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if you haven't already bought the liquid then my recommendation is to use the filler cartridges as these are much better for sealed systems. The mastic gun gives you the way to create enough pressure to put the cleaner into the system. for sealed systems the liquids are really designed to be...

i had a very badly bunged up boiler and have used Fernox and now to water is clear and the banging and noises from the boiler have gone. Fernox is quite expensive but not as expensive as a system flush. I picked up on how a British Gas engineer rigged something up to inject the stuff into...

if the boiler is shutting down after 5 mins then it could be overheating and the overheat protection could be cutting to shut it down - usually there would be a lot of banging and hissing of steam from an air vent in the boiler if this is happening. The reason for the overheat is often the...

i have a glow worm and these have a generic problem with pressure relief valves (prv) - this is a unit that protects the system if the pressure rises to 3 bar - it then releases water outside - you should see a copper pipe running from just under the boiler to outside the house - selotape a food...

it does ineed sound like the pump - had identical problem a while back myself and it was the pump that had seized up. with no pump turning the water in the boiler just boils causing almighty banging and whistling usually and then the boiler usually ****s itself down with an overheat protector...

that i have for the 30 si/ci f1 means ignition fault caused by no gas detection. again according to the manual this points towards the gas control valve being fault or perhaps the step motor i think these will need a professional to look at

my boiler used to make horrific noises and really scared me that it was going to blow up. Basically this tends to be because the flow is resticted and it then 'kettles' i.e. boils and bangs like a bag of spanners. I read around these forums and decided to give it a thorough clean. It's now as...

i would say John is right and possibly there is an air lock in the pipe to this last radiator. I had same problem once. Shut off all the other radiators using the lock shield valves and this will have the effect of 'forcing' all the flow from the boiler to the cold one. Chances are that if...

sounds like it could be the expansion vessel has stopped working - this is usually built into the back of the boiler unless you have an external one fitted. If in the boiler then it's usually right at the back and is a bit like a hot water bottle. It's job is to absorb the increase in pressure...

Folks, Decided that the most likely place for a leak would be at each tail end of the radiators so connected 3 drinking straws together for length then taped a cotton bud to the end and routinely went around every radiator on the ground floor to (no stains on ceilings so confident not upstairs)...

Oilman, BG did indeed drain down the boiler, then put the pressure gauge on the valve to see what pressure it was holding - between 1 and 1.5 bar. He then checked the small tube linking the vessel to the boiler to make it wasn't blocked. There didn't seem much else he could suggest to...

Paul/oilman, Thanks for the responses. Actually I have suspected the expansion vessel in the past because a few weeks back I noticed a significant rise in pressure when hot - much more so than it used to be. This is why I checked the PRV first. I got British Gas to check it out and it was...

Folks, I'm urgently seeking advice to get my heating going. The boiler (Glow Worm 30si) now loses all pressure in about two hours and so cuts out until I re-fill. The PRV on these things has been an issue so was the first thing I checked and it's fine - no water coming out of the pipe (put a...

thanks for the advice - I have an external vessel and so do I still need to drain down the boiler before putting pressure into it?

Folks, I've trawled the posts and it seems my Glow Worm 30si is exhibiting symptoms that may point to problems with the expansion vessel - that is the cold pressure of 1 bar shoots up to 2 bar when hot and although the prv supposedly cuts in at 3 bar I have drips coming out of the pipe from the...

Folks, I have an upstairs bathroom shower tray fully tiled in with ceramic tiles. A nasty line of damp stain has appeared below this in the hall. I am faced with pulling down the hall ceiling as this would be much cheaper to repair than pulling up the tray and tiles. Before I look at doing...