The Efficient Home Forum

The HR92 are controlled by the settings of the ATC928 and work fine. The problem is the detection of the actual temperature. The HR92 are in corners and measure far to high temperatures. Therefor each room/HR92b got a T87RF assigned to measure the actual temperature at a more useful spot.
The T87RF are perfect bound and work fine setting the temperature but it looks like they are not used to measure the actual temperature.

Is there a failure or did I miss the concept of the interaction of the three components?

Thanks in advance

I think I understood what is going on after some time.
If multiple devices with sensors like HR92 and T87RF are bound into one zone is the last bound device used to monitor the actual temperature.
I unbound and rebound the T87RF in all zones. That made them the last device with sensor capability in each zone and their sensed temperature is now used to control the actuators.

In a correctly bound evohome system using those components, the ATC928 acts as the main controller (brain), HR92 acts as an actuator (movement) and T87RF acts as sensor (temp sensing)...