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  1. I

    powermax 155

    gaz thanks for the reply. any ideas who to contact
  2. I

    powermax 155

    ollski. reason for altering pressure first was that the boiler was whistleing. it now as the trumpet noise
  3. I

    powermax 155

    had a whistleing noise from my boiler. corgi plumber adjusted gas/air ratio. Now have a "trumpet" noise which last for 20 mins, this starts as the burner cuts in. Anyone know what this is and how to solve.
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