Samsung AM072BXV Series Service Manual page 250

Piping Diagram
7-3 Functions (cont.)
7-3-2 Control (cont.)
7-3-2-4 Special operation modes (cont.)
▪ Refrigerant Flow
Heat pump
Outdoor Fan Motor 1 (OFM1)
2
7
Solenoid Valve -
Solenoid Valve -
4Way (V_4W)
4Way (V_4W2)
Pressure
Sensor -
1
High (PS_H)
Check Valve -
(CV_D2)
Discharge 1
(CV_D1)
Oil
Separator 1 (OS2)
(OS1)
Pressure Switch -
(PW_H2)
High 1 (PW_H1)
Thermistor -
Discharge
Thermistor - (T_D2)
pipe 1 (T_D1)
Compressor
Top 1 (T_CT1)
(T_CT2)
Compressor 1
Compressor 2
(COMP1)
(COMP2)
Solenoid
Solenoid Valve -
Valve -
EVI 2 (V_EVI2)
EVI 1 (V_EVI1)
Heat Recovery
Check Valve -
Main Cooling
Outdoor Fan Motor 1
(CV_MC)
Solenoid Valve -
Main Cooling
(V_MC)
Check Valve -
Heat Recovery
↑
(CV_HR)
↑
Solenoid Valve - Solenoid Valve -
4Way (V_4W) 4Way (V_4W2)
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 2 (OFM2)
Thermistor -
Ambient (T_A)
Thermistor -
Cond Out (T_CO)
Heat Exchanger - Main (HX_M)
Check
Valve -
3
EEV Bypass
(CV_E)
IPM Cooler 1 (IPMC1)
Thermistor -
Suction pipe (T_S)
IPM Cooler 2 (IPMC2)
8
Solenoid
Valve - EVI
Thermistor -
Bypass (V_EB)
EVI Out (T_EO)
Hot Gas
Bypass Valve
(V_HG)
Low
Pressure
Sensor
(LPS)
Accumulator
(AC)
Liquid pipe (T_L)
Solenoid Valve -
Accumlator oil Return (V_AR)
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 -
Electronic
EEV Bypass
Expansion
(CV_EB)
Valve -
Main (E_M)
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 -
Gas pipe (BV_G)
Electronic Expansion
Valve - Main (E_M)
Heat Exchanger -
Intercooler (HX_IC)
EVI In Temp.
Sensor
(T_EI)
Electronic Expansion
Valve - EVI (E_EVI)
Thermistor -
4
Ball Valve -
Liquid pipe (BV_L)
Ball Valve -
High pressure
Gas pipe
(BV_HG)
↑
Solenoid
Valve - ↑
Hot Gas
bypass 2
(V_HG2)
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 Temperature & pressure Gas
High Temperature & pressure Liquid
Low Temperature & pressure Gas
Low Temperature & pressure Liquid
HEAT FAN OFF
Outdoor Heat Exchanger (OHX)
HEAT FAN OFF
Outdoor Heat Exchanger (OHX)
HEAT FAN OFF
Outdoor Heat Exchanger (OHX)
OFF FAN OFF
Outdoor Heat Exchanger (OHX)
HEAT FAN OFF
6
5
Outdoor Heat Exchanger (OHX)
OFF FAN OFF
Outdoor Heat Exchanger (OHX)
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
FAN OFF
↑
HEAT
FAN ON
FAN OFF
HEAT
FAN OFF FAN ON
OFF
FAN OFF
HEAT
FAN OFF FAN ON
OFF
FAN OFF
244