ESIE05-03 General FunctionalityPart 2 – Functional Description 2–17324511.12 Pump Down Residual OperationOutline The unit will conduct a pump down residual operation after each compressor stop command.Purpose of this function is to collect the refrigerant in the liquid receiver and outdoor heat exchangerin order to prevent liquid refrigerant from remaining in the indoor heat exchanger.ParametersGraphEnding condition* Low pressure value is calculated in case of RZQ100~140B.RZQ71B RZQ100~140BCompressor 38 Hz 52 HZExpansion valve 65 to 0 pulses(RZQ71: after 20 seconds, RZQ100~140: after 10 seconds)RZQ71 RZQ100~140OR30 seconds have elapsed since start ofresidual operation10 seconds have elapsed since start ofresidual operationLP < 2 bar (in cooling*)ORLP < 1 bar (in heating*)--- LPS is activated
