SiBE07-618_C
Control Specification
Function and Control
39
3.11.1 Fully Closing with Power ON
The electronic expansion valve is initialized when turning on the power. The opening position is
set and the pressure equalization is developed.
3.11.2 Pressure Equalization Control
When the compressor is stopped, the pressure equalization control is activated. The electronic
expansion valve opens, and develops the pressure equalization.
3.11.3 Opening Limit
Outline
A maximum and minimum opening of the electronic expansion valve are limited.
Detail
The electronic expansion valve is fully closed when cooling is stopped and is opened at fixed
degree during defrosting.
3.11.4 Starting Operation Control
The electronic expansion valve opening is controlled when the operation starts, and prevents
the superheating or liquid compression.
3.11.5 High Discharge Pipe Temperature
When the compressor is operating, if the discharge pipe temperature exceeds a certain value,
the electronic expansion valve opens and the refrigerant runs to the low pressure side. This
procedure lowers the discharge pipe temperature.
Maximum opening (pulse)
480
Minimum opening (pulse)
54
