Daikin RXYQ-TA Series Service Manual page 38

Refrigerant Flow for Each Operation Mode
3.1.2 Cooling Oil Return Operation
High temperature, high pressure, gas
High temperature, high pressure, liquid
Low temperature, low pressure
Stop valve (With service port
25
Fan ON
ON
Heat exchanger
Fan
EV: Normal
control
Filter Filter
Electronic expansion valve
Indoor unit
Thermostat ON
Double tube
heat exchanger
Filter
Electronic
expansion
Fusible
valve
plug
Pressure
regulating valve
Accumulator
Capillary tube Charge port
SV
Filter Solenoid valve Filter
φ
5/16 in. (7.9mm) flare connection)
Indoor unit operation
OFF
Fan OFF
Heat exchanger
Fan
EV: 224 pulses
Filter Filter
Electronic expansion valve
Indoor unit
Electronic
expansion valve
Heat sink
S1NPL
Low pressure
sensor
High pressure
switch
S1PH
Compressor
SiUS341615E
Fan LL
ON
Heat exchanger
Fan
EV: Normal
control
Filter Filter
Electronic expansion valve
Indoor unit
Thermostat OFF
Filter
Fan
Heat exchanger
M
Four way valve
High pressure
S1NPH
sensor
Check valve
Filter
Oil
separator
Filter
Solenoid valve
M1C
Capillary tube
C: 3D085567A
Refrigerant Circuit