Pump-Down Residual Operation - Daikin RXYQ72 Serivce Manual

Special Control
3.4

Pump-down Residual Operation

3.4.1 Pump-down Residual Operation in Cooling Operation
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)
Non-operating unit gas discharging valve (SVSG)
Non-operating unit liquid pipe stop valve (SVSL)
Ending conditions
3.4.2 Pump-down Residual Operation in Heating Operation
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)
Non-operating unit gas discharging valve (SVSG)
Non-operating unit liquid pipe stop valve (SVSL)
Ending conditions
44
Actuator
Actuator
Operation
210 Hz + OFF
Fan control
OFF
0 pls
0 pls
ON
ON
OFF
ON
OFF
ON
• 5 min.
• Pe<72.5 psi
or
• Td>230°F
Operation
124 Hz + OFF
STEP8
ON
0 pls
0 pls
ON
ON
OFF
ON
OFF
ON
• 30 sec.
• Pe<36 psi
or
• Td>230°F
SiUS39-601
Function