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  1. M

    Vaillant TW3 boiler keeps coming on and off by itself

    Thanks for the help. regards Mal
  2. M

    Vaillant TW3 boiler keeps coming on and off by itself

    I am not sure as the boiler is located 200 miles from where i am at the moment. If the switch is on would this be the cause and if so how often does the boiler fire up in this position. thanks Mal
  3. M

    Vaillant TW3 boiler keeps coming on and off by itself

    I have an old Vaillant boiler CW 25 T3, which keeps coming on and off of its own accord can any one help with this problem
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