8Preparation before Operation Turn the breaker on• After the power is turned on, the flap of the indoor unit opens and closes once to set thereference position.NOTE Tips for saving energy• Be careful not to cool (heat) the room too much.Keeping the temperature setting at a moderatelevel helps save energy.• Cover windows with a blind or a curtain.Blocking sunlight and air from outdoorsincreases the cooling (heating) effect.Recommended temperature settingFor cooling: 26 – 28°CFor heating: 20 – 24°C• Clogged air filters cause inefficient operation and waste energy. Clean them once in aboutevery 2 weeks. Please note• The air conditioner always consumes 15 – 35W of electricity even while it is not operating.• If you are not going to use the air conditioner for a long period, for example in spring orautumn, turn the breaker off.• Use the air conditioner in the following conditions.Mode Operating conditions If operation is continued out of this rangeCOOL Outdoor temperature: -10 – 46°CIndoor temperature: 18 – 32°CIndoor humidity: 80% max.• A safety device may work to stop the operation.• Condensation may occur on the indoor unit and drip.HEAT Outdoor temperature: -15 – 24°CIndoor temperature: 10 – 30°C• A safety device may work to stop the operation.DRY Outdoor temperature: -10 – 46°CIndoor temperature: 18 – 32°CIndoor humidity: 80% max.• A safety device may work to stop the operation.• Condensation may occur on the indoor unit and drip.• Operation outside this humidity or temperature range may cause a safety device to disablethe system.