advice needed for my Vaillant boiler

[laura88]

My Vaillant boiler was working perfectly fine. Yesterday I noticed that all my radiators were not working any more. The hot water is still working. Thank you for your help.

[Kersley ABS]

 You need to bleed the radiators.

[ed_pete]

On 19/02/2026 at 13:38, laura88 said:

My Vaillant boiler was working perfectly fine. Yesterday I noticed that all my radiators were not working any more. The hot water is still working. Thank you for your help.

Is it a combi boiler or do you have a separate hot water tank ?

[ANDY B]

Hi what’s the boiler pressure 

[Sue]

Is there a fault code showing on your boiler?

On 20/02/2026 at 17:49, Kersley ABS said:

 You need to bleed the radiators.

Surely they wouldn't all stop working at once due to all of them needing bleeding?

Btw I just this evening had a problem with my boiler (no heating or hot water), and ChatGPT talked me through a fix.

But if you can't sort it, I highly recommend Tommy Rooney 

https://www.trooneyheating.co.uk/

ETA: Oh. Just noticed the OP was two weeks ago, so probably it is sorted by now.

 

Edited 6 hours ago by Sue

[Happyme5]

I had a valiant and it was a storage boiler.  There is a switch system by the boiler the engineer referred to it as a 2 port.  It needed replacing.  It switches between hot water, heating or both.  Mine was jammed.  Good luck

Edited 2 hours ago by Happyme5