The indoor blower design are kinda weak i must say. When its dirty, the wind will be soft and cooling power diminish. Worse case, will have tik tik tik sound. The blower aint detachable like mitsubishi mr slim which can depart the louver by half, and blower removed for thorough brushing. I have 6 units of Daikin inverter in my house, cant comment on the bills or energy saving since the meter is ahem..ahem...

For optimizing the cooling effect, try to have the indoor blower service/wash. The servicemen have a special brush that can wash the blower easily without taking out the units.

The aluminium fin or coil are still in good shape after 5 years. No visible corrosion. Electronics boards are all okie, and no water spooling or leaking problems so far.

So set temp to 24c and press econo. Izzit ok?

Can set automatically?

normal service is abt RM80~120 per unit. If u done twice a year, that is good enough, in fact, very good.

econo mode is abt selecting the most energy saving program logic for the inverter units. In econo mode, the inverter will react more prudent in achieving the set/requested temperature.

inverter units is unlike normal unit. Inverter unit has motor running(compressor, cent fan) that dont just run on 50Hz(msia spec). They can run at 20~60Hz depending on models. By doing this, the motors will not draw too high current or energy whenever a parameter is out from control range. They can slowly adjust the parameters, running at slower pace when the variance is just small. Simple term, u need just 0.5celcius minor increase(cost someone open the door letting hot air in, etc), the aircond can run on 20~30Hz or 0.5HP, and when u just start the aircond, need 4~5celcius adjustment, it will run full speed 50~60Hz (2.0HP).