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Main Functions
SiBE041401E
17
Function and Control
The following drawing shows a schematic view of the inverter principle:
Inverter Features
The inverter provides the following features:
The regulating capacity can be changed according to the changes in the outdoor
temperature and cooling / heating load.
Quick heating and quick cooling
The rotation speed of the compressor is increased when starting the heating (or cooling).
This enables to reach the set temperature quickly.
Even during extreme cold weather, high capacity is achieved. It is maintained even when the
outdoor temperature is 2°C.
Comfortable air conditioning
A fine adjustment is integrated to keep the room temperature constant.
Energy saving heating and cooling
Once the set temperature is reached, the energy saving operation enables to maintain the
room temperature at low power.
Frequency Limits
The following functions regulate the minimum and maximum frequency:
Forced Cooling
Operation
Refer to page 104 for detail.
Refrigerant circulation rate (high)
high f
low f
freq=variable
Refrigerant circulation rate (low)
high speed
low speed
(R2812)
Amount of heat
exchanged air (large)
freq=
constant
50 Hz
60 Hz
capacity=
variable
Amount of heat
exchanged air (small)
AC
po
w
er
DC po
w
er
Amount of heat
exchanged air (large)
Amount of heat
exchanged air (small)
Frequency
Functions
Low
Four way valve operation compensation. Refer to page 39.
High
Compressor protection function. Refer to page 40.
Discharge pipe temperature control. Refer to page 40.
Input current control. Refer to page 41.
Freeze-up protection control. Refer to page 42.
Heating peak-cut control. Refer to page 42.
Defrost control. Refer to page 44.
Summary of Contents for FTXG20LV1BW
Page 12: ...SiBE041401E 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 14: ...SiBE041401E 3 Specifications Part 2 Specifications 1 Specifications 4...
Page 60: ...SiBE041401E 49 Remote Controller Part 5 Remote Controller 1 Remote controller 50...
Page 113: ...SiBE041401E Check Service Diagnosis 102 50 class Diode bridge R19944...
Page 127: ...Revision History Month Year Version Revised contents 03 2014 SiBE041401E First edition...