i have a ravenheat silverstar combi boiler and the hot water runs for a few seconds then turns cold even with the shower tap fully open after a while it runs hot then cold again. any help is appreciated

fred larcombe, August 2015

I hate working on ravenheat boilers
I feel sorry for the poor sods that have been lumbered with this lemon of a boiler
If you don't have a manufacturer warranty with this boiler don't waste your money on repairs
Start saving up for a decent boiler
Check "which" website for the most top rated boilers as voted for by end users

Q, August 2015

hot water heat exchanger blocked need cleaning, not diy job

ltd, August 2015