Preparing to monitor a new Mitsubishi Ecodan

Hello, and welcome to the forum! I’ve split this off as a new topic.

If you want accurate measurements of electrical and heat energy, then you will need a level 3 monitoring kit, either from Open Energy Monitor or Mitsubishi’s own EMP3 kit.

If you only want to monitor flow temperatures and general operation of the heat pump, then Mitsubishi’s “Melcloud” service lets you do that. You’ll need to purchase the wifi dongle for that, which may be included in the package.

If you want to extract data out of Melcloud, you can use pymelcloud or Home Assistant, or I can do that for you.

One can estimate the performance of the heat pump without metering. YMMV.

It’s also possible to talk to the heat pump directly via the CN105 protocol - see this topic for details on how to do that.

There are settings on the main controller for scheduling when hot water runs, and to control the heating. Or you can adjust the heat pump using the integrations described above. There’s also a couple inputs on the main controller for signalling “smart grid”. See topic below for more…