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  1. A

    honywell sundial

    sorry , thats a honywell sundial ST6400C
  2. A

    honywell sundial

    oh hi its an st6400c 7 day , does this help you, thanks again Tony
  3. A

    honywell sundial

    can anyone tell me ,between which terminals , do i put in links ? :?: on the programer ? its on a y plan central heating system, thanks , Tony
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