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Thread: Don't throw out faulty Evohome HR92s

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  1. #1
    Automated Home Jr Member
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    Default Don't throw out faulty Evohome HR92s

    I was amazed to see that faulty Evohome HR92 TRVs do successfully sell on eBay, listed as "for parts or not working". I just sold one which is dead after a battery leak.

    So, if you prefer not to add to landfill, there is a way to avoid it if you are willing to write the eBay listing and then post it. Mine sold for £10, which isn't much, but it perhaps makes it worth the effort.

    (There's a market for most broken electronics. I got £100 for a TV that was zapped by a lightning strike!)

  2. #2
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    Just curious, which batteries do you use? I've got duracells in mine but even those have leaked on occasion in different devices.

    I wonder if there is something that can be done in an attempt to prevent a leak, maybe moving them around into different heads so they are not always in the same place, assuming it's due to specific environmental conditions (maybe if they are too warm or too cold?).

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    Quote Originally Posted by therealfronty View Post
    Just curious, which batteries do you use? I've got duracells in mine but even those have leaked on occasion in different devices.

    I wonder if there is something that can be done in an attempt to prevent a leak, maybe moving them around into different heads so they are not always in the same place, assuming it's due to specific environmental conditions (maybe if they are too warm or too cold?).
    I've has two types leak. Duracell Pro and Amazon (supposedly leakproof). I'm switching to using rechargeable, as they very rarely leak.

  4. #4
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    I've been using GP Ultra or Varta Alkaline's in mine for over 5 years - never had any leak or even show any signs of leaking.

  5. #5
    Automated Home Jr Member DerekWilliamsUK's Avatar
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    +1 for GP Ultra. Never seen any leaks.

  6. #6
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    Quote Originally Posted by DBMandrake View Post
    I've been using GP Ultra or Varta Alkaline's in mine for over 5 years - never had any leak or even show any signs of leaking.
    Which is what I would have said, six months ago. Alkalines don't leak frequently, but it only takes once to write off a £60 TRV.

  7. #7
    Automated Home Sr Member philchillbill's Avatar
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    Rechargeable (even low self-discharge NiMH) will need charging every 3 months. I had 2450mAH Eneloops in use and they drove me mad. Also, the battery clip is crap in the HR92 so you will eventually write off a HR92 due to regular changes, methinks. I switched to Energizer Lithium instead. Just sayin'...

  8. #8
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    I started changing my batteries for Eneloops about 18 months ago as the alkalines that I had in there died. I did this for 2 reasons. Firstly, I thought it was wasteful to be throwing away all those batteries every 18 months. Secondly, I had a terrible habit of trying to eek as much capacity as possible out of them before I changed them. On more than a few occasions this resulted in the batteries dying whilst the HR92 was trying to operate, inevitably leading to a hot room. With the rechargeables, I now just change them as soon as I get a battery warning.

    I have to say that I havenít noticed a huge increase in frequency of having to change the batteries. Iíve never actually recorded when Iíve changed one to see how long they last, but Iím certainly getting longer than 3-6 months and I would estimate closer to a year.

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