Trying to select a programme, but the buttons seem to be "frozen". Tried to hold the pause button for a number of seconds while switched on and switched off, but nothing happens. Managed (somehow) to get it to work accassionally, but now nothing seems to clear it. No red lights on, so not low on salt or rinse aid - Help !

The machine is an intergrated Lamona slimline Dish Washer

Tony Masterson, May 2013