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Heating hysteresis

Guest shared this question 10 years ago
Need Answer

From the documentation and the questions and answers on this form I though there was a hysteresis in the thermostat, but when logging and plotting the actual temperature and state of the boiler actuator it switches off and on constantly. (see screenshot).


The wanted temperature is set to be 20°C.


How comes?


Maarten

Replies (2)

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Other examples in the event log are like:


on/off boiler actuator - 02.01.2014 09:20:06 - State - off

on/off boiler actuator - 02.01.2014 09:20:14 - State - on

While temp is was still 19.9 (target is 20.0)

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I think it has been resolved.

I expect there was a binding between the termostat and the boiler actuator. I didn't see it in the configuration of the device. but when I added a binding, syncronized, removed the binding again. it seams to be more stable now.

Keep you posted...

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