Combi boiler temperature

[RoyL]

We have Britony combi boiler and just recently the boiler has been venting water out of the relief pipe outside, I have to top up the pressure each day, (down to .5 bar), the radiators also occasionally make a bubbling noise and seem to be a lot hotter than normal, we also have a problem maintaining hot water to our shower, it appears to be some sort of temperature control fault, can anybody help.


TIA Roy

 

[kevplumb]

first renew the prv that is where your pressure is going

whats the system pressure hot / cold

 

[ChrisR]

Is there a thermostat you can turn down/play with ? Obvioulsy it or its sensor could be letting the water get too hot.

Showering problem is more likely to be sludge if problem didn't arrive at same time as overheating.