I have an Ariston Margherita AV1247C washer-dryer which I was given with no manual, although using a washing machine is usually fairly straightforward! But sometimes when I use it I end up with no electrics. It only happens as/once the wash cycle has finished. The dryer is set to 0 so it doesn't come on. It is not blowing the fuse for the kitchen, but tripping the overall switch for the house, which I then reset. Is there something I should know about the position of the dryer dial when not required? It only happens when the washing cycle has finished. I did once use the dryer, without a problem. By-the-way, the problem only occurs sometimes. On other occasions I use the machine without incident, either during or after. Can you help me?