Outdoor Unit (50/60 class) Si21-205112 Function and Control3.13 Electronic Expansion Valve ControlOutline The following items are included in the electronic expansion valve control.Electronic expansion valve is fully closed1. Electronic expansion valve is fully closed when turning on the power.2. Pressure equalizing controlOpen Control1. Electronic expansion valve control when starting operation2. Control when frequency changed3. Control for defrosting (only for heat pump model)4. Control when a discharge pipe temperature is abnormally high5. Control when the discharge pipe thermistor is disconnectedFeedback Control1. Discharge pipe temperature controlDetail The followings are the examples of control which function in each mode by the electronicexpansion valve control.(R2833)× × ×× ×××× ×× ×××××Fully closed when power is turned ONOpen control when starting(Control of target discharge pipe temperature)Pressure equalizing controlOpen control when starting(Control of target discharge pipe temperature)(Defrost control FD=1)Pressure equalizing controlOpen control when startingContinuePressure equalizing controlControl when frequency changedControl for abnormally high dischargepipe temperatureWhen power is turned ONCooling operationStopHeating operationStopHeating operationControl of discharge pipethermistor disconnectionStopOperation pattern(only for heatpump model)(only for heatpump model) : function× : not function(only for heat pump model)
