Try just using a descaling sachet - worked for us only last night after noticing the premature 'cut out' for a couple of weeks.
Russel Hobbs kettle approx. 2-3 years old.
George
March 2017
You must live in a very hard water area. Either move house or use less water or use the microwave. Your kettle's probably fine if it doesnt need descaling. Check this site for hard or soft water areas: http://www.espares.co.uk/hardorsoftwater.aspx
Tony Beatty
June 2011
mine too. but no leads as to how to fix it.
looks like it will be going in the bin then!
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