Boiler flu sounds like a gurgling drain!

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Advanced the hot water and upstairs heating tonight for a shower to be greeted with a gurgling noise from the flu which I could hear next to the boiler and outside. The noise sounds like a soil pipe burbling as water has run away.

Also I think I can hear a bubbling noise in the boiler. Bit difficult to differentiate this from the flu noise though. Wondered about a cracked heat exchanger but there is no water ****ing out underneath.

I've an Ideal Heat 30. I've never heard anything like this before from it.

On things to report are little use of the boiler last couple of months due to warm weather. Mostly just been using it for the hot water.



Any ideas? Thanks.
 
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Can you access the flue from outside?
Check if anything is stuck in it.
Check that condensate drain isn't blocked. At the bottom end


Edited by mod
 
Last edited by a moderator:
Some progress. Soil pipe was blocked condensate goes into this just rodded with a rubber disc down the soil pipe and blew a load of sludge up the wall through a down pipe p trap I think there called. Old house so rain n soil together on one side of the house. I've flowed the garden hose and flushed toilets to clear what's left and confirmed at what my local plumbers call the plumbers drain it's clear. This drain is a metal flap right at the edge of my garden I believe where it drops down into the road sewer. This happened about 5 years ago so maybe the run isn't great or a tree root disturbance.

Anyway I'm happy drain is running clear.

Flu pipe is clear looking from outside. But still gurgling like bilio.

Now got L2 fault code = Ignition Lockout.
 
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Will this be water sitting in the void in the heat exchanger where the burner flame is fired at?



Or if I left it over night would it U tube naturally through the condensate trap and clear?

Thanks

Edited by Mod - I'm sorry but that pipework forms part of the flue system of the boiler and we won't give advice on here that could compromise safety
 
Last edited by a moderator:
Why on earth is this householder being encouraged here to open up his room sealed boiler?

Totally against forum rules!


Only a Gas Safe registered engineer should be opening a room sealed boiler.
 
Likely to have damaged many parts you have 2 options either gas safe engineer to fix or pay ideal to fix boiler, as non boiler fault
Good luck
 
Just to clarify no one on here encouraged me to work on my boiler. I was able to take off the condensate pipe and pour water down it to confirm it wasn't bloocked. Switched the boiler off and on again and all is well. Can only think the condensate trap couldn't drain and it's backed up and switched itself off. Can't have been much water in it as nothing electrically tripped and it's working away as normal. Thanks for advice folks.

Mods note - That's fine you can work on the condensate after the boiler trap.

Glad you got it sorted without extra expense
 
Last edited by a moderator:

I had read about that before you posted the link.

It made me smile that the gas engineer was also affected by the high CO output from the boiler!



A self-employed gas engineer was fined £933 after two residents were hospitalised from carbon monoxide poisoning at a house in Pontardulais.

Swansea Magistrates Court heard how 67-year-old Philip Cannon carried out unsafe gas work on a boiler in the property on 23 January 2015. It was found the boiler emitted extremely high levels of Carbon Monoxide (CO). All three present in the property were later treated in hospital for Carbon Monoxide poisoning, including Mr Cannon.
 
Can you access the flue from outside?
Check if anything is stuck in it.
Check that condensate drain isn't blocked. At the bottom end


Edited by mod

FFS mod... are YOU Gas Safe?
You lot pick and choose when and where you want to step in! No consistency in moderation whatsoever! "Check" doesn't mean "do what you want, no holds barred"! Fecking Richard Cranium.
Agile, did you stir this up?
 

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