Oil Return Operation - Daikin RXYQ72 Serivce Manual

SiUS39-601
3.2

Oil Return Operation

3.2.1 Oil Return Operation in Cooling Operation
Outdoor unit actuator
Compressor
Outdoor unit fan
Four way valve
Main motorized valve (EV1)
Subcooling motorized valve (EV2)
Hot gas bypass valve (SVP)
Oil equalization valve (SVO)
Receiver gas charging valve (SVL)
Receiver gas discharging valve (SVG) OFF
Non-operating unit gas discharging
valve (SVSG)
Non-operating unit liquid pipe stop
valve (SVSL)
Ending conditions
Fan
Electronic expansion valve
Function
Oil return preparation
operation
Upper limit control
Fan control
OFF
0 pls
SH control
OFF
ON
OFF
OFF
ON
2 min.
Indoor unit actuator
Thermostat ON unit
Stopping unit
Thermostat OFF unit
Thermostat ON unit
Stopping unit
Thermostat OFF unit

Oil return operation

124 Hz + ON
Fan control
OFF
0 pls
0 pls
ON
ON
OFF
OFF
OFF
ON
• 6 min.
or
• Ts - Te<9
Cooling oil return operation
Special Control
Post-oil-return operation
52 Hz + OFF
Fan control
OFF
0 pls
0 pls
ON
ON
OFF
OFF
OFF
ON
10 sec.
Set Air Volume
OFF
OFF
Normal opening
200 pls
200 pls
41