katlego asked ... Rev count on my 1982?    |    andrew asked ... "SECURE" on a yellow backround, and I cant ge?    |    Melodie asked ... How do I remove and change the basket? Duratech Identity Gu?    |    Kathy asked ... Samsung ER-4915?    |    Mark asked ... Oven door removal?    |    Click here to ask your question

how to find a fault?

my sister-in-law has a glow-worm 30c boiler the
central heatings ok but when they turn on dhw tap the water is hot then after a short time it goes cold and stays cold how do i fix this problem
trev, January 2014
could be dhw heat exchanger partially block

A1, January 2014
link Click here to see other fixes for Glow-Worm.