#5: Comp 3. Output Temperature Sensor
#6: GND
#7: Suction Temperature Sensor
#8: GND
CN62- Main EEV
36
#1, #2, #3, #4: Control Signal
#5, #6: 12V
6-28