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Vaillant Turbomax plus 828e combination boiler?

Hot radiators, but luke warm water from the 'hot' (bath etc) tap elsewhere in the house although the water temperature from the taps rises slighty if I turn down the pressure of the (bath) tap so the water just trickles out. If I turn the 'hot' (bath) tap on full the water goes back to barely luke warm again. The boiler is just over two years old. Any suggestions please to fix the problem.

Graham
March 2007
VaillantHeating, Home Heating SystemsVaillant Turbomax Plus Boiler
pressure gauge up to 3/4 bar and discharging water constantly
Any ?s

Richard
May 2016
Have you tried the hot water divertor valve? easy and cheap to change and a common problem with these boilers.

Gavin
February 2011
check the working gas pressure at the boiler,low pressure will cause this.or you might have a blocked heat exchanger.

homer heating services ltd
December 2010
This could be a blocked secondary plate heat exchanger. This may need to be removed and flushed out.

me
March 2010
couldnt say def without looking at it but it sounds like either the domestic hot water temp control

dp
February 2008

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