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Can you top up Worcester boiler without key?
Our Keyless Filling Link allows you to quickly and effortlessly re-pressurise your system without the need for a separate key.
What happens if boiler pressure is too low?
Most modern boilers usually need little attention beyond an annual service and an occasional glance at the boiler pressure gauge. This tells you the pressure of the water circulating in the heating system. If the boiler pressure is too high, there’s an increased chance of leaks developing in the system. But if boiler pressure is too low, the system won’t work as well. So keeping the correct boiler pressure is important to make sure that your system heats your home efficiently.
Why can’t I increase the pressure in my boiler?
Summary –
- Check the pressure gauge on the front of the boiler to see if it has low pressure.
- Causes of low pressure include leaks and recently bled radiators.
- The boiler’s pressure should sit between 1 and 2 bar
- You can increase the pressure by putting more water into the system via a filling loop.
- Call a Gas-Safe engineer if the problem isn’t resolved.
Can you add pressure to a boiler when its on?
How to increase boiler pressure – If your boiler pressure gauge needle is below 1 bar or in the critical red zone you will need to repressurise the system. To increase the boiler pressure you will need to add mains cold water to the system using the external filling loop.
Make sure that the boiler is turned off and completely cooled down before you start. You should only have to increase the boiler pressure once or twice a year. But, if your boiler keeps losing pressure this could mean that the water from the system is leaking. Please always contact a Gas Safe engineer to repair the boiler if you spot a leak – you can find an engineer near you with Gas Safe’s – Find An Engineer Tool.
Ready to top up? Head to our full guide on how to fill a pressurised heating system, If you have a combi boiler like a Worcester Bosch, you can easily repressurise the system using the keyless filling link. at the bottom of the boiler. 
Can I fix low boiler pressure myself?
How do I fix low boiler pressure? – When a boiler’s pressure is too low, the system will need to be repressurised in order to function again. You can do this yourself by operating the system filling loop. A filling loop is simply a device that is used to introduce water into the heating system and can be found somewhere on your system.
In some cases these are at the appliance, in other cases they can be found elsewhere. Different filling devices operate in different ways due to their design but fundamentally they open a tap which allows water to travel into the system pipework. Its important that this is controlled correctly so please refer to any instructions that are specific to the type of filling loop you have.
Click on the video to watch ‘How to repressurise your ecoTEC pro boiler’
Should you Repressurise a boiler yourself?
If you’re having problems with your boiler, like no heating or hot water, loss of water pressure might be to blame. The good news is low boiler pressure is relatively easy to spot – and you can often put it right yourself. So, here’s our quick and easy guide to re-pressurising a boiler.
Why is the pressure low on my Worcester boiler?
A leak is the most common cause of a boiler losing pressure, but it could also be caused by: an expansion vessel problem. a pressure relief valve problem. a filling loop problem.
Why won’t my Worcester boiler fill up?
Welcome to Aquaheat. This is a quick video on how to fill up your central heating system with an external filling loop. So here’s one that we fitted today on a new boiler. So we’ve got the, this is an external filling loop from the boiler, we’ve got a flexi hose here.
- Now, this is generally how it’s supposed to be left when it’s not being connected.
- However, you may find, a lot of times, these are still left connected.
- I’m gonna just run through how to do it.
- First of all, we’ve got to take these caps off.
- All of this stuff is hand-tight, so you don’t need any spanners.
Undo this one. Put that on, hand-tight. Put that on, hand-tight. Now, what we do is, here, open this, this is our cold, this is our central heating going in there. Turn that, so it’s perpendicular to the pipe, it’s in line. We can see that now this has livened up, all the cold’s come to here.
However, I’ve got this one closed. Once I open that This is our pressure gauge here. Now, our pressure’s fine at the moment, it’s perfect, it’s on the heat test, it’s coming up to under 2. But if that was like low, it’d be below 1 at zero, so I would then open this black one in line with the valve, and then I would make sure the heating’s off at the same time, by the way.
I’d watch that black needle, I’d hear water rushing in, going up to 1. When it gets to 1, I wanna start slowing it down, if it gets just above 1, then we just crack it off. Turn that one off, then we turn this one off, then that’s it, it’s filled up. If you find it’s not filling up, then it’s either your valves here are old and jammed up, or you may have a seriously bad leak on the system, so But if it does work, then that’s it and that’s topped up.
Now what we do, we’ve got to take this hose off. Now, there’s gonna be a bit of water in here, little pressurised water, but it’s shut here and it’s shut here. So I’m gonna undo this one. This is the clever bit so you don’t get wet. Undo that. Little squirt. I put my finger over there, my thumb, and then I undo this one.
That creates a vacuum, and allegedly holds the water in. And then we undo that one. I’ve got a nice little container here. There we go, it just all drips in there. Now, put our caps back on. So Make sure you put these caps back on ’cause these start leaking, and you are supposed to take this off, and the reason why is for The Water Board doesn’t like you leaving that connected ’cause of contamination of their supply, potentially, if either of these valves start to leak.
- Pop that in there, pop that in there.
- We’re good.
- That’s how you fill up a filling loop.
- So, please watch that again if it was I was going a bit too fast and there was something that you didn’t really catch, but it’s pretty straightforward and Yeah, thank you.
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More videos
What happens if boiler pressure drops to 0?
Too little pressure (not enough water within the sealed system) will result in an inadequate flow of water to heat your radiators or water. Too much boiler pressure and the water will pass through the system like a Vindaloo to an uninitiated westerner.
Do boilers leak if pressure is low?
The first sign of a leaking boiler might be that it cuts out due to low pressure. And even after you top it up, it loses pressure again quickly. If that happens there are a couple of things you can do: Take a look at our boiler pressure guide to see if you can fix this problem.
Does bleeding radiators reduce boiler pressure?
Bleeding radiators can lower your boiler pressure, so it’s a good idea to check if your central heating system need to be re-pressurised at the boiler. Your boiler pressure should be between 1.0 to 1.5 bars. If it’s less than this, you’ll need to top up the pressure.
Where is the key on a Worcester boiler?
It is operated by a key which is located in the removable panel beneath the boiler. An integral method. This is connected to and found beneath and to the right of the boiler.
Can I leave the key in a Worcester Bosch boiler?
Plumbing Tips | Plumbers and heating engineers South West London First of our plumbing tips is, take a look at the pressure gauge on the front of the boiler, the needle will tell you what the pressure reading is on the boiler. If you find that the needle is pointing to “0” it means that you need to put pressure into the system because the system is running on empty.
To do this is quite simple; here are our step by step instructions. Before you start, make sure that you turn your heating off. In the video there is a tray underneath the boiler, which the plumber takes off. On some of the other models of boiler there isn’t a lid underneath. If there is no lid underneath your boiler, then you will often find that the heating engineer will have left the key already inserted into the boiler (to ensure that it doesn’t get lost).
On the boilers that we install, we will usually leave the key in for this reason. As this boiler has a tray underneath, you can see that the key is slotted nicely into the lid underneath the boiler. Once you have the key, slot it into the black housing.
- On the housing you should be able to see a padlock symbol showing both an unlocked and locked padlock symbol.
- Push the key up into the unlocked position and turn it to the right – to lock it into position (following the locked symbol).
- Now that the key is in the right position, you should be able to see a nut next to the key – turn the nut in an anti-clockwise direction.
At this point, you should be able to hear water going into the system. At this point, be sure to take a look at the pressure gauge, where you should see the black needle on the pressure gauge begin to rise. When the needle reaches between 1 -1.5 close the nut in a clockwise direction (just hand tight).
- Once you have closed the nut tightly with your hand, you can then turn the key underneath the boiler back to the unlocked position.
- Then, depending on whether you have a lid to keep your key in, you can either take the key out or leave it in the boiler (to save it from getting lost).
- Then replace the lid on the bottom of the boiler.
That is how you top up a Worcester Bosch Boiler with the internal filling link. If you would like more information on any of our plumbing and heating services, then please contact us via email, telephone or online form. We cover all areas in South West London.
Why won’t my Worcester boiler top up?
What causes a Worcester boiler to lose pressure? – There are many causes for a Worcester boiler losing pressure. The most common cause of a Worcester boiler losing pressure is a leak, this could be on the boiler or anywhere on the central heating system.
