Vaillant Turbomax noise

[AMGasServices]

Are you referring to the band saw noise? Is the noise coming from the combustion chamber?

If so could be pump or fan. Try oiling the fan see if it makes a difference get it and replace it.

 

[Scott_D]

Are you referring to the band saw noise? Is the noise coming from the combustion chamber?

If so could be pump or fan. Try oiling the fan see if it makes a difference get it and replace it.

It’s fine in heating and HW if the temp dial is below half.
Only happens if the HW temp is turned up

 

[Steve weightman]

Have you gas analysed could be the gas valve that needs a tweek

 

[Scott_D]

Have you gas analysed could be the gas valve that needs a tweek

Readings are pretty god for an old girl

 

[Scott_D]

I’m struggling to find the correct MIs for it
Couldnt workout if it had a bypass

 

[AMGasServices]

It’s fine in heating and HW if the temp dial is below half.
Only happens if the HW temp is turned up

Turn the temperature up to max use the tip of your screwdriver (put it on each component in the area you’re hearing the noise) and put the handle of the screwdriver at your ear. Use it as a stethoscope.

 

[Ollieg]

burner pressure is too high. Or a restriction on the plate causing poor circulation.

 

[Ollieg]

burner pressure is too high. Or a restriction on the plate causing poor circulation.

 

[Ollieg]

the bypass comes off under the diverter and runs to the back of the boiler and then round.

 

[MARTIN LISTER]

I had exactly the same problem with a TURBOMAX PLUS 824 E. It made the noise only when the burn modulated up to full. Could not trace it to any particular component because the whole boiler vibrated. Fitted a new primary heat exchanger and solved it. Fairly easy to fit. No visible fault on old heat exchanger.