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Run central heating without heating

Discussion in 'Plumbing and Central Heating' started by rockinter, 2 Jun 2020.

  1. rockinter

    rockinter

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    Hi,
    I was wondering if it is possible to run the central heating pump without turning the heating on.
    The reason being I have just put some cleaner in my sealed system for maintenance. I like it to run around the system but would rather not turn on the heating as it is already too hot outside.

    The boiler is vaillant 831 in sealed system.
     
  2. Mottie

    Mottie

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    Turn the gas off? Failing that, can you turn the boiler temperature down to as low as it will go and open some windows?
     
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  4. muggles

    muggles

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    Press the reset button then immediately press and hold +

    You'll get a flashing dot followed by P.0

    Press i

    The pump should now run for about 10 minutes
     
  5. durhamplumber

    durhamplumber

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    Run it for a few minutes.It is not going to heat your house that quick..Turning the gas off will lock the boiler out after a few ignition attempts.
     
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  7. ianmcd

    ianmcd

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    Most cleansers will work a lot better with the system hot, I would not flush cold
     
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