My dishwasher DF42N hotpoint is displaying the letter E and number 10 what ?

If you use a search engine such as Google or Microsoft's Bing and enter the search phrase
"Hotpoint dishwasher error code E10"
not forgetting to include the quotation marks
you will get just seven results
The fault will be revealed to you
You may need to call in an engineer

Good Luck...
March 2017