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Honeywell programmer keeps resetting itself.

Discussion in 'Plumbing and Central Heating' started by Neil99, 6 Apr 2021.

  1. Neil99

    Neil99

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    Hope someone can help me. I have a Honeywell hot water/central heating programmer that was installed when the house was built (1996). Over the last few months it's started to reset itself - the clock will go back to zero, therefore I have to reset the clock and timer all over again. It's as if there's a random power cut. It happened very occasionally, but now it's happened twice this week. I presume I will have to install a new programmer given it's age? If so, can I install any new make/model or does it have to be something very similar? I really haven't any idea. Thank you.
     
    Last edited: 9 Apr 2021
  2. Chris_W

    Chris_W

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    A good starting point would be the model of programmer, Honeywell have made one or 2 :rolleyes:
     
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  4. ianmcd

    ianmcd

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    post a pic of the one you have, as @Chris_W says it is like saying you have ford car
     
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  5. Neil99

    Neil99

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    Oops, my bad! It's a Honeywell ST699 programmer. Thank you!
     
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