Branch Selector Unit & Indoor Unit Operation Mode Detail - Daikin VRV-WIII RWEYQ72PTJU Service Manual

SiUS30-1301
1.4 Branch Selector Unit & Indoor Unit Operation Mode Detail
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<Indoor unit>
Electric
Name
symbol
Indoor unit fan M1F
Indoor electronic
Y1E
expansion valve
<Branch Selector unit>
Electric
Name
symbol
Electronic
expansion valve Y1E
(EVSC)
Electronic
expansion valve Y2E
(EVHS)
Electronic
expansion valve Y3E
(EVLS)
Electronic
expansion valve Y4E
(EVH)
Electronic
expansion valve Y5E
(EVL)
Function and Control
1: The switch for the Branch Selector unit is operated when pressure equalization control turns
ON after cooling/heating mode of other indoor unit is changed or on the timing of oil returns.
2: If 20RH: ON, depend on indoor control (200 pulse).
If 20RH: OFF, 0 pulse.
Thermostat ON Thermostat OFF
Remote
controller controller
setting
Normal
opening
degree
Cooling
Simultaneous
Only cooling
cooling/heating
0 pulse
480 pulse
(Fully opened)
480 pulse 480 pulse
(Fully opened) (Fully opened)
760 pulse
(Fully opened)
760 pulse 760 pulse
(Fully opened) (Fully opened)
Cooling
Stopping
Remote
OFF
setting
0 pulse 0 pulse
Heating
0 pulse 0 pulse
480 pulse
0 pulse
(Fully opened)
0 pulse
760 pulse
0 pulse
(Fully opened)
0 pulse
Heating
Thermostat ON Thermostat OFF
Remote
controller LL
setting
Normal
opening 192 pulse
degree
Function General
Stopping
OFF
192 pulse
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