Hi folks - hope someone can shed some light on this...posted in here rather than electrics as I figured this is more down to PIR switches and how they work.
We've got a security light in our carport thats started behaving oddly.
Basically the light won't turn off - we noticed it 2 weeks ago when we got back from a wedding - the light was on but after it's 'lit duration' was up it tried to turn off but kept coming back on again (turns off for a split second but then turns on again). I figured the light was bust so off I went to screwfix and replaced it with one of these...
http://www.screwfix.com/prods/60221...ghting/Asymetric-120W-Graphite-PIR-Floodlight
This light is also refusing to turn off - it stays on at reduced power (almost like dusk to dawn lighting) even though it's not meant to have this feature (it's only meant to be active from dusk to dawn but not on permanently). When you trigger the PIR it comes on at full power for the desired duration but then instead of turning off drops back down to half power or whatever again.
I know the issue with the original light wasn't the photocell picking up on the light as it was not flicking on and off when the PIR was being triggered - only when it was meant to be off.
Can anyone shed any light on why these PIR switches are behaving like this - could it be down to a lack of power at the light (cabling issue etc.?) that's not providing enough power to the switch? The setup has been in place and worked fine for years...
We've got a security light in our carport thats started behaving oddly.
Basically the light won't turn off - we noticed it 2 weeks ago when we got back from a wedding - the light was on but after it's 'lit duration' was up it tried to turn off but kept coming back on again (turns off for a split second but then turns on again). I figured the light was bust so off I went to screwfix and replaced it with one of these...
http://www.screwfix.com/prods/60221...ghting/Asymetric-120W-Graphite-PIR-Floodlight
This light is also refusing to turn off - it stays on at reduced power (almost like dusk to dawn lighting) even though it's not meant to have this feature (it's only meant to be active from dusk to dawn but not on permanently). When you trigger the PIR it comes on at full power for the desired duration but then instead of turning off drops back down to half power or whatever again.
I know the issue with the original light wasn't the photocell picking up on the light as it was not flicking on and off when the PIR was being triggered - only when it was meant to be off.
Can anyone shed any light on why these PIR switches are behaving like this - could it be down to a lack of power at the light (cabling issue etc.?) that's not providing enough power to the switch? The setup has been in place and worked fine for years...