Strange problem with PIR/motion sensor switch

[Geoffwhite]

Hi, I have an odd problem with a motion sensor switch in a bathroom.
The sensor detects motion and switches the light on, but then doesn't switch the light off.
However, when I switch the fuse off and then on again at the fusebox, it resets the motion sensor, which works fine, but only once - after which, it goes back to turning the light on but not off.
I've tried replacing the motion sensor (it's a Timeguard PIR, with five terminals, including a switched live).
Any ideas please? I can't work out why this would happen?
Thanks!

 

[Barnaby Stedman]

have you looked in the light and checked that there is only a switched live running into it?
also are you sure you are buying the right type of motion sensor?
have you tried waiting for the light to turn off say 10 minutes after you leave the room?

 

[Barnaby Stedman]

have you tried adjusting the time it keeps it on for after you have left the room?

 

[Spoon]

Can you show us how you have wired it up?

 

[Barnaby Stedman]

I know that timeguard pirs can be on for maximum 30 minutes after the last presence detection

 

[Spoon]

I know that timeguard pirs can be on for maximum 30 minutes after the last presence detection

OP probably won't get back to us if he finds out he's stuck it on max time..

 

[Red Tony]

Pics of sensor?
Sounds like it needs time adjusting.

 

[static zap]

( or shield the sensor/bulb if sensor is seeing flicker)
...Max timer most likely as AN & Spoon already mentioned...

 

[MJPD29]

Come back I have so many questions....

 

[Spoon]

Come back I have so many questions....

OP last logged in just after 7pm... Don't think he's going to answer us.

 

[Geoffwhite]

Thanks for all your responses!
The timer is set to the minimum, 30 seconds. The light stays on permanently (or at least, more than an hour). I've included a photo of the wiring set up, maybe that will help!

 

[Charlie_]

What type of lights is the pir controlling?

 

[Risteard]

Interesting colours there.

 

[davesparks]

Interesting colours there.

Normal colours for 3 core, just missing the sleeving/tape.

 

[Charlie_]

Is the pir located close to any heat source?

 

[Risteard]

Normal colours for 3 core, just missing the sleeving/tape.

That was my point.

 

[Risteard]

Normal colours for 3 core, just missing the sleeving/tape.

That was my point.

 

[Octopus]

That's not wired to the mi instructions

 

[Octopus]

That's not wired to the mi instructions