Daikin RXYQ-TA Series Service Manual page 46

Refrigerant Flow for Each Operation Mode
3.3.2 Cooling Oil Return Operation
High temperature, high pressure, gas
High temperature, high pressure, liquid
Low temperature, low pressure
Stop valve (With service port φ5/16 in. (7.9mm) flare connection)
33
Fan ON
Heat exchanger
Fan
EV: Normal
control
Filter Filter
Electronic expansion valve
Indoor unit
Thermostat ON
Double tube
heat exchanger
Filter
Electronic
expansion valve
Fusible
plug
regulating valve
Accumulator
Capillary tube Charge port
SV
Solenoid valve
Filter Filter
Indoor unit operation
Fan OFF
OFF
ON
Heat exchanger
Fan
EV: 224 pulses
Filter Filter
Electronic expansion valve
Indoor unit
Electronic
expansion valve
Heat sink
Pressure
S1NPL
Low pressure
sensor
High pressure
switch
S2PH
Compressor
M2C
Fan ON
ON
Heat exchanger
Fan
EV: Normal
control
Filter Filter
Electronic expansion valve
Indoor unit
Thermostat OFF
Filter
Fan
M
Heat exchanger
Fan
M
Four way valve
High pressure
S1NPH
sensor
Check valve Check valve
Filter Filter
Oil
Oil separator
separator
Filter Filter
Solenoid Solenoid
Compressor
valve valve
Capillary tube
Capillary tube
Refrigerant Circuit
SiUS341615E
High pressure
switch
S1PH
M1C
C: 3D085568A