puu's MitsuRunner setup

• My slightly modified MitsuRunner software on GitHub: https://github.com/kestopuu/mitsurunner/

Notable changes to the original SW and HW:

• Two additional Dallas sensors in heat exchanger pipes (used for research and as spare parts)
• Current clamp sensor monitoring input power of the heat pump
• Variable temperature delta threshold to start defrosting:
  • if (input) power < 500W, threshold = 4
  • if 900W ⇐ power < 1000W, threshold = 5
  • if power >= 1000W, threshold = 6

Outdoor heat exchanger sensor (vertically installed on the lowest pipe) and two additional sensors just in case