Ideal mini boiler problem

trotter · 3 Oct 2009

I have an Ideal mini combi boiler, having not used the heating all summer, when I switched it on the other day I noticed the pressure was going way too high

Usually it's at just over one when cold, adds about half a bar when heating /hot water is on

It is now just climbing until over 3 bar, at which point I switched heating off.

I turned the radiator water heat dial down (the boiler has one dial for tap water heat and one for rads) which still gives me nice hot rads to be honest, and the pressure only climbs to just over two and stops climbing

But obviously something is amiss... any ideas ?

glasgowgas · 3 Oct 2009

expansion vessel has lost its pre charge

check faqs at top of page

Dick Puller · 3 Oct 2009

This is a rebadged Biasi boiler that may have a faulty expansion vessel, best to get a Gas Safe RGI in to have a look at it.

By the way, they are great wee boilers, easy to work on & when & if they break down parts are readily available.

Dick Puller · 3 Oct 2009

Mon the Gers!!

trotter · 4 Oct 2009

glasgowgas said:
expansion vessel has lost its pre charge

check faqs at top of page

Thank you

I did a search or 3 and thought that was the problem

Can I 're-charge' myself?

bengasman · 4 Oct 2009

Yes, you can. Bicycle pump does the trick.
Drain some water from the system until gauge is close to 0.
Pump vessel up to about 1 bar.
Top up system to 1 bar.

trotter · 17 Oct 2009

Seems to have worked, thanks a lot, really appreciate it

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

Ideal mini boiler problem

trotter

glasgowgas

Dick Puller

Dick Puller

trotter

bengasman

trotter

DIYnot Local

Similar threads