I don't know if this is a problem with my boiler or somewhere else. Our boiler works okay with the central heating and everywhere else in the house i get hot water when I turn on the taps. But when we try to use our shower there doesn't seem to be enough hot water running through the system to fire up the boiler. to get hot water through to the shower i have to turn a hot tap on at a sink. when i do this, hot water also comes through to the shower although there's not a lot of water coming through. when the shower just has cold water coming through the pressure from the shower head is great. when i turn it to hot water, it turns into a dribble.
when we first turn the shower on, it also makes a funny noise as if air is moving through the system.

sally, September 2009

Hi sally, You have to look at you taps in the bath room ,Do you get hot water there ?? ( yes lets say ) then its your shower mixer Needs to be re placed , (Now lets say No) There can only be 3 thing that can be wrong ,1 your heat exchange is blocked and it gets over heated then gos off and on again ie Hot then cold, 2 It cold be you water sat breaking down and not reading the temp , 3 it could be your d/ vaule not making fully, All the above can be tested , good luck , and please let me know how you get on !!

capitalboilers.co.uk, September 2009