How to mend ... Vessel Expansion Boiler

i have a code s.8 on a vailant combi ?

the boiler shows code s. 8 which in the manual means pump over run. what is that and how can i fix it please... [Read more]

worchester 35 cdi 2 rsf, boiler pressure rising?

My worchester 35cdi2 pressure goes from 1bar to 3bar in a few hours, has a new expansion vessel and water to w... [Read more]

Worcester greenstar 30si will not fire up?

I have a worcester greenstar 30si, i have had to renew the expansion vessel and purged gas and water but the b... [Read more]

Worcester Heatslave 20/25 problem?

Worcester heatslave 20/25 oil combi boiler 8 years old problem as follows, with hot water only selected o... [Read more]

High pressure and hot at both rads and water?

I have a canray 5 oil boiler. The circulation pump had ceased and has now been replaced. However I have some w... [Read more]

why is my ravenheat combi boiler losing pressure?

my ravenheat combi boiler has just started losing pressure there are no leaks evedent anywhere on the system a... [Read more]

ideal combi pressure loss?

when i top up my ideal 280 combi to 1.5 bar water is passed outside via safety relief valve.the pressure go,s ... [Read more]

Bosch Worcester Highflow 400 no heating no hot water?

We've had an ongoing deries of problems which Brit.Gas are struggling with... 31 Dec: no heating/hot water - ... [Read more]

Ferroli domicompact F24 B?

My boiler has been losing pressure for some time. Water comes out the pressure relief valve outlet when the ce... [Read more]

Over-pressure on Worcester Bosch Heatslave 15/19?

I'll give you the full story. 2001 Worcester Bosch Heatslave 15/19 oil combi boiler; the pressure gauge showed... [Read more]

Worcester highflow 400 keeps cutting out?

My worcester highflow 400 boiler has been cutting out for the last week or two. We have had 2 engineers out, o... [Read more]

Ferroli DOMIcompact F24B losing pressure?

My boiler has been losing pressure for some time. It only appears to lose pressure when the central heating is... [Read more]

EXPANSION VESSEL PROBLEMS ... Help !!!?

1. when I attach a pump to put air into the vessel, having got it to the correct 1 bar pressure on the pump, t... [Read more]

Expansion Vessel Help needed ! ?

How do you test an Expansion Vessel for faults - should there be air in there when you press the bleed nipple ... [Read more]

How to pressurise expansion vessel?

Vaillant Combi boiler VCW 282 central heating expansion vessel needs to be re pressurised as it is causing hig... [Read more]

Baxi 105HE Expansion vessel pressure!!?

What should the pressure be in the expansion vessel with the system drained ie no pressure.The boiler is a Bax... [Read more]

Ravenheat Littlestar problems ...AGAIN !?

My boiler will be 5 years old in January, every year since it has been fitted, around this time [when you need... [Read more]

Do i need to re-pressurise the expansion vessel?

After repairing a leak on the circuit , I noticed the guage on our Ariston Genus can't get above 0.3 out of th... [Read more]

ferroli combi boiler Pressure?

I re-pressurised my expansion tank about 18 months ago using instructions below:- 1. Switch off the boiler.... [Read more]

Eurocal oil fired boiler - HOT water for 60 seconds them only warm water?

Hi, I’m hoping you can offer some assistance with a 5 years old (Approx) Eurocal Oil-fired combi boiler ... [Read more]