Vaillant EcoTec Pro 30 - Loud clicking noises every few mins after heating starts

[TomK321]

Our Vaillant EcoTec Pro 30 makes a loud clicking noise every few mins after the heating comes on. Eventually, after about 10-15mins it stops, but the weird thing is it also happens the same (clicks every 2-3 mins for 15 mins) after the heating is switched off.

Here is an edited clip of the clip happening 3 times. The first click is about 2 mins after the heating is switched on, the second and third clicks are after ~5 and ~8 mins when the boiler is running at full power.

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Other than the clicking, everything else with the boiler works fine.

Any ideas?

 

[Marshall]

Hi there, did you ever get the answer to this? I have the exact same problem!

 

[king of pipes]

Sometimes the bolts on the back of the burner need tightening , also needs copper slip on the studs that hold the main burner into the heat exchanger it's a routine job and should be carried out on a service when the G10 seal is replaced it comes in the replacement seal pack contact your service engineer . Regards Kop