On Sunday, January 26, 2020 at 2:44:04 PM UTC, Sam wrote:
I have anproblem with my Vokera linea 28 boiler , work no problem with central
heating , but when running hot water , mainly the shower , it gets to temp
fine then after a couple of minutes the water starts to run cold then heats
back up again . At this moment in time i have replaced the safety thermostat ,
both thermistors , fitted a service kit to the divertor valve and checked the
heat exchanger isnt blocked , the problem still exists although does seem to
run for longer when the temp setting is turned down , is there anything else
that could be causing this issue . Thanks Sam


Our Vokera has done that since day one. I put it down to the crazy pipe runs in our old house but it does seem to have got worse in the last year or so. Damn thing's only about 20 years old; does nothing last these days?!?

Our mains water pressure is quite high, so I don't believe it's cutting out because of a limited flow of water.

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Halmyre