Operation Mode - Daikin SkyAir RZR-TA Series Service Manual

Operation Mode

1. Operation Mode

Indoor unit stop or
thermostat OFF
Normal operation
• Compressor PI control
• Electronic expansion
valve PI control
• Protection control
Note(s)
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.
104
Operation in
stop control
Indoor unit thermostat ON
Pressure
equalization
prior to startup
Startup control
• Cooling startup
control
• Heating startup
control
Cooling or heating
operation
YES
Oil return starting
conditions are met.
NO
YES
Defrost starting
conditions are met.
NO
YES
Operation
mode change
NO
Error/Standby
Indoor unit stop or
thermostat OFF
Indoor unit thermostat ON
Error/Standby
Indoor unit stop or
thermostat OFF
Error/Standby
Restart standby
(Compressor stop)
Pump down
residual
operation
Oil return operation
Defrost control
Part 4 Functions and Control
SiUS281811EA
Error/
Standby