Boiler pressure loss

ady.nicky · 5 Oct 2005

I have Vokeira 80/20 Flowmatic combi boiler.
I am loosing 0.5 bar in pressure daily and am having to continually top up. When i run the hot water my radiators are also coming on! The temparature seems to rise high up until the point the boiler makes a few bangs then on some occasions shuts down and the pilot light goes out....help!!!

kevplumb · 5 Oct 2005

check the pipe that goes outside is it wet when the boiler bangs

ady.nicky · 5 Oct 2005

I checked this last night but could find no evidence of a leak. I also checked all radiators.

ady.nicky · 6 Oct 2005

After rechecking last night i can confirm the pipe leading outside is dripping ( i was looking in the wrong place before). So from what i have read on other messages am i right in thinking the PSV needs changing?

kevplumb · 6 Oct 2005

PRV it probably will
chances your expansion vessel will need recharging as well

ady.nicky · 6 Oct 2005

Thanks alot for you help.
Should that solve the problem of the radiators sometimes coming on with the hot water ?

kevplumb · 6 Oct 2005

wouldn't think so
thats more likely to be a sticky diverter or flow switch

not really familar with the model

bogstandard · 7 Oct 2005

Cleaning the pressure release valve's seating arangements can usually make it water tight once again Then never use it to release water, as crap floating around the system can bridge the seal once again.

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Boiler pressure loss

Similar threads