Combi Boiler Too Much Pressure - How to reduce the water pressure - Central Heating
ฝัง
- เผยแพร่เมื่อ 30 ก.ย. 2024
- CENTRAL HEATING. How to reduce the pressure in your Combi Boiler. How to take some pressure out of your combi boiler. Central Heating. High Pressure. Expansion vessel. combi boiler. So if you have a look at your pressure gauge and there's too much pressure in your boiler, we're going to take a look at that, show you how to reduce the pressure in the boiler, and also just go through some of the causes of why you may have too much pressure.
So first of all, we'll look at the filling loop underneath the boiler and we'll see if that's been left open. So let's have a look at that now. When we look at this, we can see this side is open, so that means this here, that should be closed like that, if you can see. And then that one that there is closed as well. If they were both open then they'd be like that and then your pressure gauge would continually just go up all the time.
So after you have filled the boiler, normally we would only fill it to about one when the boiler is turned off and the boiler is cold. So if you've done it to one, always make sure you turn these back off.
I'm now going to go through a few different ways of how you can reduce the pressure, and then I'm going to go through, if it happens again, then what ever problems you may have.
So on this wall we've got filter just underneath the boiler and by just undoing the filter under here, this will take the water out of the system, or take some of the water out of the system, and that will lower the pressure, so I'll show you that now.
So you can see this pressure gauge is up there at two and a half, and then if we just open this here, and we start to let some water come out, we can see the pressure gauge, we can see the pressure gauge goes back down. If you've taken a lot of water out like that, and that pressure gauge is still stuck up there, then it may be you've got a faulty pressure gauge. So what I'll do now is I'll just tuck this back up a little bit and then what we'll do, I'll show you some other ways if you haven't got a filter that you can do. So again, I'm just going to overpressurize it, and then now what we'll do is we'll go to a radiator.
Doing it from a radiator can take quite a lot longer, but what you do is just bleed it, get a jug or something to put under there and then just drain into your jug. You might need a cloth underneath as well because it'll probably drip. And just be careful not to undo it too much with this key. If you undo the out too much, sometimes that can actually shoot out and then you'll be in the right mess then. Doing it this way might take quite a while because you're only taking a right little bit of water out at a time. So what you'll have to do is do this and then close it, and then go back to your boiler and check. You can always put more pressure back in if you need to, so we're going to a look at the boiler again now. When we look at the boiler, the pressure's gone down a little bit, but as you can see if you're going to do it from a radiator, that's going to take quite a while.
You could also undo one of the nuts underneath, if you've got somewhere where you could undo one of the nuts and you could let some of the water come out a bit. But obviously you have to be really careful with that. Also, it may be that you've got a drain off valve somewhere on your system and if you have, you could just put a jug underneath and then just undo your drain off part of it. Obviously that would be on your system like that. So that's another way that you can take the pressure out of the system.
If you've managed to get your pressure back down to one, then what you need to do now is when the system's cold, you want the pressure to be at one bar. Just round about one bar. And then when you heat the system up, so you've checked all valves and everything's turned off underneath, except one bar, system's cold, and then you put your heating on and this pressure gauge, it'll start to go up, but you only want it to go up a little bit. If it starts going back up to over two or a three bar again, then that would indicate you've got a problem with the expansion vessel inside the boiler. And it may be that it needs servicing, it just needs the expansion vessel pumping up. It may be that you need a new expansion vessel, but more than likely it'll just need pumping up.
It could also be that the expansion vessel is undersized for the size of system that you've got. So if you've got a really large house, then expansion vessels in boilers are only normally seven, eight, nine litres. So they're not really designed for big massive houses. So it could be that you need an additional expansion vessel.
If you found this video please consider adding a donation to our chosen charity. Thank You www.justgiving.com/fundraising/cchleeds
Keep up the good charity work
@@CommercialGasEngineerVideos All the money from this youtube channel is donated to charity. Thank You for your support.
Thank you I will donate! You helped me so much very quickly too! God bless you always!
Thanks for your video, it is easy fixing of a big problem ❤❤❤
just followed your instructions, after mistakenly over pressurising the boiler😊
Thank you
Thank you so much for your very clear video. You have explained the principle so well. I have looked at a number of videos before coming across your excellent description of a closed system.
Thank you for taking the time to watch my video.
And I thought all plumbing and gas engineers were money grabbing bastards . What a lovely bloke who not only knows his onions very well but explains things so well a teenager could do it. Top man Allan 👌👌👍👍👍
You are very kind. Thanks for the visit. Did you subscribe 😂
@@AllenHart999 done that when I watched it fella lol 👍👍👍
I thought exactly the same mate. You can tell by the way he speaks that he’s a good’un 👍.
Another great informative video. cheers mate 👍
Thank you.
I would install a filter when I get a new home
Thank you
I was at 3 bar in the red. Followed this and bled a rad, I took out about 800 ml and now I’m on 1.1 bar thank you 🙏🏽
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Me too, so thank you ever so much 👍
Allen Hart...with a big heart. Thank you sir.
Bleed the rad and it works.
You’re doing a great service to people.
We appreciate it. Happy Christmas! 🌲🙏
Happy Christmas. Thanks for watching.
I bled one of my radiators and it worked! Thanks for sharing
Hi Alan, thanks for that very comprehensive explanation on releasing the pressure... I’ve been googling for ages and you’ve hit the nail on the head 🤙🏼🤙🏼
Thank you
Hi
I’ve replaced a towel rail like for like in my bathroom. Initially the water pressure in boiler dropped to zero. I opened tap and pressure started going up to 1. Then it continued going up and is now over 3. I’ve drained loads out of rads but gauge hasn’t moved?? The heating and water is working fine but the copper pipe outside is dripping. What should I do??
Do you know if the filling loop is turned off correctly ?
Thanks very much for your comment, please consider subscribing to support the channel 🙂
That drain it via the Radiator was the method I use(d) - but I hardly drained any water before the pressure dropped from over 2 to just 1.5 bar. Excellent video - thankyou!!!
Even when I bleed radiators it’s staying at 3 bar mate. Any idea how to fix? Thanks
If you found my video useful please add a comment below and thanks for watching. PS like and share😂
Desperate for help if u can left a comment below. New years day and no chance of help
Siobhan Stephenson Give me a call and I will try and help 👍
Omg u star!! How do I find ya number plz
@@AllenHart999 how can I find your number plz
@@siobhanstephenson8564 Happy to help you. Hope its all sorted.
Dad is away on holiday, I ended up putting too much pressure in the boiler, using your radiator method manage to get it right. Thank you mate, really saved the day👍👍
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Amazing amazing amazing !! What a lovely person..muah..I fixed my boiler today watching just TH-cam videos..lol..this was so helpful..
Glad you enjoyed it
Saved by Allen once again! I can't thank you enough!
Thank you for taking the time to watch my video.
Amazing! I’m a first time home owner so this has saved me calling out an engineer as I had no clue! I’m so thankful to not hear that awful rattling sound anymore!
Thanks very much for your comment, please consider subscribing to support the channel 🙂
My boiler lost pressure and I put 4 bar in so I had to drain I turned off boiler and drained from rad. Back to 1 and half bar. Thanks for the tutorial
Thank You
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Thank you so much Allen. I could not have done this without your very clear instructions. I sincerely appreciate this.
Glad it helped
My boiler pressure is too high and is leaking do I need a gas engineer
yes
It's the air in my radiators that need bleeding every so often that puts the pressure back down.
Thanks for the advice to not turn the radiator key too much, you have probably saved me an absolute disaster there mate. I had no idea that the plug could shoot out of the radiator, (Sounds like a nightmare that I wouldn't be able to deal with on the spot)
It was also good to know that the pressure gauge should be sitting on 1 when the boiler is off and the water cold. Thanks man :)
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Hi i lost water preasure due to a leak on rad i represurerised boiler but now boiler keeps cutting out i bled radiators but just the same do you think i have airlock still thanx
Could be an airlock yes. Thanks.
Thank you good for helping us all
I filled mine to 1.5 when off... rose to 2 when on... need to bleed radiator I guess.
Same
Thank you
I got 3.5 bar's in my boiler i try to blead out from an radiator haw long usuly take's theat way to drop 2 bar's matte
Thank you Allen ... you've saved me lots of time and expense. I'm very grateful for your easily understood advice.
jesus christ i had 6.3 bar
thank god
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Thank you from 68 year old woman .... just saved this pensioner a lot of money.
Happy to help. Happy New Year.
Can it be any radiator or the radiator above the boiler.
Cheers Alan, Amazing detailed guide for Numb-Nuts like Me, the woman that knows BEST, *(I Do NOT @ ALL)* Haha.. Of course I had twisted all the different valves under my boiler and I had to resort to the Fantastic Advice from You Alan in order to make it Better again... Thanks a million, I have subscribed to you for future reference and will promote your advice and channel to all whom this will help also.. Again Thanks Alan.. All the very best mate.. Cheers Bud x
Thank You
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Our boiler makes a loud sound thats sort of like a "WHOOOOMP" and it happens about 3-8 times in a row maybe every few hours. I checked the pressure and its at 1, so I don't think its that. Anyone know whats going on?
Call out a gas engineer to check. Thanks.
Thank you so much. I just drained the water from the raidator and the pressure gauge came down. Thanks for putting this video together it really helps.
Happy to help. Thanks for watching.
Hi Allen, I have a greenstar 30ierp. The boiler pressure goes up after few hours of use (2.5bar). The radiator is not being used and filling loop is closed. The pressure relief valve has been changed recently. Any idea's?
It could be a faulty expansion vessel, or it just needs a service. Could you call out a local gas engineer to check it out? Thanks.
Hi Alan, my pressure was on 0 so I followed your advice but it’s now over 2. The heating is working and the taps are fine when I’m wanting cold water, but when I turn them for hot water it turns into a tiny trickle and I’ve not got water at all. Any advice would be great! We have a gas shower, so totally stuck. Thank you!
Did you get it sorted? Thanks.
I have put too much water in my boiler, I now have water dripping from the metal pipe outside will this stop when the level drops.
yes
Thank You
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Thanks Allen! Boiler broke down yesterday. Water leaking from it, BG guy came out and fixed it. As he left he said "You might need to bleed the radiators and adjust the pressure again...." I shat myself! Thanks to your videos, a I've bled radiators, and adjusted the pressure. Its sitting steadily around 1.5ish bar. Thanks again! Great videos!
Thank you
Brilliant video mate! Now can I have your whats app number for any future concerns with my system? HAHAHAHA
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Hi Allen, i have a slightly different problem with my Vaillant eco tec plus 28. Every now and again it loses its pressure, sometimes its okay for a while and other times it might happen twice in the same week. I have checked all rads and valves for leaks (thaey are fine) ive check nearly all the pipe runs and they seem fine and the blow off pipe outside is always dry. Any ideas what might be happening?
Thanks, Joe
When was the last time it was serviced?
@@AllenHart999 its over due, about 18 months since last service
@@joefowler9600 Might be better to have it serviced. Ask the engineer to check it. Thanks.
@@AllenHart999 will do thanks 👍
@@joefowler9600 Thanks.
If you fuck about with your boiler your home insurance is void... Don't bother call a gas safe engineer...
Thank you
Great video. I’m that person who needs these kind of videos and there’s still about five minutes left and I’ve figured out my problem. Cheers. It means a lot!
Thanks very much for your comment, please consider subscribing to support the channel 🙂
You are great thank you so much boss
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Thanks! Finally I have found the answer! All the problems that I have found bothering most of the people, were about the pressure going DOWN! So thanks again!
Happy to help, Thank you very much for watching.
My combi C30 has a 25 % efficiency on the display.please can you advise me how to solve this
No idea what you mean sorry.
Brilliant, Allen, explained clearly. Thank you!
Hi Allen just woke up to see the pressure gage on my boiler vibrating the preasurs bouncing from 1-3 rapidly. I've drained my rads, the noise stops when I open a tap but then continues to vibrate
what a great video. thanks for sharing this mate. Really helpful, quick and to the point. legend
Thank you
How do you no which radiator to drain
Doesn’t really matter. Thank you
Hi Allen, thank you for the informative videos as always. I’m faced with a different kind of boiler pressure issues on a Worcester 30cdi. The pressure slowly keeps going up to 3 bar and above. It takes around 8 to 12 hours for the pressure to exceed 3 bar from 1 bar. Everything been checked expansion vessels is fully charged and in good working condition. Filling key has been removed from the loop to make sure it’s not passing through the filling loop, but the pressure still keeps going up slowly. Any idea what it could be ?? A little help to guide me in the right direction would be very much appreciated. Thanks..
Any reply to this? im getting the same problem....
@@shakeeloniel8891
Which boiler do you have ?
In my case I had a very very tiny leakage on the expansion vessel.
@@afzalrahman3632 worcester bosch rd532.
@@afzalrahman3632 Hi Afzal i have a wocester bosch RD532, im getting exactly the same problem as you had. I need to check vessel were was yours leaking from?
What happens if the needle go past the red bar, I mean if the pressure goes about 3?
Take the pressure out.
Thanks mate. My missus had upped the pressure on the boiler and must have left the valve open, watching your video made me realise why our heating system was going nuts and quickly remidied the situation the following weekend after a week of 4 bar pressure. Life saver.
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Hi, i have an old boiler, ideal classic FF250.... pressure gage was at one, as i didn't realize the valve i was turning was releasing water - it is not at zero.... there seems to be no other value connected to the boiler.... any ideas?
Did you sort it? what was the issue
Thank you Allen. We have just had a new system installed and as an engineer I need to understand how it works. We have banging pipes and the installer set the pressure to 1.5 bar. We are waiting on him coming to reduce the pressure but thanks to you I now know what he will be doing as well as an optimum pressure.
Thanks very much for your comment, please consider subscribing to support the channel 🙂
1.5 Bar is fine...
How does too much water get into your system in the first place causing the high pressure?
Thank You
Allan, got me out of a hole there, thank you!
My dial is showing settings 40 & 90. How do I get the 90 down. On a wiessmann boiler
not sure what you mean? Thanks.
Great video again Allen loads of good ideas
Thank you for taking the time to watch my video.
Hi i have a vaillant combi boiler, and its flashing f28 error code. The pressure is 3 how can i get my boiler back up and running again?
Sorry for the late reply, Did you manage to sort it. Thanks.
1 when cold ,good to know.
I'd like to see a drain down anti sludge and refill ,including putting the anti corrosion chemicals or what ever they are.into the system.
This might help. Thanks. th-cam.com/video/2KVZhw2oWUc/w-d-xo.html
If it’s below the red line on a factory fit pressure gauge then its ok?
I would advise about 1 bar. Thanks. When cold.
Allen you’re a god amongst men, Thankyou for this video you just saved our Christmas ❤️
Thanks very much for your comment, please consider subscribing to support the channel 🙂
I can get hot water but the heating won't come on, is there anything I can do to fix myself or do I need an engineer?
Brilliant took all the panic away and sorted my boiler in 5 minutes ! Thanks.
Thanks very much for your comment, please consider subscribing to support the channel 🙂
I have to pressure mine every week, the guy who services the boiler said it's normal to, he does his regular also. He's obviously a bull shitter.
Thank you
Hi Allen, great video. Is it best to reduce the pressure when the central heating is off? or doesn’t it matter? Many thanks
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Continual loss of pressure can also be caused by a leak anywhere in the system. I found out after spending hundreds of pounds that a rodent was gnawing at the plastic manifold underneath the caravan (exterior to caravan on new Carnaby's) as it was attracted to the odour of the antifreeze ! The Plumber caged up the manifold with wire mesh and (touchwood) solved the problem. I was forbidden to put any poison underneath for the little rascal due site regulations.
😱Glad you sorted it, Bet that cost you a fortune?
Fab, exactly what I needed to know to release some of the pressure in the boiler: when the heating was on, the gauge was ticking up over 3 bar. Refilled it too much when the pressure went below 0.5 bar. Took 1 jug of water drained from a radiator to do. Simple and well explained :) Pressure released and boiler back to 1bar!!
Thank you
Hi my boiler PRESSURE is just under 1 about 0-8 but when my heating is put on about 25 my pressure goes to 3 bar the red line ....????
New boiler was fitted 2019 serviced 2 month ago....
Help
josh. brannan what boiler is it?
Thanks for quick comeback it's a viessmann
Allen, thank you so much; you’ve really helped me not go out with a bang on the last day of 2020!
Happy new year.
Very detailed video with prcatical example its helpfull to understand about low or high pressurein boilar and how to contol it.
I must say you did excellent job by simplifed it. Noticed you got large radiator key to take air out from radiator where can you get it?
Hi Alen. Thank you for processing and sharing this video.
Had unintentionally overpressured my boiler's heating water circuit via the manual magnetic valve (Ariston Genus Premium).
Your video helped me with depresuring the system by purging it under the filter via the manual tap, so we have heating and warm water right now.
Keep on going sharing your valuable knowledge.
th-cam.com/video/UR9wSU-I2O8/w-d-xo.html
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Hi Allen, tried to reduce the pressure of my water pressure but still above 2. My boiler is now showin F1 (low water pressure code) and wont work. There seems to be only a little bit of water coming out of the radiators. I don't know what to do!
What boiler is it? Thanks
Should you expect to drain a lot of water from your radiator to drop one bar???
yes.
Iv bled from radiators and got the pressure down to 1 but when heating is on it’s going back up to 3 and sometimes 4
Might need a boiler service and the expansion vessel recharging. Or it could need an expansion vessel. When was the last time you had the boiler serviced? Thanks.
Thanks very much for your comment, please consider subscribing to support the channel 🙂
@@AllenHart999 done
And I don’t think it was that long ago tbh
@@davidhiggins6051 Thanks
Today my boiler pressure started to continuously rise, heating is off but hot water is still being used. After about 5 hours I have to bleed the rads because the pressure is up in the red...Then I have to bleed them again 5 hours later. Any thoughts? All the pressure top-up screws seem set correctly.
Filling loop left open maybe? Let us know. Thanks.
@@AllenHart999 Hi, the heat exchange had pin hole sized damage. Had to be replaced.
Hi I've got a Worcester combi boiler green Star. The system was showing 3.5 bar. I've drained the whole system and it keeps refilling itself back to 3.5 bar. Please help
Filling loop left open or maybe split heat exchanger?
I checked the filling loop even tapped it shut.
Hi Allan just a quick one but I’m refilling my combi system after a flush and was wondering how long it takes to fill all the radiators and system back up
Depends how big your system is. Thanks.
I have 8/9 radiators and have just done a full drain but not sure how long it will take to refill the whole system it’s a biggish house.
I hope I don't have set you with my comments dot but every time I've bled a radiator it seems to make the water extra hotter on a standard boiler
Hi my boiler pressure in about 0.7 bar cold and about 2 / 2.5 when on...I have bled the air out the radiators. If I put it up to 1 when cold then it goes up to 3 when its on. Thats why I bring it down to about 0.7. Is this okay?
th-cam.com/video/UR9wSU-I2O8/w-d-xo.html
@@AllenHart999 thanks, I think though that this is the same video
I watched and commented on.
My radiators won't heat despite the boiler working so I had the not so brilliant idea to mess with things and valves etc underneath the boiler. I ended up increasing the water pressure quite a lot. I was totally panicked and found your video. So helpful and so clear. Thank you for showing the radiator method too as I couldn't locate the part underneath the boiler you showed first and I had had enough of a scare I didn't want to go messing with this boiler anymore!!
Great Video. Really helpful. Thanks
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Omg! Thank you! I am so stupid seriuosly thanks
Thanks very much for your comment, please consider subscribing to support the channel 🙂
My boiler is at high pressure - Is it dangerous to leave it like that tonight until a plumber friend calls me tomorrow..?
The video should answer your questions. Thanks.
@@AllenHart999 >. Thank you so much. It DID actually help me. Thanks again & merry christmas. 👍
Our Worcester 28i combi boiler pressure sits at 1bar on the gauge from cold / off... when the heating is On.. its goes up to 2.5 to almost 3 bar.. is this problem normally the vessel need pumping up as you mentioned ? Is so. what is normally the cost to do this. Hope you can help
When was the last time the boiler was serviced? Thanks
@@AllenHart999 Over a year ago, back before the pandemic started. I was just reading up on regards to pumping up the EV, is it straight forward ? it stated, once the system is drained, the EV can by pumped up by a car pump to 0.8 to 1.0 psi.? is this the possible cause
Hi Allen got a problem with the boiler making a high pitched noice and bar 2.5 nearly 3 bar I'm clueless 🙄 any idea 💡 what I can do.
th-cam.com/video/UR9wSU-I2O8/w-d-xo.html
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Hello . I hated your post. I have this problem every morning and evening I have to get the water out of the radiator the pressure is 3.5 bar in the morning and evening. I called the agency and they said it was not a serious problem. can I still use the boiler?
Sorry to hear you hated my video. It’s normally a sign that the people maintaining it are not doing a good job. Sounds like the expansion vessel needs pumping up. It’s hard to say without looking at it though. Thanks.
@@AllenHart999 I followed the same steps as in the video. But every morning and evening the pressure increases. you have to lower the pressure by removing the water from the radiator until it drops to 1. if it reaches 4 Bar what are the consequences? Thank you .
Great videos but iv a weird issue with my boiler. Recently had an extra radiator added to system for loft conversion, drained and refilled system numerous times throughout the process as had a few leaks with new radiator etc. The boiler works fine but every so often the pressure seams to just drop and boiler cuts out with the usual error code and once I open the fill loop, the pressure jumps straight back to normal which for us is around 1 bar', over time this causes the pressure to keep going up and more recently I have had to drain water as it was hitting 3 bar when the heating has being being on due to this weird pressure loss needing the filling loop turned on for a few seconds for it to bounce straight back to normal which has caused it to fill up to much. It almost like it doesn't need any more pressure, but for some reason the needle drops below enough for it to cut out now and again. Hope this makes sense. Thanks in advance.
Thank you
i have exact same boiler, but it doesn't have this loop. both tubes go inside the boiler and are not connected :(
Thank You
@@AllenHart999 what?
Hi do I turn off the boiler when doing this ? Thanks
yes
my ideal classic c28 has 1.2 bar pressure but heating is not working. probably answers my own question, but a radiator was removed to repaint the kitchen and a new one will be fitted this week. this should not affect the hot water though surely? boiler fires up, hot water initially comes out, then goes cool. any reason why?
My boiler light is on, but it's not working, also the pressure is too high
What an awesome person you are giving this detailed problem solving technique free of charge. A lot of respect.
Your videos are absolutely brilliant, you explain things so well it’s easy to understand, you’ve helped hundreds of people Thank you & keep up the great work 👌🏼
Thank you very much sir very informative video
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Alan could you not just turn the prv to reduce the pressure? obviously when the system is cold
no
Thanks very much for your comment, please consider subscribing to support the channel 🙂
We had a new boiler fitted Dec 2019 and this year it keeps gaining pressure. I thought that because the bathroom radiator was half hot half cold the air in it probably wasn’t helping so I bled the towel radiator (there was a lot of air in it) and the boiler dumped all the water out so I repressurised it to 1 bar and a week later it’s back up to between 2-3 bar when it’s on. Looks like I’ll be calling an engineer soon. Yay! Thanks for the informative video though! :)
Thank You
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Hi Albert my baxi is leaking and the pressure is right up,how do I release the pressure
th-cam.com/video/UR9wSU-I2O8/w-d-xo.html
Thanks very much for your comment, please consider subscribing to support the channel 🙂
I have put too much water in my boiler when I was topping it up, I have now got a trickle of water coming out of the copper pipe outside will this stop when my level drops on my boiler.
Thanks mate, you are very helpful
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Hi Allen desperate for HELP!!!! My boiler is banging very loudly!!! And water is coming out of the overflow quite rapidly! Have followed all the steps to drain the radiator and have been at it hours!! The only thing that stops the banging is keeping the kitchen tap running! Please help!!!
What about the drain pipe straight from the boiler .
What do you mean?
@@AllenHart999 when a heating engineer visits they attach a really small rubber hose to the boiler and drain it that way.