I've got an outside light that has a small 1/4-1/2 inch dia. (whatever is
std) photocell sticking through a hole on the side of the post to control
the light (on at dusk off at dawn). Trouble is its instant on/off so in
certain light/weather conditions it flickers for 5-10 minutes or so. Where
can i buy a replacement that has a built in on-delay of at least 10 minutes
and preferably a half hour? (I dont care about off-delay one way or the
other, just the on-delay)
It doesn't sound like you can point the photocell in a different direction.
How about making a shield ? A couple inches from the core of a toilet paper
roll or towel roll would be enough to experement with to see if stray light
is triggereing it.
This was a replacement, and its just a very poor design, there doesnt seem
to be any hysteresis in it and so it just wavers from on to off (flicker)
until it finally gets dark enough. Its got a shield already.
I don't know about a replacement for that small of a unit. You can usually
buy photocells that will fit into a 1/2" trade size (7/8" diameter) at a
local electrical supply company. You could drill the hole bigger with a
unibit. Have you tried to find a replacement at a lighting store? If you
pulled the unit out there might be a manufacturer's name on it.
if it didnt alwas flicker just replace it. mine goes bad very 4 or 5
years, its so cheap and easy to replace i havent bothered upgrading
flicker is one of 3 failure modes. always off the most common, always
on rare and flicker.
high current at bulb burn out is generally what fries the controller,
you know when a bulb goes brilliant white for a second.
I buy lng life bulbs to minimize such events Tried CF, low energy use
nice but more control failures.
these controllers must cost under a buck to make, they are really cheap
Hey Eric, I used to work in the Electrical/Lighting department of a large
hardware store chain here in Canada. I haven't heard of that problem with
post light photocells. I wonder if the CDS cell has gone bad or something.
Have you tried replacing just the photocell unit? I sold them at my store..
I've got it fixed now, the original one quit, then i bought a replacement
which was just a very cheap cell. it had no delay on or delay off at all so
when the light was just right it flickered something awfull.
I just bought a decent cell to replace that one and its working fine now.
Guess you get what you pay for...
What direction is the photocell facing?
Mine faces west and I live in northern hemisphere. I understand they should
face north to properly work.
You might experiment adding a short tube to the photocell to control how the
light levels eventually cause it to work properly.
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