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Vaillant boiler and Drayton SCR

Discussion in 'Plumbing and Central Heating' started by DC45191, 23 Oct 2021.

  1. DC45191

    DC45191

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    Hello all

    First time post so go easy.

    Just had a new Vaillant EcoTec Pro 28 installed. All is fine but the Drayton SCR receiver doesn’t seem to ‘talk’ to the boiler.

    The green light clicks on when demand for heat is requested but the boiler doesn’t do anything (the heating works manually)

    I’ve attached the wiring photos, I’ve also removed the link wire on the SCR but again no improvement.

    Any ideas?

    Thank you
     

    Attached Files:

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  3. ianmcd

    ianmcd

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    is there a timer built into the boiler ? post a pic of the boiler control panel
     
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  4. DC45191

    DC45191

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    All sorted thanks! Removed the red link on the 24v return and all working as it should.
     
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