Daikin RXYQ-TA Series Service Manual page 48

Refrigerant Flow for Each Operation Mode
3.3.4 Heating 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)
35
ON
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
Pressure
regulating valve
Low pressure
Accumulator
Capillary tube Charge port
SV
Filter Solenoid valve Filter
Indoor unit operation
Fan OFF OFF
Heat exchanger
Fan
EV: 0 pulse
Filter Filter
Electronic expansion valve
Indoor unit
Electronic
expansion valve
Filter
Heat sink
Check valve
S1NPL
Filter
sensor
High pressure
switch
S2PH
separator
Filter
Solenoid
Compressor
M2C
Capillary tube
SiUS341615E
ON
Fan ON
Heat exchanger
Fan
EV: 0 pulse
Filter Filter
Electronic expansion valve
Indoor unit
Thermostat OFF
Fan
M
Heat exchanger
Fan
M
Four way valve
High pressure
S1NPH
sensor
Check valve
Filter
Oil Oil
High pressure
separator
switch
S1PH
Filter
Solenoid
Compressor
valve valve
M1C
Capillary tube
C: 3D085568A
Refrigerant Circuit