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  1. P

    vaillant 831 - keeps firing

    I have a problem with the above combi boiler. Whenever a cold tap is turned on - then off, or after the loo has been flushed, the boiler briefly fires up. I think its got to do with pressure but i dont know how to cure it. There are no dead legs on the sytem. Only thing recently added has...
  2. P

    any alpha experts-leaking boiler

    Hi. This is my first post so hope someone will be able to help. Just got in to find that my Alpha 240e has a small leak. Its at the diverter valve. Just behind where the front piece (with the 2 thin tubes) meets the assembly behind. Happens when hot water has been run. There are 2 small...
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