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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

    Default

    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 Sr Member
    Join Date
    Jan 2018
    Posts
    57

    Default

    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
    2,307

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    What is your Load Scaling set to?

  5. #685
    Automated Home Sr Member
    Join Date
    Jan 2018
    Posts
    57

    Default

    Turning off load scaling immediately resolved the problem.

  6. #686
    Automated Home Sr Member
    Join Date
    Jan 2018
    Posts
    57

    Default

    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

    Default

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

  8. #688
    Automated Home Sr Member
    Join Date
    Jan 2018
    Posts
    57

    Default

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

  9. #689
    Automated Home Legend
    Join Date
    Jul 2014
    Posts
    2,307

    Default

    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
    2,361

    Default

    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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