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  1. G

    baxi 105e instant expansion tank

    Hi can anyone help I have just fitted an external expansion tank to a back 105e instant combi but the new tank has a pressure of 1.5 bar and my system should be around 0.9 bar it is an 8ltr tank should I reduce the pressure in the new tank to 0.9 bar at the moment it holds pressure when dhw is...
  2. G

    baxi 105e instant dhw problem

    Baxi105e instant dhw will take up to 5 mins for the led to light up and fire the boiler if I turn the preheat selector no change but if I repeatedly turn the selector on to off it will light the led and fire the boiler new PCB fitted 3 months ago CH working OK is this a duff board not...
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