Main Functions SiBE12-71374 Function and Control1.12 Inverter POWERFUL OperationOutline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner byincreasing the indoor fan rotating speed and the compressor frequency.Details of theControlWhen POWERFUL button is pushed in each operation mode, the fan speed / settingtemperature will be converted to the following states in a period of twenty minutes.In case of FTK(X)S20-50DEx.) : Powerful operation in cooling mode.Refer to “Fan Speed control” on page 65 for detail.Operation mode Fan speed Target set temperatureCOOL H tap + 50 rpm 18°CDRY Dry rotating speed +50 rpm Normally targetedtemperature in dryoperation; Approx. –2°CHEAT H tap + 50 rpm 30°CFAN H tap + 50 rpm —AUTO Same as cooling /heating in PowerfuloperationThe target is keptunchanged(R4560)Target temp.Fan50rpmSet temp.18˚CPowerful ONPowerful OFFH tapSet tapIt should be the lower limit of cooling temperature.It counts 20 min. also in the remote controller.20min.Ending condition: "or" in 1 to 31. After the lapse of 20 minutes.2. Stop3. Powerful operation is OFF.