Daikin VRV EMERION RXYQ-AATJA, Руководство по обслуживанию, Страница: 124 / 429

Special Control SiUS342303E
117 Part 4 Functions and Control
7.2.2 Oil Return Operation in Heating Operation
Part name
Electric
symbol
Function of functional part
Compressor motor
M1C, M2C
RXYQ72AA: 127.3 rps
RXYQ96/120AA: 125.4 rps + 140.0 rps
RXYQ144/168AA: 85.2 rps + 114.9 rps
RXYQ192/216/240AA: 135.0 rps + 140.0 rps
Fan motor
M1F, M2F
With high pressure
OFF ↔ Step 4 ↔ Step 6
Electronic expansion valve (Heat exchanger main) Y1E 100%
Electronic expansion valve (Heat exchanger left) Y6E
Electronic expansion valve (Refrigerant cooling IPM) Y2E Same as normal control
Electronic expansion valve (Subcooling heat exchanger) Y3E Discharge temperature control
Electronic expansion valve (Refrigerant auto charge) Y4E Minimum pulse
Electronic expansion valve (Refrigerant cooling air) Y5E Same as normal control
Solenoid valve (Oil separator oil return) Y1S, Y2S ON
Solenoid valve (Hot gas bypass) Y3S ON
Solenoid valve (Accumulator oil return) Y4S ON
Solenoid valve (Four way valve) Y5S OFF
Solenoid valve (Injection) Y6S ON
Ending condition A lapse of 6 minutes while the frequency is more than
that of oil return operation or Ts − Teg < 3°C (5.4°F).
Indoor unit actuator Oil return operation
Fan
Thermostat ON unit Remote controller setting
Non-operating unit OFF
Thermostat OFF unit Remote controller setting
Electronic expansion valve
Thermostat ON unit Normal control
Non-operating unit 224 pulse
Thermostat OFF unit 224 pulse
Low-temperature hydrobox unit actuator Oil return operation
Pump
Thermostat ON unit Normal control
Non-operating unit Normal control
Thermostat OFF unit Normal control
Electronic expansion valve
Thermostat ON unit 0 pulse
Non-operating unit 0 pulse
Thermostat OFF unit 0 pulse