Control Daikin air conditioner over the Internet

Here is a small home-automation project that I have been working in my free time. I wanted to control my home-made air source heat pump system (based on Daikin FTX71GV / RX71GV ) from anywhere with Internet access. That would allow me to control my house’s heating/cooling remotely and more interestingly I could create scripts that turn the heating up/down based on outside temperature, time of day, inside average temperature and other criteria. All this to make a more efficient energy use, therefore a greener energy plan.