Samsung AM072BXV Series Service Manual page 255

Piping Diagram
7-3 Functions (cont.)
7-3-2 Control (cont.)
7-3-2-4 Special operation modes (cont.)
▪ Refrigerant Flow
Heat Recovery - Cooling
Check Valve -
Main Cooling
(CV_MC)
Solenoid Valve -
Main Cooling
(V_MC)
Check Valve -
Heat Recovery ↑
(CV_HR)
Solenoid Valve -
4Way (V_4W)
Pressure Sensor -
High (PS_H)
Solenoid Valve -
Hot Gas bypass (V_HG)
Check Valve -
Discharge 1
(CV_D2)
(CV_D1)
Oil Separator 1
(OS2)
(OS1)
Pressure
Switch - ↑ ↑
(PW_H2)
High 1
(PW_H1)
Thermistor -
(T_D2)
Discharge
pipe 1 (T_D1)
Thermistor -
Compressor
(T_CT2)
Top 1
(T_CT1)
Compressor 1
(COMP2)
(COMP1)
Solenoid
Valve -
(V_EVI2)
EVI 1(V_EVI1)
Heat Recovery - Heating
Check Valve -
Main Cooling
(CV_MC)
Solenoid Valve -
Main Cooling
(V_MC)
Check Valve -
↑
Heat Recovery
(CV_HR)
Solenoid Valve -
4Way (V_4W)
Pressure Sensor -
High (PS_H)
Solenoid Valve -
Hot Gas bypass (V_HG)
Check Valve -
Discharge 1
(CV_D2)
(CV_D1)
Oil Separator 1
(OS2)
(OS1)
Pressure
Switch - ↑ ↑
(PW_H2)
High 1
(PW_H1)
Thermistor -
(T_D2)
Discharge
pipe 1 (T_D1)
Thermistor -
Compressor
(T_CT2)
Top 1
(T_CT1)
Compressor 1
(COMP2)
(COMP1)
Solenoid
Valve -
(V_EVI2)
EVI 1(V_EVI1)
Samsung Electronics
Outdoor Fan Motor 1 Outdoor Fan Motor 2
(OFM1) (OFM2)
Thermistor - Ambient (T_A)
Thermistor -
Cond Out (T_CO)
Heat Exchanger - Main (HX_M)
Solenoid Valve -
Main EEV (V_ME)
Thermistor - Suction pipe (T_S)
Check Valve -
EEV Bypass
(CV_EB)
Solenoid Valve -
4Way (V_4W2)
Solenoid Valve -
Thermistor -
EVI Bypass
Suction pipe 2 (T_S2)
Thermistor -
(V_EB)
EVI Out (T_EO)
Accumulator
(AC)
Pressure Sensor -
Low (PS_L)
Solenoid Valve -
Accumulator oil Return (V_AR)
Outdoor Fan Motor 1 Outdoor Fan Motor 2
(OFM1) (OFM2)
Thermistor - Ambient (T_A)
Thermistor -
Cond Out (T_CO)
Heat Exchanger - Main (HX_M)
Solenoid Valve -
Main EEV (V_ME)
Thermistor - Suction pipe (T_S)
Check Valve -
EEV Bypass
(CV_EB)
Solenoid Valve -
4Way (V_4W2)
Solenoid Valve -
Thermistor -
EVI Bypass
Suction pipe 2 (T_S2)
Thermistor -
(V_EB)
EVI Out (T_EO)
Accumulator
(AC)
Pressure Sensor -
Low (PS_L)
Solenoid Valve -
Accumulator oil Return (V_AR)
Ball Valve -
High pressure
Gas pipe
(BV_HG)
Solenoid
Valve -
Hot Gas
bypass 2
Electronic
Expansion (V_HG2)
Valve -
Main (E_M)
IPM Cooler 1
(IPMC1)
↑
IPM Cooler 2
Ball Valve -
(IPMC2)
Low pressure
Gas pipe
(BV_LG)
Heat Exchanger -
Intercooler (HX_IC)
Thermistor -
EVI In (T_EI)
Electronic
Expansion
Valve -
EVI (E_EVI)
Thermistor -
Liquid pipe (T_L)
Ball Valve -
Liquid pipe (BV_L)
Ball Valve -
High pressure
Gas pipe
(BV_HG)
Solenoid
Valve -
Hot Gas
Electronic bypass 2 ↑
Expansion (V_HG2)
Valve -
Main (E_M)
IPM Cooler 1
(IPMC1)
↑
IPM Cooler 2
Ball Valve -
(IPMC2)
Low pressure
Gas pipe
(BV_LG)
Heat Exchanger -
Intercooler (HX_IC)
Thermistor -
EVI In (T_EI)
Electronic
Expansion
Valve -
EVI (E_EVI) ↑
Thermistor -
Liquid pipe (T_L)
Ball Valve -
Liquid pipe (BV_L)
High Temper atur e & pr essur e Gas
High Temper atur e & pr essur e Liquid
Low Temper atur e & pr essur e Gas
Low Temper atur e & pr essur e Liquid
COOL
FAN ON
↑
COOL
FAN ON
COOL
FAN ON
OFF
FAN OFF
COOL
FAN ON
OFF
FAN OFF
High Temper atur e & pr essur e Gas
High Temper atur e & pr essur e Liquid
Low Temper atur e & pr essur e Gas
Low Temper atur e & pr essur e Liquid
HEAT
FAN ON
HEAT
FAN ON
HEAT
FAN ON
OFF
FAN OFF
HEAT
FAN ON
OFF
FAN OFF
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