Target temperature fixed to 10°C?

[christiaandewit]

It seems to me that the minimum target temperature for a thermostat in Home Kit is always 10°C, even when the thermostat in Homey allows a lower target temperature. I've tested this with Vtherm and Virtuele Apparaten and the result in Home Kit is the same.

In my case, I have a electric heaters in my garage and storage connected to an Ikea smart plug and the temperature is measured by Sonoff temperature sensors. I added a virtual thermostat using the Vtherm Homey app and it works perfectly fine, except for the minimum target temperature. I've set it to 5°C in Homey, but in the Home app it shows a target temperature of 10°C.

@robertklep, am I doing something wrong? If you need more information, please ask.

[robertklep]

Yes, the default minimum target temperature in Homekit is 10°C. I'll see if I can transfer the values from the Homey capability over to the Homekit characteristics.

[robertklep]

Try the test version: https://homey.app/a/name.klep.homekitty/test/

[christiaandewit]

Now HomeKit shows the correct target temperature. I still cannot change it to a value lower than 10°C, but as I understand it correctly, that's a limitation of HomeKit itself?

[christiaandewit]

While searching the internet, I stumbled upon a forum for OpenHab, where a similar issue was discussed. It seems like there might be a solution: https://community.openhab.org/t/minimum-and-maximum-temperature-for-homekit-binding-thermostat/17442 However, I'm not a developer, so maybe I'm completely off here 🤷‍♂️

[robertklep]

It should be possible to set it lower:

(4°C is the default minimum for the Homey capability, so it got transferred properly to Homekit)

You can try to "unpublish" the device, then publish it again. You can do that from the app configuration screen for Homekitty in the Homey app.

[christiaandewit]

Yes! Unpublishing en republishing fixed it! Thank you so much for your extremely fast replies and solution!

[robertklep]

Thanks for testing! 👍🏻