Daikin VRV II RXYQ5MY1B Service Manual page 73

Refrigerant Flow for Each Operation Mode
Heating Oil Return & Defrost Operation
High temperature, high pressure gas
High temperature, high pressure liquid
Low temperature, low pressure
62
Fan OFF
Fan OFF " ON "
Heat exchanger
Fan
EXV : 512 pls
Filter Filter
Indoor unit
Thermostat "ON"
Solenoid
valve
Heat
exchanger pipe
Filter
Solenoid
valve
Pressure
regulating valve
Solenoid
valve
Low pressure
sensor
Stop valve (With service port on on-site piping side ø7.9mm flare connection)
Indoor unit operation
Fan OFF
" OFF "
Heat exchanger
Fan
EXV : 512 pls
Filter Filter Filter
Indoor unit
Filter
Filter Filter
Electronic
Capillary expansion valve
tube
Heat exchanger
Four way
valve
High pressure
sensor
Filter
High pressure
switch
Filter
Compressor
Capillary
INV
tube
Filter
SiE39-404
" ON "
Heat exchanger
Fan
EXV : 512 pls
Filter
Indoor unit
Thermostat "OFF"
Fan
4D040337C
Refirgerant Circuit