SiBE041434E Control SpecificationFunction and Control 483.11.1 Fully Closing with Power ONThe electronic expansion valve is initialized when turning on the power. The opening position isset and the pressure is equalized.3.11.2 Pressure Equalizing ControlWhen the compressor is stopped, the pressure equalizing control is activated. The electronicexpansion valve opens and the pressure is equalized.3.11.3 Opening Limit ControlThe maximum and minimum opening of the electronic expansion valve are limited.The electronic expansion valve is fully closed when cooling operation stops, and is opened at afixed degree during defrosting.3.11.4 Starting Operation ControlThe electronic expansion valve opening is controlled when the operation starts, thus preventingsuperheating or liquid compression.3.11.5 Control when the Frequency ChangesWhen the target discharge pipe temperature control is active, if the target frequency changes toa specified value in a certain time period, the target discharge pipe temperature control iscanceled and the target opening of the electronic expansion valve is changed according to thefrequency shift.3.11.6 High Discharge Pipe Temperature ControlWhen 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. Thisprocedure lowers the discharge pipe temperature.20/25/35 class 42/50 classMaximum opening (pulse) 480 500Minimum opening (pulse) 32 52
