MitsuRunner-adapter also known as puu-adapter, because “puu” lampopumput.info forum builds these. With the adapter you can connect MitsuRunner to Mitsbishi Electric heat pump (at least LN models) without cutting any wires.

If you want to buy ready-made adapters, please send e-mail to puu [at] kapsi [dot] fi. The price is 30€/piece + 5€ shipping inside EU.

Wiring to the relay:

• 1 (white or yellow) - COM
• 2 (black) - NC
• 3 (red) - NO

Parts:

• Female connector housing: https://www.te.com/usa-en/product-2-1747066-4.html
• Male connector housing: https://www.te.com/usa-en/product-2-1747067-4.html
• Socket contacts: https://www.te.com/usa-en/product-1747062-1.html
  • Option B: https://www.te.com/usa-en/product-1747591-1.html
  • Option C: https://www.te.com/usa-en/product-1747063-1.html