Daikin RXYQ-TA Series Service Manual page 40

Refrigerant Flow for Each Operation Mode
3.1.4 Heating operation
High temperature, high pressure, gas
High temperature, high pressure, liquid
Low temperature, low pressure
Stop valve (With service port
27
Fan ON
ON Fan OFF
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
Low pressure
Accumulator
Capillary tube Charge port
SV
Filter Solenoid valve Filter
φ
5/16 in. (7.9mm) flare connection)
Indoor unit operation
OFF
Heat exchanger
Fan
EV: 0 pulse
Filter Filter
Electronic expansion valve
Indoor unit
Electronic
expansion valve
Filter
Heat sink
S1NPL
sensor
High pressure
switch
S1PH
Compressor
M1C
SiUS341615E
Fan ON
ON
Heat exchanger
Fan
EV: 0 pulse
Filter Filter
Electronic expansion valve
Indoor unit
Thermostat OFF
Fan
Heat exchanger
M
Four way valve
High pressure
S1NPH
sensor
Check valve
Filter
Oil
separator
Filter
Solenoid valve
Capillary tube
C: 3D085567A
Refrigerant Circuit