interesting to read your query. We have just had exactly the same problem and were charged £50 cash from a plumber on his way home who was here 15 minutes. on finding it was a thin rubber valve I was trying to locate price of part and came across your question! Hope you have not been ripped off too as I work out that rate is £150 per hour in your spare time!! At least next time we can say we know what the problem is and ask for a quote first!!
sara wilson
April 2008
the diaghramgs in the diverter valve burst quite frequently , thus getting no hot water . When you try to buy a new diaghragm you are told you need to buy the complete diverter valve ( about £100 ) TOSH !!!!
You can buy 5 diaghragms for £5 plus postage online from "boiler Spares "
dave mackenzie
February 2008
your domestic hot water heat exchanger is blocked
ck
January 2008
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.