@kimot I am not handling that situation. I'm taking for granted ssr will do his job. Maybe there's some ssr safety topic I'm unaware? Suggestions for a v3.0 are welcome. About the temperature measuring... I use two sensors. The one in the board protects electronics from temperatures beyond design (60°C). It's near the ssr because the ssr's derating curve is the most limiting condition. The control sensor is placed in the bottom of the heater. It connects to the board through a 3 pin header connector.

You would use PID if you have a temperature feedback from the rooms, but in your case you are not interested so it doesn't matter much. Sure turning off pump when not needed is a good thing. I have colleague that also bought a few netatmo devices to control floor heating of some zones of his house and he is very happy.

@magpern said in MyQTherm - replace IQTherm heating thermostat: I actually am thinking somewhat in the line of discontinuing mysensors network. It is to much, hacks and tricks, and I forget everything in between sessions. I gave up more than once, also over period of years. Recently I came back again and decided to focus on the heart of the issue, getting my radios working and once you get over that, it starts to get fun again. I can respect if you already moved on to something else. I even cheated on MySensors and installed some 433 mhz devices too , just to get something working. You have to keep your interest in HA alive in the meantime. But the reward is great when you get MySensors working. There are "easier" solutions like Tasmota, 433mhz, etc. but not as customizable as MySensors. MySensors is for when you outgrow those other solutions and need something more custom.

I am non technical but I have 8 wirsbo stats in my house. One of them is faulty and the unit is now obsolete. Is it possible to purchase one of these pcbs and use it to replace the one in the faulty stat ? Thanks Richard

@bjornhallberg The sensors are working fine and have been installed in my home for the last couple of years. Some optimisation needs to be done to the code, that i have not done. This is more connected to understanding when the mysensors network is in "range" as i want to fallback on the manual knob if the mysensor network is inactive for some reason or if i sell the house and the controller goes with me.

Yes, it is needed. Almost similar request here: http://forum.mysensors.org/topic/1337/request-new-sensor-type-thermostatically-controlled-switch