Samsung AM072BXV Series Service Manual page 209

Piping Diagram
7-1 Piping Diagram (cont.)
■ Cycle component Symbol and Function (cont.)
No Part Name
MainCooling Valve
19
(Solenoid valve-Main Cooling)
Accumulator Oil Return Valve
20 (Solenoid valve-Accumulator Oil
Return)
4Way Valve
21
(Solenoid valve-4Way)
Discharge Temp. Sensor
22
(Thermistor-Discharge pipe)
Suction Temp. Sensor
23
(Thermistor-Suction pipe)
Cond Out Temp. Sensor
24
(Thermistor-Cond Out)
EVI In Temp. Sensor
25
(Thermistor-EVI In)
EVI Out Temp. Sensor
26
(Thermistor-EVI Out)
Liquid Tube Temp. Sensor
27
(Thermistor-Liquid pipe)
Comp. Top Temp. Sensor
28
(Thermistor-Compressor Top)
Ambient Temp. Sensor
29
(Thermistor-Ambient)
Samsung Electronics
Abbreviation Symbol
V_MC
V_AR
V_4W
T_D
T_S
T_CO
T_EI
T_EO
T_L
T_CT
T_A
Function
Opening the valve during cooling operation and sends
a high-pressure gas into the indoor unit for the heating
operation. (HR Only)
Opening the valve during operation and sends the oil which
accumulates in the lower liquid separator to the compressor.
It determines the cooling / heating operation mode.
(The valve signal when the heating operation is ON)
Measure the temperature of the compressor discharge pipe.
It is mainly used to protect the compressor.
Measure the temperature of the compressor suction line.
It is used to determine the suction superheat of the
compressor.
Measure the liquid pipe temperature of the heat exchanger.
Used to enter in defrosting operation and escape judgment.
Measure the temperature of the intercooler inlet pipe (EVI
EEV side). It is used to determine the superheat of the EVI
In / Out.
Measure the temperature of the intercooler outlet pipe (EVI
EEV side). It is used to determine the superheat of the EVI
In / Out.
Measure the temperature of the outdoor liquid pipe.
It is used to determine the supercooling.
To measure the surface temperature of the compressor Top
Cover. It is mainly used to protect the compressor.
Measure the temperature of the outdoor air.
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