15English15EnglishBASIC OPERATIONWater LawHydro unit will automatically adjust thetemperature of discharge water with auto modefor indoor heating.NOTE• When “Water Law” is active, the targetsupply water temperature will bedetermined automatically depending onthe outdoor temperature: For heatingmode, colder outdoor temperatures willresult in warmer water.CoolYou can adjust cooling temperature as you likewith cool mode to cool indoor place.• When selecting the heat mode during thecool mode, the cool mode will be canceled.HeatFloor heating is available with heat mode byproviding hot water in the spring, autumn andwinter.• Frost removal indicator ( )– The frost removal indication will bedisplayed when the frost formed aroundthe outdoor unit starts being removedduring the heat mode and then theindication will disappear when the frostremoval is finished. (When frost is beingremoved, hot water does not come outfrom Hydro unit.)• When selecting cool mode during the heatmode, heat mode will be canceled.NOTE• When setting standard cooling& heating temperature as indoortemperature, auto mode cannot beselected.Operate basic mode by pressing the Mode button.Operating basic mode of Hydro unitStart Hydro unit operation by pressing the button.Select the mode you want to operate by pressing thebutton.Adjust desired temperature by pressing the button.Temperature ofcooling dischargewaterYou can adjust the desiredtemperature by 0.5 °C.Indoor coolingtemperatureYou can adjust the desiredtemperature by 0.5 °C.Temperature ofheating dischargewaterYou can adjust the desiredtemperature by 0.5 °C.Indoor heatingtemperatureYou can adjust the desiredtemperature by 0.5 °C.