Inconsistent behaviour when using air conditioners' as sensors for automation

[skra72]

We have two split air conditioner system with two indoor units each. So in total it's two identical outdoor units (MXZ-2F53VF4) and four identical indoor units (MSZ-AY25VGK).

Using your plugin in HomeBridge makes everything working like a charm in HomeKit. Except when trying to create an automation that uses the indoor units state as trigger.

When your create an automation you can choose "A sensor detects something" and next the four indoor units are available as sensors to trigger the automation.

In my case three of the indoor units seem to represent simple on/off switches.

But one unit is offered as a temperature sensor:

I don't understand why the indoor units show up here either as temperature sensor or as switch? The behaviour seems to change of time/after various HomeBridge restarts as either more units show up as temp. sensor or other units are suddenly temp. sensors, too.

I know that is possible to make the indoor units present an additional temperature sensor using advanced settings. But then some units show up as two temp. sensors.

Am I missing to configuration? How to get all indoor units show up as on/off switch in an automation? The device specs of all units are identical, except S/N, MAC, etc. of course.

Cheers