8Preparation Before Operation Setting the air purifying filtersIndoor unitNOTEPull out the air filters. Push upwards thetab at the center ofeach air filter, thenpull it down.2Open the front grille. Hold the grille by the tabs on the two sidesand lift it until it stops with a click.(about 60°)1Set the air purifying filters. Attach an air purifying filter to each air filter.(See page 13 “Care and cleaning”)Set the air filters in their originalpositions and close the front grille. Operation without air filters may result introubles as dust will accumulate inside theindoor unit.34Please note The air conditioner always consumes 15 - 35watts of electricity even while it is not operating. If you are not going to use the air conditioner fora long period, for example in spring or autumn,turn the breaker OFF. Use the air conditioner in the following conditions.ModeCOOLHEATDRYOperating conditionsOutdoor temperature : 19 to 54 °CIndoor temperature : 18 to 32 °CIndoor humidity : 80% max.Outdoor temperature : –10 to 21 °CIndoor temperature : 28 °C max.Outdoor temperature : 19 to 54 °CIndoor temperature : 18 to 32 °CIndoor humidity : 80% max.If operation is continued out of this range• A safety device may work to stop theoperation.(In multi system, it may work to stopthe operation of the outdoor unit only.)• Condensation may occur on theindoor unit and drip.• A safety device may work to stop theoperation.• A safety device may work to stop theoperation.• Condensation may occur on theindoor unit and drip.Tips for saving energy Be careful not to cool (heat) the room too much.Keeping the temperature setting at a moderatelevel helps save energy.Recommended temperature settingFor cooling: 26°C – 28°CFor heating: 20°C – 24°C Cover windows with a blind or a curtain.Blocking sunlight and air from outdoorsincreases the cooling (heating) effect. Clogged air filters cause inefficientoperation and waste energy. Clean themonce in about every two weeks. Holding down ( ) or ( ) buttonrapidly increases or decreases the time display. Setting the clockPress .Press to set the clock to thepresent time. Turn the breaker ON Turning ON the breaker opens the flap, thencloses it again. (This is a normal procedure.)1is displayed.2blinks.3 Press .blinks.(Now the clock is set.)