Led Pir Flood Light Staying On

[Barx]

Anybody been witness to this behavour.

I recently replaced a 150w PIR flood light with a 3w LED PIR Flood. Well happy with the light level as it's just for the side passage of house and the 150w was overkill and thus wasteful.

Anyway I've noticed a couple of times that it comes on (usually triggered by neighbours cat) and then doesn't go off. Like, all night. Obviously with it being only 3w, this isn't detrimental but I would like it to function correctly. If I turn it off at the spur for 20s then back on, it will turn off on the timeout. I'm sure when I went out the other night, even though the light was on, I heard the relay click as though it was kicking in. though it was already on.

Any ideas? checked it for damp and other conductables, nothing spotted.

 

[Marvo]

When it overruns in the on does it get any dimmer after the time it should have switched off or does it stay on full brightness all night?

Is the output of the PIR definitely a relay or could it be a solid state switch? Solid state switches such as diacs and triacs can be incompatible with the electronics built into in the LED lamp. They're notoriously trouble with CFL lamps as well. If the sensor and lamp were sold as a preassembled unit this shouldn't be the case though. What is the make and model number?

 

[Steve3948]

Is this an all in one or seperate

 

[steptoe]

yer, good point, if its seperates there may not be enough loading sort of thing, bit like the CFL/LED flickering effect indoors.

 

[SLIPSHOD & SLAPDASH]

Ditto above comments

 

[Barx]

Bah, eiither i'm going crazy or I already replied to this and it has vanished. Probably the Former.

Anyways, thanks for the replies. Additional info:

It is an all in one pre built unit.

Light does not dim, full brightness all night

I'm only assuming it's a relay due to hearing the clicking noise.

I thought it may be the  cold weather doing something, so will monitor it now it's getting a little warmer and see what happens.

 

[Barx]

yer, good point, if its seperates there may not be enough loading sort of thing, bit like the CFL/LED flickering effect indoors.

yeah, i thought maybe that, or they are being parasitic to some induced voltage from somewhere.

 

[Steve3948]

Are there any fluorescents on the same circuit ?

Maybe in test mode it works, but not in normal use, so maybe faulty.

 

[Bruspark]

Pull it off. Take indoors and attach short flex and 13A plug. Test in dark. If still faulty return it

 

[Barx]

No flourescents, its spured off a ring. It can work fine for 3-4 days at a time. As said, going to keep an eye on it and next time it does it see if the relay is clicking in and out, etc.

Thanks again.