Hi mogwai69,
I have just installed several of these light switches as sold through B&Q although I bought mine from
[Link: tlc-direct.co.uk]They have a better Varilight range - cheaper too! The goods are delivered within two or three days of order.
Back to your problem, it would seem that the Varilight is a bit sensitive to certain codes. I got round this by using Prontoedit to create a page of about six buttons with different codes in and downloading them into the Pronto. Best to not use codes that are in operation elsewhere on your system or you will find that same problem you have already experienced with your TV volume.
By trying each code with the Varilight I found some that worked fine. One didn't work at all and a couple of others needed two presses of the button to make the Varilight respond, which was no good at all.
Here are two of the codes that work for me:
5000 0072 0000 0001 0000 0032
0000 006b 0000 000f 0006 00ec 0006 0036 0006 0036 0006 0036 0006 0076 0006 0036 0006 0076 0006 0036 0006 0036 0006 0036 0006 0076 0006 0036 0006 0036 0006 00eb 0006 0856
Just copy and paste one of them into a button on your Pronto using Prontoedit.
If you only need one, go for the shorter of the two codes.
Check out TLC if you need a remote controlled DOUBLE dimmer switch because B&Q don't seem to do them. When I asked one of the assistants at B&Q I got the usual "Oh, I don't think anyone makes those!"
We use the double switch in our lounge dining room and it works brilliantly. You don't even have to point the Pronto at the switch for it to control the chosen set of lights.
Hope this works for you
Caz