Normal Operation - Daikin VRV II-Q RQYQ8-48PY1B Service Manual

Detailed Control Functions
2.4

Normal Operation

2.4.1 List of Functions in Normal Operation
Part Name
Compressor
Outdoor unit fan
Four way valve
Electronic expansion
valve (Main)
Electronic expansion
valve (Main 2)
Electronic expansion
valve (Subcooling)
Solenoid valve (Hot
gas)
Solenoid valve
(Receiver gas vent)
Solenoid valve (Circuit
of oil return)
Solenoid valve (Close
liquid pipe for stopped
outdoor unit)
Solenoid valve (Main
electronic expansion
valve bypass)
Solenoid valve
(Refrigerant regulator
gas vent pipe)
Solenoid valve
(Refrigerant regulator
liquid pipe)
Solenoid valve
(Refrigerant regulator
gas pipe)
Solenoid valve
(Refrigerant regulator
liquid outlet)
Solenoid valve
(Receiver liquid level)
Solenoid valve (Mixing
unit inlet)
Solenoid valve (Bypass)
Solenoid valve (Oil
regulator outlet)
Indoor unit fan
Indoor unit electronic
expansion valve
46
Electric Symbol
RQYQ8P PQYQ10·12P
M1C M1C
– M2C
– –
M1F M1F
Y3S Y3S
Y1E Y1E
– –
Y2E Y2E
Y1S Y1S
Y8S Y8S
Y5S Y5S
Y6S Y6S
Y10S Y10S
Y11S Y11S
Y12S Y12S
Y13S Y13S
Y14S Y14S
Y7S Y7S
Y4S Y4S
Y2S Y2S
Y9S Y9S
M1F M1F
Y1E Y1E
Normal Cooling
PQYQ14·16P
M1C
M2C PI Control
M3C
Depends on the
M1F, M2F mode of the cooling
heat exchanger
Y3S OFF
Y1E
2000 pls
Y2E
Depends on the
control of the
Y3E
electronic expansion
valve
Y1S OFF
Y8S OFF
Y5S ON
Y6S OFF
– ON
Y10S OFF
Y11S OFF
Y12S OFF
Y13S OFF
Y7S OFF
Y4S OFF
Y2S OFF
Y9S ON
Depends on the
M1F
indoor unit
Depends on the
Y1E
indoor unit
SiBE341027
Normal Heating
PI Control
Depends on the
mode of the cooling
heat exchanger
ON
Depends on the
control of the
electronic expansion
valve
0 pls
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
Depends on the
indoor unit
Depends on the
indoor unit
Function