In message , Tim Lamb
writes
In message , Alan
writes
In message , Tim Lamb
wrote
I wonder if someone could kindly direct to the earlier thread on this?

Following a supply outage I have had two PIR controlled floodlights
fail permanently on. The initial failure tripped our domestic RCD
(which is unusual) and took out one lamp. Supply switching the
following night took out the second! GRR..

Are you sure that they have failed? Many of these lights have a
permanently on mode of operation.

The permanently on mode is usually selected by turning the power from
off to on - then on to off - then off to on within 30 seconds.

To revert to PIR mode turn power off for 60/120 seconds before turning
them back on. What may fool you is the light will immediately come on
for the time-out period before going off and being controlled by the PIR.

The supply outage may not have been clean and may have resulted in an
off-on-off-on power cycle to the lights.

Umm..

I did try leaving them off for a few minutes and then back on. I may
not have waited for the full normal *on* time and will recheck.

One of these units is in a poor location as the gas boiler flue is
within extreme range. It seems able to ignore the boiler but triggers
when a frond of bamboo (planted to the side) moves across the sensing
field in strong winds. I already know how to cure the bamboo problem:-)

OK. chaps Panic over! They do go off after the usual *on* time.

Thanks.

Now if only I could get them to stay on by judicious flipping of
switches:-)

regards
--
Tim Lamb