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  1. M

    Honeywell ST699B Battery

    From what I have heard, sometimes they are replaceable, sometimes they are not. What do the replaceable ones look like ? I don't want to try to get one off that won't come off !
  2. M

    Honeywell

    Sorry, stupid question.... I am just so frustrated.
  3. M

    Honeywell

    I can get to the two at the top, and the bottom right, but the bottom left is shielded by cable, trunking, and WOODWORK (sorry). Once depressed, do the tabs stay down, or do they all have to be depressed together ?
  4. M

    Honeywell

    A Honeywell ST499A/ST699B Time controller/Progammer. How do I get the front off/inside it ? I think it must have been installed during the construction of the airing cupboard and access is very resticted. It is driving me potty.
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