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    Hi Flow 400

    Maybe you could come and replace mine soon then with a 440
  2. P

    Hi Flow 400

    To be fair that was for a viesmann boiler of the same order , with an additional immersion type tank in the loft the hot water Still bl**dy expensive As a rule what are they like ? To be fair i have has 11 years out of my WBosch and it still works OK
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    Hi Flow 400

    Thanks for that the diverter was chaged a couple of years ago as it died over the summer break, it didnt make any difference to the noise. Both the hot water and heating works well and heats quickly would this work OK if the HE were blocking ? I must admit that there was a small leak on the...
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    Hi Flow 400

    Agree, it does seem like an 'air noise' or caviataion, it only happens when the hot water curcuit kicks in from cold. I have changed endless auto bleed valves, manual bled the litte valve on the top of the pressure release valve also for ages, but nothing comes out ( air )
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    Changing o2 oxygen sensor

    If your 02 sensor has failed you should have a dash waring light come on I would have it checked out properly as 02 sensors are not cheap and it may not fix the issue anyway
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    White paint turns yellow

    I had the same issues with white oil based paint It will go yellow very quickly if it does not have natural daylight, the less light the quicker it wil happen. Either use a water based gloss, they dont go yellow, but give a crap finish as they dry too quickly or choose another colur other...
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    Hi Flow 400

    My hi flow 400 was fitted when my house was new, and is now 11 years old, in general it has been OK with no major issues But i have had the same issue for a good few years now and that is noise when the hot water side kicks in from cold, ie morning start up, it has a sound best decribed as a...
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