Daikin FTXS09DVJU Service Manual page 31

Main Functions
Inverter Features The inverter provides the following features:
Frequency Limits The following table shows the functions that define the minimum and maximum frequency:
Frequency limits
Low
High
Forced Cooling For more information, refer to "Forced operation mode" on page
Operation
20
The regulating capacity can be changed according to the changes in the outdoor air
temperature and cooling / heating load.
Quick heating and quick cooling
The compressor rotational speed is increased when starting the heating (or cooling). This
enables a quick set temperature.
Air discharge
temperature
113˚F
Start
Even during extreme cold weather, the high capacity is achieved. It is maintained even when
the outdoor air temperature is 36°F.
Comfortable air conditioning
A detailed adjustment is integrated to ensure a fixed room temperature. It is possible to air
condition with a small room temperature variation.
Energy saving heating and cooling
Once the set temperature is reached, the energy saving operation enables to maintain the room
temperature at low power.
Four way valve operation compensation. Refer to page 37.
Input current control. Refer to page 39.
Compressor protection function. Refer to page 38.
Heating peak-cut control. Refer to page 40.
Freeze-up protection control. Refer to page 39.
Defrost control. Refer to page 41.
inverter
normal heat pump
60 120
Limited during the activation of following functions
SiUS04-702
seconds
300
(R4144)
.
46
Function and Control