AD10 - clunks but doesn't always turn on the light ?

[Marcus Warrington <marcusw@xxxxxxxxxx>]

I've just finished rewiring the the hallways and dining room for X10
control, but have a small problem that I hope someone can solve for me.
The dining room has a dropped central ceiling that has strip lights
around the perimeter that act as concealed wall wash lighting.

The central cieling is approx 3m x 4m and has one flourescent tube at
each 3m end and 2 tubes along each 4m side, giving a total of 6 tubes
(around 350-400watt). These are chain wired one to the next and are
(now) fed from an AD10 mounted in a consumer unit hidden on top of the
dropped ceiling. The wall switch has been replaced with a momentary
switch to toggle the AD10. I've also had to put a plugin filter in-line
between the AD10 and the strip lights otherwise they become
"invisible"
to X10 commands when turned on.

If this doesn't make a lot of sense I've uploaded some pictures that may
make it clearer..

http://www.marcusw.dsl.pipex.com/webalbum/Dining%20Room/slides/CIMG0674.
html

http://www.marcusw.dsl.pipex.com/webalbum/Dining%20Room/slides/CIMG0672.
html

You can also see some pictures of the touch screen monitor I've sunk
into the wall (although I need to sink it a bit more to get the
stainless steel bezel installed flush) , this is connected to an old
PIII 500mhz machine that runs XLOBBY for MP3 selection/playback in the
kitchen and dining room. The soundcard is feed into a Sonic Impact T-AMP
and feed to speakers above the wall cabinets in the kitchen and to some
speakers (tempory fix) in the dining room.

Now this all works but occasionally (maybe one time in ten) the AD10
will "Clunk!" but the lights don't come on. If I press the switch
again,
then there is no clunk and nothing happends, press again (third time)
and there is a Clunk and the lights come on. Usually this only happens
when the lights have been off for a few hours (overnight). My best guess
is that the relay is firing but not latching i.e. going back to its off
state even though the AD10 firmware "thinks" its on... Question
is why
and how do I "fix" it ? Is it to do with the strip lights or does
it
sound like a faulty AD10 ?

Marcus



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