Daikin VRV III - Operation Mode

Function General SiENBE37-701
104 Function
1.2 Operation Mode
Ye s
No
No
Ye s
No
Ye s
Thermostat ON
Pressure egualization
prior to startup
Large capacity
startup
Oil return IN
conditions are met
in
operation
Malfunction/Standby
After completion of
startup control
Defrost IN
conditions are met
Operation mode
changeover
Malfunction/
Standby
Malfunction/
Standby
Oil return
operation∗
Defrosting
operation∗
Operation mode
changeover
Indoor unit stop or
thermostat OFF
Operation
mode
changeover
Pump-down
residual
operation
Malfunction/
Stanby
Malfunction/
Stanby
Mode
changeover
∗
Restart
standby
Indoor unit stop or
thermostat OFF
Rotation
Cooling
startup
Heating
startup
Indoor unit stop
or thermostat
OFF
Indoor unit
stop or
thermostat
OFF
Thermostat ON
Operation in
stop mode
Normal operation
• Compressor PI control
• Motorized valve PI control
• Protection control
∗ “Oil return”, “Defrost” and “Mode changeover” move on to the next process after the completion of
above function in progress even if the thermostat is OFF during the operation.
Thermostat ON
Operation
mode
changeover