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Thread: Evohome firmware 02.00.19.31 Beta Trial - Exclusive for Automated Home Members

  1. #681
    Automated Home Jr Member
    Join Date
    Feb 2016
    Posts
    24

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    Thank you!

  2. #682
    Automated Home Jr Member
    Join Date
    Jun 2015
    Posts
    26

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    Anybody else having problems with the cold weather boost function?

    This morning our lounge has a temperature of 16.5, with the outside temperature being 6 degrees. Setpoint normally 19, system has boosted to 20. But the heating is not on, radiators are stone cold.

    System screen shows BDR at 14%, and the lounge at 30%. Anyone have an idea off what is going on?

    I've now turned the boost off to see if that helps.

    This isn't a new problem, I've noticed it a few times now, but this is the worst I've seen it.

  3. #683
    Automated Home Jr Member
    Join Date
    Jan 2018
    Posts
    48

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    Quote Originally Posted by sminkypinky155 View Post
    Anybody else having problems with the cold weather boost function?

    This morning our lounge has a temperature of 16.5, with the outside temperature being 6 degrees. Setpoint normally 19, system has boosted to 20. But the heating is not on, radiators are stone cold.

    System screen shows BDR at 14%, and the lounge at 30%. Anyone have an idea off what is going on?

    I've now turned the boost off to see if that helps.

    This isn't a new problem, I've noticed it a few times now, but this is the worst I've seen it.

    I saw a similar problem last week.
    Lounge was 1 degree below setpoint (boosted by 1 by cold wwather), no other zones wanted heat. Lounge wanted 100% BDR was 1% nothing happening.
    I switched off load scaling (from full)

    The lounge get's quite a bit of solar heating on sunny mornings and on those days continues to get heat from the adjacent conservatory.
    I suspect load scaling has decided that it doesn't need much input from the boiler to warm it up - tough on a cold winter evening.

  4. #684
    Automated Home Legend
    Join Date
    Jul 2014
    Posts
    1,553

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    What is your Load Scaling set to?

  5. #685
    Automated Home Jr Member
    Join Date
    Jan 2018
    Posts
    48

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    Turning off load scaling immediately resolved the problem.

  6. #686
    Automated Home Jr Member
    Join Date
    Jan 2018
    Posts
    48

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    Quote Originally Posted by bruce_miranda View Post
    What is your Load Scaling set to?
    Pay attention, Bruce.
    "I switched off load scaling (from full)"

  7. #687
    Automated Home Jr Member
    Join Date
    Jun 2015
    Posts
    26

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    Was on 'normal' load scaling, adjusted to partial and immediately both went to 100%. Thanks for your help everyone.

  8. #688
    Automated Home Jr Member
    Join Date
    Jan 2018
    Posts
    48

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    @atm any thoughts on this load scaling behaviour? It's clearly not desirable.

  9. #689
    Automated Home Legend
    Join Date
    Jul 2014
    Posts
    1,553

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    Load Scaling is a nice idea but I think the algorithm used in Normal is too suppressive. People seem happier with Partial.

  10. #690
    Automated Home Legend
    Join Date
    Sep 2014
    Location
    Scotland
    Posts
    2,305

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    Yep, I had to give up on "Normal" / "Full" mode as it is too aggressive on my system causing rooms to struggle to meet their set points. Partial works well for me.

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