British Gas energy monitor – battery issues/resync

British Gas Energy Monitor

British Gas Energy Monitor

The British Gas energy monitor (more info here) is a wonderful little gadget even if you can become obsessed with it (yup we’ve all been there monitoring energy usage like a hawk when we first had it – nope you can’t deny it!).  That time will come after about a year when you won’t have any meter reading coming through it at all – yup, the battery in the sensor itself needs replacing.

Aside from getting a battery (a CR2 3V battery, incidentally which can easily be found on Amazon or camera shops), the monitor has a problem where it loses synchronization with the sensor and keeps looking for it.  After reading through the instructions I had no joy on working out how to get the monitor and sensor talking again.  I finally gave in and spoke to the nice people at British Gas on how to reset the units.

  • Unplug the power supply from the display and hold the top ‘menu’ button down for 10 seconds.  The screen on your display go blank to show it’s been turned off.
  • While the monitor is turned off, disconnect the sensor from the electricity meter.  Remove the battery and reinsert after 10 seconds.
  • Using a paper clip or small screwdriver, press the reset button which can be found about halfway down the side of the sensor. You will need to press the reset button 4-6 times until the LED inside the sensor starts to double flash.
  • Reconnect the sensor back on your electricity meter.
  • Insert the power supply back into your display and while holding the bottom ‘adjust’ button down.  Press the top ‘menu’ button four times and the display will flash white and clear, before returning to display the pulsating blue antennae and ‘find’ on the screen.
  • After 30 seconds the unit will pair back to the sensor and display the meter reading again.

Should you get into any trouble (I somehow managed to get to a ‘join’ screen with no controls), hold down the bottom ‘adjust’ button for ten seconds to reset the unit completely and start again from above.

Hope this helps

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52 Responses to “British Gas energy monitor – battery issues/resync”

  1. yan downie July 2, 2013 at 6:28 pm #

    spot on.worked a treat. thank you very much

  2. Rhian Evans August 11, 2013 at 11:26 pm #

    You are my hero – worked a treat. Has been bugging hubby for almost a week!!! Thanks 😀

    • Matt August 12, 2013 at 6:59 pm #

      A pleasure, glad to hear you got it working 🙂

  3. phil September 14, 2013 at 8:38 pm #

    Hi Matt – I was initially excited to find your instructions for re-synching the British Gas energy monitor… BUT despite following your instructions, it’ still not working. You say to press the reset button in the sender with a paperclip 4-6 times til the LED double flashes. I’ve done this again and again but the LED still just flashes long on with a short off then long on.. The pattern of the flash won’t change. And the receiver won;t detect it. Any thoughts?? Have you have other feedback? cheers Phil

    • Matt September 19, 2013 at 7:23 pm #

      Tried it again on my old one and it works instantly, but a friend has one of the newer ones and it appears you have to hold the reset button in for a second or two between retries (just tapping it doesn’t seem to work). Hope that helps!

  4. Dee November 23, 2013 at 10:21 pm #

    You’re fantastic, this was driving me crazy!! Now it works perfect again…

  5. Spence January 6, 2014 at 4:36 pm #

    Brill thanks although I found I had to hold the bottom button in whilst plugging in the power to the receiver to get it to go into find mode but…. I have it all working again cheers.

  6. Rob January 25, 2014 at 12:55 pm #

    Thanks Matt, having been to British Gas Website and got no help at all, I did the man thing of trying every combination of buttons to make it work but failed miserably. I then googled it and found you, followed your instructions and with in 5 minutes the monitor was back up and running. Thank You.

  7. John January 25, 2014 at 11:19 pm #

    Thanks very much for posting this Matt – sorted mine out fine.

    You’d think British Gas would make this available on their site but there you go!

  8. spiros January 27, 2014 at 6:40 pm #

    Perfect !!!!!!!thank you so much

  9. Jaycey April 2, 2014 at 10:33 am #

    Brilliant…. Simple instructions that work…Thank you so much 🙂

  10. andy skinner April 28, 2014 at 8:16 pm #

    Matt followed your guide and voilà! Back in business. Many thanks.

  11. tori April 30, 2014 at 9:14 pm #

    Life savour

  12. Olivia May 11, 2014 at 12:26 pm #

    Thank you for this! It has been driving me crazy for months. I couldn’t find anything useful on British Gas website or elsewhere. Luckily Google revealed your answer! Star!

  13. Wayne July 23, 2014 at 7:35 pm #

    Great thanks, saved me messing around for ages trying to pair it back up again 🙂

  14. Richard August 15, 2014 at 7:29 pm #

    Amazing! That had been bugging me for a while and now it’s working again. Thanks very much!

  15. paul wiggan August 30, 2014 at 9:10 am #

    Awesome matey, was driving me mad!!!! all working now 🙂

  16. Jon Croft September 5, 2014 at 6:56 pm #

    Fantastic, works now. Thank you very much.

  17. paul September 28, 2014 at 10:51 pm #

    what about the newer ones. cant get mine to work. peeing me right off

  18. solar charger September 29, 2014 at 5:33 pm #

    It’s impressive thst you are getting thoughts from this paragraph as well as from our discussion made at
    this time.

  19. mark johnston October 8, 2014 at 11:44 am #

    Thank you for sharing. Had been planning to buy a new monitor before reading this. Worked perfectly.

  20. Yvonne October 23, 2014 at 9:19 am #

    Thank you, this worked a treat! 🙂

  21. Ian Charters, 28th October 2014 October 28, 2014 at 4:32 pm #

    This did the trick, great thanks.

  22. Brian November 5, 2014 at 1:23 pm #

    Matt Hi, Many thanks I hit exactly the same problem and could find nothing in the Instructions nor on the Brit Gas Website. Brit Gas do give the re-‘pairing’ instructions for the Square version of Monitor but not for the ‘Curved’ one.
    Followed your instructions and Re-paired perfectly. LOL I will print out and keep with instruction book in case I forget how in a year or so when Battery needs changing again.

  23. John November 5, 2014 at 2:28 pm #

    Excellent, thanks. The same as another reply, I had to depress the button as I re-attached the power supply, but I didn’t have to go through the rest of the process.

  24. Pete Gates November 5, 2014 at 4:12 pm #

    Great Contribution….After lots of pressing buttons and phoning B.G to no avail (they don’t use or supply anymore ) I I found your entry and every thing now works fine, I did have to hold the bottom button in while connecting power to display…..Now I can see if iv’e left the bathroom heater on !……As someone mentioned, perverse not having it on the B.G website… Many Thanks
    Regards P.G

  25. Pete November 5, 2014 at 10:32 pm #

    Hi Matt,
    After buying a new sensor battery I decided it was broken and was going to buy a new monitor when I came upon your explanation. Great job, worked first time. Pete

  26. deadmanjones November 12, 2014 at 8:52 pm #

    Well done that man, I was just about to throw it away

  27. Steve Perkins November 22, 2014 at 10:38 am #

    Thanks Matt, great fix and on again in seconds.

  28. Alan December 20, 2014 at 11:22 am #

    Done everything you said and i thought it had worked.
    Blue antenna shows strong signal but i do not have the coloured
    consumption dial showing at all.
    Have checked the sensor contacts and they’re clean.

  29. Graham January 3, 2015 at 10:48 pm #

    Thanks for your help

  30. Stuart Cuthbertson January 9, 2015 at 8:45 pm #

    Thanks very much for posting this!

    Note for others: where your instructions say
    “Insert the power supply back into your display and while holding the bottom ‘adjust’ button down. Press the top ‘menu’ button four times…”
    I found I had to start holding ‘adjust’ BEFORE plugging the power back in (then press ‘menu’ after plugging the power in, still holding ‘adjust’ down all the time).

    If I plugged it in, THEN pressed and held ‘adjust’, the pressing ‘menu’ bit did nothing at all.

    FWIW: As far as I can tell this is actually two independent bits of troubleshooting. My sensor was already doing the double-flash pattern before I did anything, and I didn’t need to bother with the paperclip bit, or even removing the sensor from the meter at all. In my case, the only problem was with the monitor unit. So I only had to follow steps 1, 5 and 6. I think you only need to do steps 2-4 if your sensor doesn’t do the double-flash thing. (But I guess it can’t hurt.)

    Thanks once again, without this blog post I would have been taking the whole thing to the tip!

    • Jim Newmark April 15, 2017 at 5:37 pm #

      Yes indeed. Thanks so much for the original posting as well as the careful further explanation. The trick is indeed to keep the bottom menu button depressed WHILE clicking the top menu button four times to get “find”. It is not at all intuitive and, like other contributors, it has been bugging me for ages!

  31. adrian February 6, 2015 at 11:33 pm #

    brilliant thanks I couldn’t get it connected until I found this info. A+!

  32. annjeanette March 6, 2015 at 12:08 pm #

    Brilliant !!!! was just about to ring British Gas to ask, then saw your instructions so you’ve saved me the hassle and a few pennies on a phone call….. Thanks..Annjeanette ………..P.S…. I BOUGHT MY NEW BATTERY FROM MAPLINS SO DIDNT HAVE TO ORDER IT OF INTERNET ..

  33. andrew September 14, 2015 at 8:15 pm #

    Hi, brilliant solution! Wish I saw this before I wasted my time talking to British Gas….Thanks again!!

  34. Artur September 20, 2015 at 11:27 am #

    You saved my life 🙂 I was struggling to fix that but after your instructions I finally managed to fix it. Thanks a lot!!!

  35. David October 6, 2015 at 9:21 am #

    Excellent instructions. Monitor now working again and you saved me the £40 cost of a new monitor. Thanks.

  36. Simon December 27, 2015 at 5:49 pm #

    Thanks. Worked first time!!

  37. Tug February 7, 2016 at 4:41 pm #

    Thanks for this. I was wondering why British Gas can’t manage to put this info on their website

  38. Len Jones March 5, 2016 at 5:29 pm #

    Thanks Matt! I’ve just got mine going again thanks to your instructions 😎

  39. Graham August 11, 2016 at 8:04 pm #

    Thanks for the instructions. British Gas website is useless, why don’t they publish this info. Thank god there are people like you, again thanks

  40. Barry November 14, 2016 at 4:33 pm #

    Thanks very much Matt, you posted this info some time ago but as you can see its still being used very effectively. I was stuck in a call waiting queue for ages and just happened to run a search when your info popped up. This info doesn’t seem to be on the BG website, wonder why?
    Thanks again

  41. David M January 29, 2017 at 11:50 am #

    After changing batteries our monitor didn’t work any more, so had it in a drawer for a couple of years. Were going to throw it away yesterday, googled around on the off-chance, found your blog, and now it works again! Fantastic! Thanks!

  42. Dave N July 3, 2017 at 4:26 pm #

    Thanks for the info above which did get my monitor working for a while then it stopped again, thought it was the battery but it may yet be the sensor (battery was new).
    Anyway could not get the display off “join” using the combination of holding the bottom button down whilst pressing top button 4 times. Saw on another site that if you just keep holding bottom button down whilst plugging in, (don’t press top button,) after about 15 seconds the screen went from join to find and the sensor paired up again.

    • Keith December 16, 2017 at 4:56 pm #

      Hi got early square b/gas monitor electric saying 90000£ a day gas is 20p a day can not find battery or sensor on meter .b/gas no help say it will right it self thanks keith

    • nickm April 15, 2018 at 6:34 pm #

      thank you the 15 second bottom button ‘trick’ worked for me

  43. David July 8, 2017 at 4:06 pm #

    The advice is still relevant and needed after all these years. Just fixed mine. You’ve helped a lot of people. Thank you for taking the time and effort to post the info and keep it accessible.

  44. john December 19, 2017 at 10:51 am #

    Thank you for posting these instructions; they are just what I needed.

  45. Mary December 22, 2017 at 1:17 pm #

    Thanks! Like everybody here it was driving me mad. I also found you had to have the lower button pressed WHEN you connected power to the monitor.

  46. Lydia Evans January 16, 2018 at 9:46 pm #

    Had tried everything to get monitor working again then came across your post. I followed your instructions and monitor is up and running again. Thank you so much, was going to buy a new one but don’t have to now.

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