Daikin SkyAir FHQ24PVJU - Special Control

Operation Mode SiUS281811EA
104 Part 4 Functions and Control
Note(s)
1. Operation Mode
In the event that the indoor unit stops or the thermostat turns OFF while in oil return operation or
defrost control, pump down residual operation is performed on completion of the oil return
operation or defrost control.
Startup control
Oil return operation
YES
YES
NO
NO
Error/Standby
Normal operation
Indoor unit thermostat ON
NO
YES
Defrost control
Indoor unit thermostat ON
Error/Standby
Error/Standby
Operation in
stop control
Pressure
equalization
prior to startup
Indoor unit stop or
thermostat OFF
Cooling or heating
operation
Oil return starting
conditions are met.
Defrost starting
conditions are met.
Operation
mode change
Indoor unit stop or
thermostat OFF
Indoor unit stop or
thermostat OFF
Error/
Standby
Pump down
residual
operation
Restart standby
(Compressor stop)
• Cooling startup
control
• Heating startup
control
• Compressor PI control
• Electronic expansion
valve PI control
• Protection control