Store heating value before opening a window

Setup, Configuration and Use Scripts & Rules
1

Hi,

I’m having a contact on my window and would like to reduce the temperature to 5° once the window is opened. If the window is closed again it should set the temperature again to the value as it was before I opened the window.

My current code looks like this:

‘’‘rule "window"
when
Item Fenster_Wohnzimmer changed
then
if (Fenster_Wohnzimmer.state == OPEN){
Wozi_temp.postUpdate(Wozi_Haupt_Heizung_setpoint.state)
Wozi_Haupt_Heizung_setpoint.sendCommand(5)
if (Fenster_Wohnzimmer.state == CLOSED){
Wozi_Haupt_Heizung_setpoint.sendCommand(Wozi_temp.state)
}
}
end’’'
Wozi_Temp is a Number Item…

It works that the values are stored in the temp variable - but the setting back to the previous state is not triggering…

What am I doing wrong!?

2

The “}” is not set correct…

rule "window"
when
	Item Fenster_Wohnzimmer changed 
then 
if (Fenster_Wohnzimmer.state == OPEN){
	Wozi_temp.postUpdate(Wozi_Haupt_Heizung_setpoint.state)
	Wozi_Haupt_Heizung_setpoint.sendCommand(5)
   }       // <-- This one is missing
if (Fenster_Wohnzimmer.state == CLOSED){
	Wozi_Haupt_Heizung_setpoint.sendCommand(Wozi_temp.state)
   } 

end

In your rule you check for OPEN and within the OPEN-Path you check for CLOSED…(which never occurs…)

Andreas

Edit: Also you used the wrong “´” in your posting. You should use Shift-` on the german keyboard to get the code format the right way…

3

sometimes it is so easy…Thanks!

But now the next Problem: In this line

Wozi_Haupt_Heizung_setpoint.sendCommand(Wozi_temp.state)

I get a type mismatch: Can not convert from state to string error in the designer. Strange - why to string? All of the variables are Number items!?

4

Hello Markus,

Is it only a problem of the Designer?
Or are you getting the error within the logs?
Is Wozi_temp.state uninitialized or undefined after a reboot?

Your rule initializes the value only if you opened the window once.
If it is running well after opening and closing the window, you have a problem with your initial state of the item.

if (Fenster_Wohnzimmer.state == CLOSED){
      if (Wozi_temp.state == Undefined || Wozi_temp.state == Uninitialized)
      {
         Wozi_temp.state = 18.0
      }
	Wozi_Haupt_Heizung_setpoint.sendCommand(Wozi_temp.state)
   }

or ignore the setting while the item is not initialized or defined:

if (Fenster_Wohnzimmer.state == CLOSED){
      if (Wozi_temp.state != Undefined || Wozi_temp.state != Uninitialized)
      {
	   Wozi_Haupt_Heizung_setpoint.sendCommand(Wozi_temp.state)
      }
   }

If this is not your Problem and your item contents a number, try to send the state explicitly as decimal number:

Wozi_Haupt_Heizung_setpoint.sendCommand(Wozi_temp.state as DecimalType)
5

the last hint did the trick … and it is so easy again :frowning: Thanks a lot!