Refrigerant Flow For Each Operation Mode; Rxq6/8/10/12/14A - Daikin RXQ12AHR Service Manual

SiAF341904E

3. Refrigerant Flow for Each Operation Mode

3.1

RXQ6/8/10/12/14A

Cooling Operation
High temperature, high pressure, gas
High temperature, high pressure, liquid
Low temperature, low pressure
Refrigerant
Auto charge
port
Part 2 Refrigerant Circuit
Fan ON
ON
Heat exchanger
Fan
EV: Normal
control
Filter Filter
Electronic expansion valve
Indoor unit
Thermostat ON
Stop valve (With service port on on-site piping side φ7.9mm flare connection)
Double tube
Heat exchanger
R6T
R5T
Electronic
expansion
valve
(Y2E)
Pressure
regulating
Electronic expansion
valve
(Y4E)
Filter
R3T
Filter
Refrigerant Flow for Each Operation Mode
Indoor unit operation
Fan OFF OFF
Heat exchanger
Fan
EV: 0 pulse
Filter Filter
Electronic expansion valve
Indoor unit
Check valve
ONLY FOR
Filter
RXQ14ARY1
M1F
Heat sink PCB
M2F
ONLY FOR
RXQ14ARY1
valve
(S1PH)
High pressure
switch
HPS
R21T
(S1NPL) Compressor
R8T
Low pressure
INV
sensor
M1C
Capillary tube
Fan ON
ON
Heat exchanger
Fan
EV: 0 pulse
Filter Filter
Electronic expansion valve
Indoor unit
Thermostat OFF
R4T
FAN
R1T
M
Heat exchanger
FAN
M
(S1NPH)
High pressure
SENPH
sensor
Check valve
Filter
Filter
Solenoid valve (Y3S)
C: 3D112173B
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