Daikin REYQ-XA, Руководство по обслуживанию

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SiUS371901E Function General
Functions and Control 104
1. Function General
1.1 Outdoor Unit
For detailed description of each function in the flow below, refer to the details on related function on the following
pages.
Notes: 1. If the indoor unit stops or the thermostat turns OFF while in oil return control (or defrost control),
pump down residual control is performed on completion of the oil return control (or defrost
control).
2. Not performed during cooling mode.
Stop control
(1) Stop due to error
(2) When system is in stop control
(3) Slave unit stops during master unit control
Standby control
(1) Restart standby
(2) Crankcase heater control
Startup control
(include pressure equalization before startup)
(1) Startup control in cooling
(2) Startup control in heating
Basic control
(1) Normal control
(2) Compressor PI control
(3) Operation priority and rotation of
compressors
(4) Compressor step control
(5) Electronic expansion valve PI control
(6) Step control of outdoor fans
(7) Heat exchanger control
Protection control
(1) High pressure protection control
(2) Low pressure protection control
(3) Discharge pipe protection control
(4) Compressor body protection control
(5) Inverter protection control
Thermostat ON
End of
startup
control
Abnor
mality
Ther
mostat OFF
Conditions met for oil return
Special control
(1) Pump down residual control
(note 2)
(4) Outdoor unit rotation
Thermostat OFF
(2) Oil return control (note 1)
Conditions met for defrosting
(3) Defrost control (note1)