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  1. M

    Heat Line VISO 24 DHW Issue

    I noted when I drained down the system for decorating this summer that the water was a thick light brown colour, similar to rust. On the boiler it says it was 'flushed' about 2 years ago. It may have had an additive in the water, 'fernox' or similar to give this colour. I know there was a...
  2. M

    Heat Line VISO 24 DHW Issue

    I downloaded the PDF version quite easily however on examination it is obvious there are bits missing. The Map of numbered parts on the boiler has no key for the first half dozen items and many of the later charts are only printed on the left hand side, the right being blank. I have been unable...
  3. M

    Heat Line VISO 24 DHW Issue

    Using a watch and marked level on a bucket I got the flow rate to approx 9l/m Set to DHW only, max setting, the boiler burner looks ok and after about 60 seconds you get warm water at about 30 degrees it then trails off in about 30 seconds to 20ish then back again in another 30secs to about 30...
  4. M

    Heat Line VISO 24 DHW Issue

    The mains water pressure is quite high so on full bore it will fill a bucket very quickly but with barely warm water. Have to take care to point down plug hole or risk of soaking everything in area. At a rate that is useable to say wash your hands I don't hear the boiler start up.
  5. M

    Heat Line VISO 24 DHW Issue

    I have inherited the boiler with the property. Heating comes on OK with timer or manually and gives good heat. The Domestic Hot water is however a problem as when the tap is on full bore it only then starts to heat and is very cool. My first instinct is the Flow Sensor as I have had a previous...
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