Samsung AM038KXWDCH, Service Manual, Page: 190 / 295

P iping Diagra m
Sa m sung El ectronics 189
No Part Name Abbreviation Symbol Function
2 1
4W a y Va lv e
( So l enoid v a lv e -4W a y)
V _4W
It deter m ines the coo l ing / heating operation m ode.
(T he v a lv e signa l w hen the heating operation is ON )
22
Discharge T e m p. Sensor
(T her m istor - Discharge pipe )
T_ D
Measure the te m perature of the co m pressor discharge pipe.
It is m ain ly used to protect the co m pressor.
23
Suction T e m p. Sensor
(T her m istor - Suction pipe )
T_ S
Measure the te m perature of the co m pressor suction l ine.
It is used to deter m ine the suction superheat of the co m pressor.
2 4
Cond Out T e m p. Sensor
(T her m istor - Cond Out )
T_ CO
Measure the l i q uid pipe te m perature of the heat e x changer.
Used to enter in defrosting operation and escape j udg m ent.
25
E VI In T e m p. Sensor
(T her m istor -E VI In )
T_E I
Measure the te m perature of the intercoo l er in l et pipe (E VI EE V side ) .
It is used to deter m ine the superheat of the E VI In / Out.
26
E VI Out T e m p. Sensor
(T her m istor -E VI Out )
T_E O
Measure the te m perature of the intercoo l er out l et pipe (E VI EE V side ) .
It is used to deter m ine the superheat of the E VI In / Out.
27
L i q uid T ube T e m p. Sensor (T her m istor -
L i q uid pipe )
T_L
Measure the te m perature of the outdoor l i q uid pipe.
It is used to deter m ine the supercoo l ing.
2 8
Co m p. T op T e m p. Sensor
(T her m istor - Co m pressor T op )
T_ C T
T o m easure the surface te m perature of the co m pressor T op Co v er.
It is m ain ly used to protect the co m pressor.
2 9
A m bient T e m p. Sensor
(T her m istor - A m bient )
T_ A Measure the te m perature of the outdoor air.
30
W ater T e m p. Sensor
(T her m istor -W ater )
T_W W ater
- Cycle component Symbol and Function
( cont. )
7-1 Piping Diagram ( cont. )