Thanks for the replies!
I'll keep an eye on to see if it comes on and I'll have a look for a reset button.
If I had to get a new clock, would I be able to fit it myself or would I need a boiler person or an electrician?
thanks
Marc
I've recently moved into a new flat and it is fitted with a Powermax 155x boiler. The boiler works fine in 'Constant' mode and the water heats up. However, there is nothing displayed on the LCD so I'm unable to set any times - the buttons don't appear to do anything and there are no lights on...