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Thread: Evohome HR92 batteries

  1. #21
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    Quote Originally Posted by mylesm View Post
    Every 3 months seem very frequent I have not got a warning yet from when I changed over a year ago and some zones are on from 7am to 22:30 is it usual to have to replace every 3 months or is there something causing the Hr92 to use more power I wonder if you swapped that Hr92 with another and rebound it to the zone would the other one also only last 3 months
    Usually they last over a year. The longest so far is 20 months. I only started keeping a record of changes in December 2015. I installed the system in December 2014. I started the record as I thought one seemed to be regularly eating them. Since December 2015 new batteries have been installed in this one HR92:

    06 December 2015
    15 March 2016
    24 June 2016
    25 September 2016
    17 December 2016
    15 March 2017
    18 June 2017
    10 September 2017

    Hence I expect to be changing them mid December next!

    I have delayed a swap round whilst I monitored but intend to do so when the time comes to change again - mid December next. The HR92 rarely has to operate, the wireless signal is good and it does not matter whether the Control Panel is near or some distance from it. Whilst the HRP92 is rarely needed to open and close the valve they will be talking to base regularly. Just about the only time it is needed to open and close is when I put the new batteries in and it syncs. Will find out if it is a faulty HR92 some time around March next year after I change the batteries in December and swap the HR92s around.
    Last edited by G4RHL; 4th December 2017 at 06:20 PM.

  2. #22
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    Addendum: 4th December 2017

    As expected in my last post on the 14th November, today the message arrived that I need to change the batteries in the usual zone. To the above list therefore add 4th December 2017. I have now swapped HR92s over and in March next year should know if it is the location or the device that is causing the issue. I don't think it is phases of the month or the equinox!

  3. #23
    Automated Home Legend paulockenden's Avatar
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    Perhaps it's every Supermoon!

  4. #24
    Automated Home Ninja Dan_Robinson's Avatar
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    Or an ill tempered telepathic goldfish.
    Kind Regards - Dan Robinson (Jennings Heating Ltd)

  5. #25
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    Quote Originally Posted by Dan_Robinson View Post
    Or an ill tempered telepathic goldfish.
    Definitely not a goldfish. Have not got any. Got a hedgehog in the garden who keeps tripping my camera during the night.

    It was so long since I last set up an HR92 I had to get the book out to remind myself!

  6. #26
    Automated Home Legend paulockenden's Avatar
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    Quote Originally Posted by G4RHL View Post
    Got a hedgehog in the garden who keeps tripping my camera during the night.
    Shouldn't they be hibernating by now? Might need attention from a local wildlife rescue...

  7. #27

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    Quote Originally Posted by G4RHL View Post
    Addendum: 4th December 2017

    As expected in my last post on the 14th November, today the message arrived that I need to change the batteries in the usual zone. To the above list therefore add 4th December 2017. I have now swapped HR92s over and in March next year should know if it is the location or the device that is causing the issue. I don't think it is phases of the month or the equinox!
    Log a warranty call - Say I said so
    getconnected.honeywell.com | I work for Honeywell. Any posts I make are purely to help if I can. Any personal views expressed are my own

  8. #28
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    Red face

    Quote Originally Posted by paulockenden View Post
    Shouldn't they be hibernating by now? Might need attention from a local wildlife rescue...
    Havenít told him he should be asleep. Looks big fat and healthy to me. Perhaps I should set him up with a hut and Evohome system.

  9. #29
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    Thanks. It’s 3 years old! It just may be better to see what happens. Radio waves are not straight forward things to deal with. Line of sight makes you think it’s a great signal but it may not be great if there are other devices nearby also emitting signals. In my case it is not line of sight, yet it is not the furthest away from the Panel. By March next I will know whether it is the location or the device. Perhaps better to wait for the Spring Equinox. It is just a little too consistent, every 3 months, to make me think it is the device, but I cannot think what else it could be although my airing cupboard is 10 feet away and in that are the relays, one for heating one for hot water.

  10. #30
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    Quote Originally Posted by G4RHL View Post
    Usually they last over a year. The longest so far is 20 months. I only started keeping a record of changes in December 2015. I installed the system in December 2014. I started the record as I thought one seemed to be regularly eating them. Since December 2015 new batteries have been installed in this one HR92:

    06 December 2015
    15 March 2016
    24 June 2016
    25 September 2016
    17 December 2016
    15 March 2017
    18 June 2017
    10 September 2017

    Hence I expect to be changing them mid December next!

    I have delayed a swap round whilst I monitored but intend to do so when the time comes to change again - mid December next. The HR92 rarely has to operate, the wireless signal is good and it does not matter whether the Control Panel is near or some distance from it. Whilst the HRP92 is rarely needed to open and close the valve they will be talking to base regularly. Just about the only time it is needed to open and close is when I put the new batteries in and it syncs. Will find out if it is a faulty HR92 some time around March next year after I change the batteries in December and swap the HR92s around.
    My guess is faulty battery contacts.

    One of mine reported brand new batteries as only 2 bars instead of 3, and then after only a few months started reporting the batteries as flat. I took them out and measured them and they were not. I gave the contact points of the battery terminals a careful scrape and also increased their tension - now the HR92 was happy that the batteries were not flat after all...

    The batteries you removed, can you measure their exact voltage ? You can get a pretty good idea of the state of an Alkaline battery from the open circuit terminal voltage. I'd be interested to know what it was when the HR92 claimed they were flat.

    Another way to find if the batteries really were flat would be to swap them with the batteries in another HR92 and see if the report of low battery location moved with the batteries... I'm skeptical the batteries themselves really are being drained that much, it's more likely a bad connection (or faulty HR92) is misreporting them as flat.

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