Comment by fy20

I think it's worth remembering that outside of our bubble the quality of software is pretty bad. I had a Hitachi heat pump (not recommended) installed earlier this year, and the software is pretty disappointing. It mostly works, but there are so many undocumented features and hard coded values that should be a configuration option but are not.

For example when the heat pump reaches the target temperature it shuts off, then after 3 minutes switches on again. To prevent short cycling, I'd like to decrease the time between runs (so increase the 3 minutes) but that can't be changed. Somebody decided that 3 minutes is the correct value for everybody and that's it.

I bought a €400 interface box (basically just a serial to IP interface, I guess $20 of hardware tops) to try and improve it. The €8000 heat pump doesn't come with WiFi or ethernet out of the box, you need to buy an accessory for that. It's not made by Hitachi, but it's an officially recommended accessory. One of what feature I wanted it for - which is advertised in their marketing materials - doesn't work.

I emailed them, and they said it's probably because the display I have is a newer revision and doesn't allow access to the setting I need to turn on. And without turning that setting on I can't use the feature as advertised. They said I should email Hitachi and talk to them instead as it's not their part that's the issue.

I look forward to the world where all software is either open source, or at least reverse engineerable to the point where you no longer have nonsense like this.