Baxi Combi 105e intermittent HW problem

Discussion in 'Plumbing and Central Heating' started by Aled, 23 Apr 2007.

This topic originated from the How to page called Problems associated with noises from the central heating system.

  1. Aled

    Aled

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    I have recently moved into a house that has a Baxi Combi boiler 105e. When we moved in the pressure on the system was at max and a plumber replaced the valve and this is now sorted. However, we now get intermittent hot water (goes hot for about a minute, then cold, then hot - very regular). The plumber said that there was a lot of limescale in the system (partly due to the high pressure it had been under). Does the system just need a clean or something more?

    Thanks
    :confused:
     
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  3. Agile

    Agile

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    The plate heat exchanger is blocked with sludge rather than lime.

    Not only does the HE need cleaning but the whole system will have to be cleaned to stop it gettin g blocked again. That would often be by power flushing.

    Tony
     
  4. Aled

    Aled

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    Thanks Tony
     
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