My power line adapter has worked flawlessly for a number of years.  My electrician has added a surge protection device in the consumer unit yesterday.   All 3  lights on the power adapter light up however there is no internet connection.    However when I turn off the fuse for the surge protection unit I am able to access the internet.  
 

Can anyone suggest why the surge protection device on the consumer unit is interfering with the power line adapter.  
 

thanks