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  • FIRST POST
    • Cameron1590
    • By Cameron1590 7th Jan 18, 5:59 PM
    • 106Posts
    • 18Thanks
    Cameron1590
    Combi Boiler DHW
    • #1
    • 7th Jan 18, 5:59 PM
    Combi Boiler DHW 7th Jan 18 at 5:59 PM
    Hello,

    We have a Biasi Riva 28kw combi. Central heating is working fine, gets burning hot super quick. The hot water is fine when the demand is from a tap but not when itís for shower/bath.

    The mixer shower has really started cycling between being hot and cold while in use, the mixer tap isnít faulty. The bath tap has to be run very slowly for the water to be very hot however the combi boiler is rattaling like mad. It sounds like a tin of nails is in it.

    As we are in a hard water area, I am assuming the DHW heat exchanger is scaled up. Is this likely to be the cause? It doesnít rattle when central heating is on.

    Thanks
Page 1
    • southcoastrgi
    • By southcoastrgi 9th Jan 18, 11:02 PM
    • 5,267 Posts
    • 3,060 Thanks
    southcoastrgi
    • #2
    • 9th Jan 18, 11:02 PM
    • #2
    • 9th Jan 18, 11:02 PM
    Yes it sounds like it
    I'm only here while I wait for Corrie to start.

    You get no BS from me & if I think you are wrong I WILL tell you.
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