My 4 year-old regularly serviced Vaillant 835 Combi is making a loud vibration noise whenever a tap/washing machine/dishwasher is opened/on, and lasts for 10 - 20 seconds after the tap is closed. Have checked all taps/radiators for leaks, trapped air etc. Noise does not appear when heating is on. Location of noise does not appear to be from either the Divertor or the Heat Exchanger, and water heats OK. My Corgi registered (expert) on Vaillants could not identify the source of the noise, but suggested could be as a result of increased mains water pressure. Only way to find out is by a process of elimination. Can anyone else suggest a possible cause?
Vaillant Vibration Noise
- Thread starter ChillyDog
- Start date
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