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Fridge/Freezer power consumption analysis

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  • Chrysalis
    Chrysalis Posts: 4,724 Forumite
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    I also ordered temp sensors, just not installed them yet. :)

    My fridge has a fancy LED at the front but it only reports set temp not actual temp. :|
  • Qyburn
    Qyburn Posts: 3,619 Forumite
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    Just got the temperature monitor yesterday. My tablet can read it from the corridor outside the pantry, I don't need to get right up against the freezer.

    First test showed only -15.5 Deg.C in the top compartment. I've moved it two drawers down and now showing -19.3. If it's similar in the morning I'll move it down to near the bottom. Then work my way back over the following days to see if it's consistently different like that. 
  • Chrysalis
    Chrysalis Posts: 4,724 Forumite
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    edited 5 November 2023 at 12:33AM
    I put one in my freezer and one in my fridge.

    The fridge reports a range from 3.1C up to 4.1C

    The freezer was reporting -22C (its set to to -18C) and when I had a look today it stopped working.

    The freezer is definitely way colder than my older freezer was, opening a drawer can see mist type air appearing, but my old freezer might not have been working properly, will buy a different branded thermostat to see what that measures.
  • matelodave
    matelodave Posts: 9,083 Forumite
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    Have you tried changing the battery - most batteries don't like being stored or used at very low temperatures. The alternative is to get one with a remote sensor so you dont have to freeze the unit and its batteries
    Never under estimate the power of stupid people in large numbers
  • Chrysalis
    Chrysalis Posts: 4,724 Forumite
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    edited 5 November 2023 at 4:51PM
    Have you tried changing the battery - most batteries don't like being stored or used at very low temperatures. The alternative is to get one with a remote sensor so you dont have to freeze the unit and its batteries

    No need on the battery, after some hours I looked at it sitting in ambient temp and its on again, looks like it cant handle my freezer temps.  New device arriving tomorrow.  This was one rated for -50C lol.
    The one arriving tomorrow is the one mentioned in this thread that people are successfully using.
    If the new one has same problem I will get one with a remote sensor as you suggested, thanks.
  • Netexporter
    Netexporter Posts: 1,967 Forumite
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    I've got a digital thermometer with the sensor on the end of a wire. You can take the temperature of the fridge/freezer/whatever and look at the display at the same time. It only cost a couple of quid.
  • Qyburn
    Qyburn Posts: 3,619 Forumite
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    I'm not that happy running a wire through the door seal. 
  • Netexporter
    Netexporter Posts: 1,967 Forumite
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    It's thin enough I doubt the seal even notices it.
  • mmmmikey
    mmmmikey Posts: 2,333 Forumite
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    Hi, if anyone has the temperature sensors I linked to earlier, it's worth knowing that on one of mine the display goes blank because of the cold, but the Bluetooth still works and I can see both the live and historic temperatures on the smart phone app.
  • Chrysalis
    Chrysalis Posts: 4,724 Forumite
    Part of the Furniture 1,000 Posts Photogenic Name Dropper
    An update I have now seen the fridge temp as low as 2.5C, so it seems either the setting is a max target temperature and it could go 1C or so below that or the cheap thermostat is not that accurate, but at least I know its not massively above the temp which is the main purpose of getting these devices, the new one to use in the freezer is coming tomorrow.
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