Operation Mode - Daikin VRV II RXYQ5MY1B Service Manual

SiE39-404
1.2

Operation Mode

Indoor unit stop or
Indoor unit stop or
thermostat OFF thermostat OFF
Startup control
• Cooling startup
• Heating startup
Normal operation
• Compressor PI control
• Motorized valve PI control
• Protection control
Function
Operation in Operation in
stop mode
stop mode
Indoor unit thermostat ON
Pressure
equalization
prior to startup
control
Indoor unit thermostat ON
control
Malfunction/Standby
Outdoor unit
rotation
Cooling or heating
operation
Yes
Oil return IN
conditions are met.
No
Yes
Defrost IN
conditions are met.
No
Yes
Temperature
control change
No
Malfunction/Standby
(Compressor stop)
Indoor unit stop or
thermostat OFF
Indoor unit stop or
thermostat OFF
Malfunction/
Standby
Oil return operation
Defrosting operation
*)
In the event indoor unit stops or the thermostat
turns OFF while in oil return operation or
defrosting operation, pump-down residual
operation is performed on completion of the oil
return operation or defrosting operation.
Function general
Restart standby
Malfunction/
Standby
Pump-down
residual
operation
Outdoor unit
rotation
75