hi.. just got this thread when searchin from google. really a gd thread talkin about aircon as i also findin threads about aircon. started readin a few page in this thread.
recently started to knw more and researchin about aircon stuff since my hse jus installed new aircon 2 weeks ago.
jus a info to all here, mine is a daikin system 4, 3 ticks. is a non-inverter. model of compressor is same as posidongal, MA56EV1. 3 x FT25DVM, 1 x FT50FVM. i brought it from FairPrice Xtra at jurong point @ $2799. installer is TRENDS HOME ELECTRICAL. they did a very gd installation. after search many thread/forum, nobody brought it from fairprice xtra.
after 2 weeks of using, no problem at all wit the piping. even previous aircon also no problem too. previous one was fuji electric system 2. using it for 8-9years. not sure which installer. i check the circuit diagram of the old one, it is usin 2 compressor.
answerin to posidongal, the total of compressor is 20267btu/hr.(1 big compressor w/ 4 valves) so if u on all 3, it wil be divide by 3. but max fcu btu is 9000. (living rm one is 18000btu/hr)
actually from my point of view, it is best to on 2 fcu at the same time. but i dont tink both fcu wil be at the same temp at same time. so no matter at which time which fcu switch on, its stil the same ba.
At 1 time when i start on the aircon wit 2 fcu, i note down the meter outside my hse. so after i switch off, it is 8kWh. so is around $1.50 for 6 to 7hrs usage. not sure is it same as other ppl usin the same model?