Daikin RXYQ96PYDN, Service Manual

Page: 57 / 567

Function General SiUS34-801A_b
42 VRVIII R-410A Heat Pump 60Hz
5.2 Operation Mode
Press u re eg u alization
prior to start u p
Large capacity
start u p
Oil ret u rn I N
conditions are met
Oil ret u rn
operation
*
P u mp-do w n
resid u al
operation
Restart
stand b y
Yes
N o
Thermostat O N
Malf u nction/
Stand b y
Indoor u nit stop
or thermostat OFF
N ormal operation
Operation
mode
changeo
v er
Defrost I N
conditions are met
N o
Yes
Defrosting
operation
*
in
operation
Operation mode
changeo v er
Malf u nction/Stand b y
Thermostat O N
After completion of
start u p control
Cooling
start u p
Heating
start u p
Thermostat O N
Operation mode
changeo v er
N o
Yes
Mode
changeo v er
*
Operation
mode
changeo v er
Malf u nction/
Stand b y
Indoor u nit stop
or thermostat OFF
Malf u nction/
Stand b y
Malf u nction/
Stand b y
Indoor u nit stop
or thermostat
OFF
Indoor u nit
stop or
thermostat
OFF
*
“Oil ret u rn”, “Defrost” and “Mode changeo v er” mo v e on to the next process after the completion of
a b o v e f u nction in progress e v en if the thermostat is OFF d u ring the operation.
Operation in
stop mode
Compressor PI control
Motorized
v al v e PI control
Protection control
Rotation