SiBE041012_A Control SpecificationFunction and Control 443.11 Outdoor Electronic Expansion Valve ControlOutline The following items are included in the outdoor electronic expansion valve control.Outdoor electronic expansion valve is fully closed.1. Outdoor electronic expansion valve is fully closed when turning on the power.2. Pressure equalizing controlOpen Control1. Outdoor electronic expansion valve control when starting operation2. Outdoor electronic expansion valve control when the frequency changes3. Outdoor electronic expansion valve control for defrosting4. Outdoor electronic expansion valve control when the discharge pipe temperature isabnormally high5. Outdoor electronic expansion valve control when the discharge pipe thermistor isdisconnectedFeedback Control1. Target discharge pipe temperature controlDetail The followings are the examples of control which function in each mode by the outdoorelectronic expansion valve control.h : function− : not functionUnder defrost controlCoolingStarting control − h − − − − − −Control when the frequency changes − − h − h − − −Target discharge pipe temperature control − − − h − − − −− − − − − h h −High discharge pipe temperature control − h h h hh h h h h− − −Pressure equalizing control h − − − − − − −Opening limit control − h −HeatingStarting control − h − − − − − −Control when the frequency changes − − h − h − − −Target discharge pipe temperature control − − − h − − − −− − − − − h h −High discharge pipe temperature control − h h h h − − −Defrost control − − − − − − − hPressure equalizing control h − − − − − − −Opening limit control − h h h h h h −Control for disconnection of the dischargepipe thermistorWhen the power turns on or when the compressorstopsWhen the frequency changes under target dischargepipe temperature controlWhen the disconnection of the discharge pipethermistor is ascertainedWhen the frequency changes under the control fordisconnection of the discharge pipe thermistorDuring target discharge pipe temperature controlWhen the frequency changes under starting controlWhen the operation startsControl for disconnection of the dischargepipe thermistor
