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Si12-619A
Main Functions
Function and Control
79
Inverter Features
The inverter provides the following features:
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.
Even during extreme cold weather, the high capacity is achieved. It is maintained even when
the outdoor air temperature is 2°C.
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.
Frequency Limits
The following table shows the functions that define the minimum and maximum frequency:
Forced Cooling /
Heating Operation
For more information, refer to “Forced operation mode” on page 113.
60
120
300
45˚C
Air discharge
temperature
inverter
normal heat pump
Start
seconds
(R1187)
Frequency limits
Limited during the activation of following functions
Low
Four way valve operation compensation. Refer to page 103.
High
Input current control. Refer to page 104.
Compressor protection function. Refer to page 103.
Heating Peak-cut control. Refer to page 105.
Freeze-up protection. Refer to page 105.
Defrost control. Refer to page 107.
Summary of Contents for 3MKS50DVM
Page 13: ...Introduction Si12 619A xii ...
Page 131: ...Control Specification Si12 619A 118 Function and Control ...
Page 213: ...Instruction Si12 619A 200 Operation Manual ...
Page 283: ...Check Si12 619A 270 Service Diagnosis ...
Page 302: ...Si12 619A Outdoor Unit E Series 50 52 58 Class Removal Procedure 289 Step Procedure Points ...
Page 385: ...Wiring Diagrams Si12 619A 372 Appendix FTK X S50 60 71FVLT ...
Page 399: ...Si12 619A vi Index ...