Fibaro door sensor not quite working FGK-101

Hi,
I have a fibaro sensor on a window, I use it to turn the heating off when the window is open.
I have one in my bathroom that is working rather fine (meaning: sometimes it won’t transmit its state :-/), but the other one will always say it’s open.
I made a short video where you can see the blinking led.
I don’t know what’s wrong.

It’s worth noting that some of the time, when I open the window, the “heating off” scene will trigger!
But when I close the window, nothing happens, the “heating on” scene does not trigger…

Video : https://dl.dropboxusercontent.com/u/23066981/2016-03-06%2009.14.20.mp4

PS: those sensors were working 100% of the time with my old vera lite :frowning:

[font=Segoe UI][size=14px] I would recommend to remove and add this device again. If this won’t work then reset the sensor.[/size][/font]

It may be that its too far away from your controller. Mine flashes about 7 times if it cant communicate with it. I originally had my on my front door and it wouldnt turn the light on. when i moved it to the next door, closer to my controller it worked fine.

If you read the reviews on amazon lots of people seem to report short ranges with these sensors.