Boiler Requires Repressurising.

keerthivasan1987

Hi,

Boiler Model : Main System Eco
Fault Code : E119 (Pressure lower than 0.5)

There are 2 valves underneath the boiler. I adjusted both and nothing changed as per some videos on youtube.

About myself, am very new to doing DIY and tweaking boilers. I bought a house and moved in just 2 weeks back and I had this problem today. Wondering whether I can do this by myself or should I need to shed some money to bring someone in?

Please let me know. Thanks in advance.

silvercar

I suggest you post a picture and then the experts can tell you which valves you should be using.

The alternative is to get someone in and watch what they do for future reference.

keerthivasan1987

Hi,

Here is the link to view the image.

drive.google.com/open?id=0B_VK_DmbceefV3QzZHU5NVVkRWkyd3dNMnJGWHM5OTRSMVRv

drive.google.com/open?id=0B_VK_DmbceefZmg5TEhsaXN1RVhmdllUQ2hmVXRVT3VCR3pN

Remove the space in between the link above (Eg : In between 'O' and 'T' on the first link). For some reason it shows a space whereas when I edit, the space is not shown.
Thank you.

Box28

The valves on those pipes are just isolating valves for the forward and reverse central heating pipes.

To pressurise you have a flexible braided hose from mains water to one of the central heating pipes. It may well be located in a different area, doesn't even have to be near the boiler.

The braided hose is normally not left in situ and you screw it on between the two pipes. Then open the valve for maybe 10 seconds then check the pressure on the boiler. If not adequate do it again. You want it at about 0.8 to 1 bar.

Nathaniel_Essex

I've done this before. I would advise finding instructions online and taking a picture of the valves before turning any so you know which position to put then back in case you screw something up.

Related question - When I moved into my home the boiler needed pressurising after 10 months of us moving in. Now it seems to be every month I have to do this. Any reason why?

Box28

Providing all your radiators have been bled of air and you don't have automatic air vents on the rads you likely have a leak somewhere. If all the pipework, radiators and valves are fine then also look below the boiler itself for any water dripping.

Then check the discharge pipe which is the one that goes from the boiler to the outside wall. That can also drip if the pressure release valve is not seated properly. When the boiler is working and hot - what pressure does it go to?

Ectophile

https://drive.google.com/file/d/0B_VK_DmbceefV3QzZHU5NVVkRWkyd3dNMnJGWHM5OTRSMVRv/view

https://drive.google.com/file/d/0B_VK_DmbceefZmg5TEhsaXN1RVhmdllUQ2hmVXRVT3VCR3pN/view

From the manual http://www.mainheating.co.uk/docs/main-system-eco-elite-installation.pdf it looks as though the filling loop isn't part of the boiler, which is a bit unusual these days. So have a hunt around for a flexi hose with a valve at each end. Or two valves that look like they ought to be connected by a flexi hose.

MoneySavingMole

Nathaniel_Essex wrote: »

Related question - When I moved into my home the boiler needed pressurising after 10 months of us moving in. Now it seems to be every month I have to do this. Any reason why?

You may well have a 'flat' expansion vessel.

You'll need a competent gas safe registered engineer to attend, service the boiler and check/repressurise your boiler expansion vessel.

This isn't something I'd advise you do yourself, as it will entail removing casing and accessing the boiler.

Box28

As long as the sealed chamber is not removed and you can access the expansion vessel you can do it yourself. The outside casings are just cosmetic. But before you suspect expansion vessel check what pressure your boiler hits when it's hot. If it is going close to 3 bar, then expansion vessel is possibly flat or damaged.

southcoastrgi

Look in the airing cupboard next to the cylinder

PC1985

try baxi.co.uk/service-and-repair/boiler-faqs (I'm not allowed to post link as new, so put www. in front)

this might help, but it looks more complicated than just turning a knob (i wouldn't do it myself as I'm not that sure with boilers)