My boiler is 13 years old but in good condition so I don't want to replace it. We've replaced the diverter valve twice, the last time being just over a year ago. The latest one's been intermittently faulty since last October (doesn't like it when we start using the heating then switch back to hot water only). Last repair cost £240, plumber says now it's the micro-switch so we've bought a new one of those for £8 which he'll fit for £60. Is this likely to work or are we throwing good money after bad?

Sally Boardman, February 2010

get the switch from Maplin for 90pence!

rob, March 2010

Karl - plumber has fitted new microswitch and it seems to have done the job, but unit had to be stripped down to establish that the switch was worn rather than there being a fault with the complete valve. Total cost part and labour £70 - a result against £250 for complete new diverter valve.

Sally, February 2010

Karl - plumber's doing the fix tomorrow, should know after the weekend, not holding my breath!

Sally Boardman, February 2010

hi did you get it fixed i have the same prob

karl, February 2010