Strange smell suddenly coming from boiler

[BoilerSmells]

Our Vaillant boiler was installed roughly 6 years ago, and, until recently, it’s been problem-free.

Over the last few weeks/months, though, there’s been an occasional rattle/rumble/screeching(!) sound when we run the taps (usually remedied by turning them on fully for a few seconds), and tonight I noticed a strong chemical smell in our hallway - that looks to be coming from the boiler - which no one in the house has smelt before today.

What could be causing this? Help, please!

 

[Old Account]

Hi there,

If i was you i would not use the boiler No MORE and get a gas safe engineer out to let him access the problem. The rumbling and rattling sound is a sign of need an engineer.

 

[BoilerSmells]

Thanks for your advice, Matchless.plumb. Any idea what could be causing the sound, other than air in the pipes?

 

[Old Account]

Thanks for your advice, Matchless.plumb. Any idea what could be causing the sound, other than air in the pipes?

Without me being there it would be difficult but if you had a chance to upload a video we could give you a precise answer. I would assume it will be a dirty system but it could be also coming from other parts

 

[Chuck]

You need a Gas Safe engineer to fix it. The Vaillant website can help find someone suitable

Find An Installer - Vaillant

If it's emitting 'chemical' fumes, something is overheating seriously, possibly a motor bearing. I suggest you turn it off to avoid poisoning your family or risking a fire.

 

[king of pipes]

Sounds like something is burning out you will need a GSI to check it out as above for your own safety turn it off . Kop