Tutorial

SMETS1 Secure Liberty 100/110 smart meter guide for WAN, HAN, lights and buttons: DIY tutorial series

  • 14 September 2020
  • 54 replies
  • 33699 views
SMETS1 Secure Liberty 100/110 smart meter guide for WAN, HAN, lights and buttons: DIY tutorial series
Userlevel 7

Updated on 08/09/21 by Jess_OVO

 

SMETS1 Secure smart meters - your guide

 

This guide is about S1 Secure Liberty 100/110 smart meters. If you have an Aclara S1 smart meter, check our guide here. For information about how S2 meters communicate, please see this guide 

 

What do the buttons on the keypad do?

1 - Displays cost of consumption and units used on the current day and previous day
2 - Displays cost of consumption in the current week and previous week
3 - Displays cost of consumption in the current month and previous month
4 - Displays historical data comprising monthly units consumed and cost of consumption
- Displays ‘Not Used’
- Displays tariff name, standing charge per day, active rate register(s) along with the consumption and cost per unit recorded in each rate register (Will provide Eco-7 readings: IMP R01 is the night read, and IMP R02 is the day read)
7 - Displays ‘Not Used’
8 - Displays ‘Not Used’
9 - Displays total import and export register values (will provide a total reading after IMP KWH)
0 - Performs display check and then displays date, time, load and CO2 data of the current hour and current day, yesterday, last week and last month (will show 'COMMISSION' instead if meter needs to be commissioned)

- Used for prepayment customers - Switches the display to UTRN(vend) entry mode; serves as backspace key during UTRN(vend) entry; enables Emergency Credit when made available; initiates supply reconnection from ‘READY' state. (Activates vend mode/Used to start reconnection process.)
B - Activates auto scroll display from sleep mode; used to scroll back through a display sequence; initiates UTRN(vend) authentication process; mutes alarm; used to confirm supply reconnection from ‘READY’ state.

Activating 'Boost' functionality on Liberty 110/112 meters

If you’re economy 7 customer with a Secure Liberty 110/112 (5-port) meter  and you would like to activate the appliance that is connected to your fifth terminal during peak hours, you can do so using the smart meter keypad.

You can activate this either on the IHD or the meter up to 10 times a day and it will turn on anything attached to the 5th terminal for 1 hour, this will be charged at the peak unit rate.

To activate the boost function:

  • Via the meter, press '2' on the keypad and press the 'A' button to activate - you'll hear a click when the boost has been activated and your meter display will read 'BOOST ON'
  • Via the Pipit IHDpress 'Dual Fuel' and then tap on the 'Status' button at the bottom of the screen on the electric side of the display.

 

WAN and HAN:

  • An issue with WAN will affect the ability of the electricity meter (and gas meter, if present) to send us data
  • An issue with HAN will not affect the ability of the meter to send us electricity data, but will affect the gas meter and IHD


What is WAN (Wide Area Network)?

 

WAN allows an electricity smart meter to send/receive data (such as meter readings) securely through the S1 Communications Hub. It uses a roaming SIM that works on 2.5G to do this - the same kind of data network your mobile phone uses. If you have good 4G signal but no 2.5G in your area, the meter will have no WAN.

 

 

This LED light represents if there is a WAN connection. It will also indicate how strong this connection is by flashing between 1 - 5 times before pausing.

  • 5 flashes indicates the strongest WAN connection
  • 1 or 2 flashes indicates weak WAN connection
  • Solid light indicates there is no WAN


What is an S1 Communications Hub?


The communications hub attached to the smart electricity meter is effectively our smart kit's brain. It works a little bit like a mobile phone, using a sim card to allow data to be received and transferred from the smart meters to OVO.

The hub allows for information to be stored, such as your meter readings and energy consumption history. This information is then relayed to the correct meter and will also be reflected through your IHD.

There are two main communication channels used by the hub; WAN (Wide Area Network) and HAN (Home Area Network).

How does WAN work?


Using the sim card installed in the S1 Communications Hub, the member's electricity smart meter will search for the strongest mobile data network in the area. (We call this roaming as the meter is able to pick and choose it's network depending on strength, unlike most mobile phones.)

  • If the electricity smart meter is able to latch onto a network, WAN will be established. This will allow for data to be transferred to between the smart meter(s) and OVO.
  • If a connection is unable to be established, it will be known in the industry, as a 'no-WAN'.


What do we mean by 'no-WAN'?


If there's 'no WAN', your electricity smart meter can’t connect to a network. This means no data can be transferred between the smart meter(s) and OVO.

  • This will mean you will need to provide your meter readings manually. 
  • However, providing your IHD is within the HAN, the IHD will continue to display your consumption as normal.


What do we mean by intermittent WAN?


If the mobile phone network(s) in your area is weak, the WAN connection may drop in and out. This is known as 'intermittent WAN'. In such instances, you will need to wait for your electricity smart meter to establish a WAN connection again. We recommend providing manual meter readings in the meantime.

I think I have an issue with my WAN... What can I do?


If you believe you have an issue with your WAN, go through The S1 Smart Meter Health Check. From this we will be able to identify:

  • If you have WAN and how strong this signal is
  • If the meter has been commissioned and has the ability to communicate with us
  • If a master reset may be able to resolve the issue



What is the HAN (Home Area Network)?

 

The HAN is a secure network that works in the same way as other wireless systems in the home. It allows the smart electricity meter to communicate with the smart gas meter IHD and Smart Relay (remember: gas meters can’t send us readings on their own or send data to the IHD).

A smart electricity meter uses the HAN to collect the readings/data from the gas meter. It also uses HAN to send information to the IHD and to connect to the Smart Relay. HAN only works if the gas meter and/or IHD is within range.

 

 

The HAN light will be solid when the HAN is open - this will activated during install (when pairing the electricity meter to the gas meter and any devices) as well as when pairing an IHD or smart relay via SFE. Once this process has completed, the HAN light will turn off.


What do we mean by 'no-HAN'?


If there’s ‘no HAN’ - the gas smart meter and/or IHD, can’t communicate with the electricity smart meter. This affects:

  • Gas meter - If the smart gas meter has 'no-HAN', it can’t send the meter readings/data back to the electricity meter. In this instance, you would need to provide a manual meter reading.
  • IHD - If the IHD is out of range from the HAN, it can’t display any data from the smart meters.


​​​How do you identify if a device is connected to the HAN?


Gas meters

  • In the bottom right-hand corner of the gas smart meter screen, there is a HAN symbol. The symbol will be flashing or solid:
    • Flashing - This would suggest that the meter is not connected to HAN. In this case, please complete  The S1 Smart Meter Health Check.
    • Solid - This is confirmation that the gas meter has been secured to the HAN. However it does not necessarily indicate that we are able to communicate with the gas meter. 

IHDs

  • You will need to check the Wifi symbol on the IHD:
    • For Pipit IHDs, see the guide linked here
    • For Chameleon IHDs see the guide linked here

 

I think I have an issue with my HAN... What can I do?


If you believe you have an issue with your HAN, complete The S1 Smart Meter Health Check. From this we’ll be able to identify:

  • If the gas meter is connected to the HAN
  • If the issue is with a meter or a device (please see processes below...)
  • If the meter has been commissioned

 

The metrology light

 

This light can be found to the right of the keypad and will most likely be continuously flashing which indicates there’s power going through the meter. All electricity going through the meter is measured, which is represented by the flashing of the LED. The meter is measuring this in kilowatt hours (kWh) and 3,200 flashes equal 1 kWh.

 

 

 

What to check if you’re off-supply

 

If you’ve lost supply and it’s not a power cut (check this by dialing 105) it could indicate a fault with your meter or the DNO equipment before your meter.

 

If the metrology light is off it’s worth checking that your meter is in credit mode - press any key on the meter to wake up the screen. It should then auto-scroll through various screens. The first display shown will be the meter mode either ‘CREDIT’ or ‘PAYG’, if your meter is incorrectly showing PAYG contact our Support Team. If the meter is in CREDIT mode contact your DNO to check the supply to the meter.

 

 

What are the dimensions of the Secure S1 smart meters?


Dimensions below are shown in millimetres.

Electricity meter


The dimensions are: H 178mm X W 146mm X D 64mm.



Gas meter


The dimensions are: H 264mm X W 235mm X D 174mm.
 

 

That’s your guide to SMETS1 WAN and HAN - leave a comment if we’ve missed anything out!

 

OVO member but not got a smart meter yet? - Book today!

 

Interested but not yet an OVO member? - Check out our plans!

 


54 replies

Userlevel 7
Badge +5

Great. Thanks @Jess_OVO I’m happy with that.

… please forgive me for pursuing this. Í’m still trying to view the situation from where the customer stands.

 

The SMETS1 meter itself knows its true status. In this case there are four possibilities:

1: Grid OK and Contactor closed. So if there’s no power in the house then it’s something inboard of the meter, such as the main trip in the consumer-unit.

2: Grid OK and Contactor open. Most likely to be a PAYG account configuration with no credit. (Rarely it could be a faulty meter, which we’ll ignore for now).

3: Grid down and Contactor closed. No power whether the account is PAYG or Pay-monthly.

4: Grid down and Contactor open. Customer needs to know because otherwise the grid will be brought back up and they’ll still be in the dark about this(!)

 

So why isn’t the meter status being shown to the customer via a message being sent to:

a: the meter’s LCD screen (using the backup battery of the internal power supply)

b: the IHD, which has an available messaging system whilst its battery holds up for a couple of hours at least

c: the OVO App, which is capable of sending an Alert Notification

d: the customer’s online account page, which could additionally have a preference-setting to send an email under these circumstances.

 

Isn’t there a much bigger problem than there needs to be because the Billing System software isn’t using the available messaging systems?

Userlevel 7

 

The metrology light is not a satisfactory indicator to check because it won’t be flashing in either case.

So if an ordinary customer​ isn’t able to tell the status of his electricity supply without summoning the DNO engineer to site, then “we’ve” got a problem. It should abundantly clear to an end-user what the problem is by reading the LCD display.

 

Yep - you’re right, @Transparent, which is why I’ve already amended the guide above:

 

Updated on 08/09/21 by Jess_OVO

 

What to check if you’re off-supply

 

If you’ve lost supply and it’s not a power cut (check this by dialing 105) it could indicate a fault with your meter or the DNO equipment before your meter.

 

If the metrology light is off it’s worth checking that your meter is in credit mode - press any key on the meter to wake up the screen. It should then auto-scroll through various screens. The first display shown will be the meter mode either ‘CREDIT’ or ‘PAYG’, if your meter is incorrectly showing PAYG contact our Support Team. If the meter is in CREDIT mode contact your DNO to check the supply to the meter.

 

 

Userlevel 7
Badge +5

Erm…. I’m not sure if I’m missing something here. I don’t think we’ve quite answered the question.

 

Here’s an internal diagram of a SMETS1 Electricity Smart Meter Equipment (ESME):

 

 

If the ESME is configured for pay-monthly, then the contactor stays closed.

If the Billing System software believes that the ESME is on a PAYG tariff, then it checks to see if there is credit on the account. If not, then the contactor opens.

The metrology light flashes according to the power being drawn by the house. So if the contactor is open then it doesn’t flash. There is no current passing through the sensor, even ‘though the electronics is still powered.

If there is power arriving from the Grid then

  • the LCD screen should still be live
  • OVO still receives data from the Comms Hub
  • the IHD might still receive data if its battery is charged
  • there is information available on the OVO App

So there should be clear distinction between

a: a PAYG/Boost account with no credit

b: a loss of incoming power from the Grid

The metrology light is not a satisfactory indicator to check because it won’t be flashing in either case.

So if an ordinary customer like @Zalek isn’t able to tell the status of his electricity supply without summoning the DNO engineer to site, then “we’ve” got a problem. It should abundantly clear to an end-user what the problem is by reading the LCD display.

As I’ve never had a SMETS1 meter, and never seen the LCD on a meter running on a PAYG tariff, I’m only able to describe the theory behind my argument. So please bear with me whilst I ask for this point to be clarified.

 

Userlevel 7

Thanks for catching this one, @Zalek - we’ve updated the guide to make this clearer to others in future.

 

It’s also worth mentioning here that this meter does have a back-up battery which can support the meter when it loses mains power, allowing checks to be carried out on the meter to work out what’s caused the loss in power.

 

It’s all been quite a mess. Turns out the account we set up in August as DD has been cancelled (apparently something went wrong with “the system”) and it reverted back to how it was originally, which is Pay as you go. We had no idea until coming back home to find no power and no gas. All sorted now.

 

Sorry to hear this, @Zalek - sounds like a really frustrating (but thankfully rare) thing to happen. Glad the team have managed to get things sorted now. Have you been able to login to your online account or OVO app (download for Android or iOS) to check your usage data is being received yet?

Userlevel 7
Badge +4

In that case, your wish is my command. The updates have been made, so hopefully that should be fixed now. If you ever spot any other mistakes on the forum guides, feel free to let us know in the relevant thread. We’ll make sure to get them fixed up!

Likewise, feel free to flag up any mistakes pretty much anywhere on OVO’s websites too. Whether you go via the forum or Support Team, it’ll be passed on to the right teams from there. :)

Userlevel 1

It’s all been quite a mess. Turns out the account we set up in August as DD has been cancelled (apparently something went wrong with “the system”) and it reverted back to how it was originally, which is Pay as you go. We had no idea until coming back home to find no power and no gas. All sorted now.

 

@Blastoise186 - yes, I can see that now. I assume if there is no power going to the meter (and, obviously, Metrology light is off) it’s probably the whole meter being dead (since there is no power). I think it would still be good to clarify that point, if anyone knows.

 

 

Userlevel 7
Badge +5

Is this a new flat/house which you’ve just moved to, @Zalek ?

Or did this ‘fault’ suddenly occur without warning?

I’m puzzled that you had no relevant message on the meter itself or the IHD.

Userlevel 7
Badge +4

Hey there @Zalek !

Thanks for the catch. I think the guide was written primarily with Pay Monthly/Credit customers in mind, rather than Pay As You Go/Prepayment customers, since the Boost Forum usually takes care of members on Boost PAYG. If you’ve run out of PAYG credit the meter should usually show you that on the display, but I can see where you’re coming from there. Nice catch!

I’ll go ahead and have a chat with @Tim_OVO about this, as it might be possible to update the guide to clarify things a bit better and hopefully reduce confusion. We’ll keep you posted with any updates.

Thanks for bringing this up! I hope you managed to get the lights back on.

Userlevel 1

OK, so this is going to be a stupid question but I got  to ask it.

 

If there is no power (e.g. power cut) is the meter going to go dead too? I mean is there a back up battery or something like that?

I am asking because the guide above would suggest that there is?

“If your supply is off and you’re unsure if this a meter fault or power cut, the metrology light is a good indicator. If off supply and:

  • Metrology light is off - power is not entering the meter indicating a fault with the incoming supply. This means their may be a power cut or issue with DNO equipment, therefore the member should check with neighbours and potentially contact DNO.”

I had that very situation. No power in the house and Metrology light off. I had DNO engineer out and they told me that there is power in the meter. To cut a long story short, it turned out that the meter is set up, unknowing to me, as a pay as you go and there is no credit in the meter.

So, I guess the above guide, that suggests if no power in a house AND Metrology light is off indicates fault with the incoming supply is not correct?

Userlevel 7
Badge +4

No worries @Hannahbunve ! I’m glad we managed to solve that puzzle for you. :blush:

I do have some advice that I’d also like to throw in as a free bonus as well. Not least because I like giving people free stuff, but also because it could potentially save you some cash as well.

Economy 7 isn’t always suitable for everyone and it works best if you’ve got things like Storage Heaters and/or you place at least two thirds of your electricity usage each day between the cheaper hours - usually between roughly midnight and 7am but the Support Team will be happy to confirm that and we can help with that on the forum too.

If you don’t meet the right sort of profile for Economy 7 or you don’t use it to the best of the capability, then E7 might not be right for you and you could end up paying more for your electricity than you should. The Support Team can help with calculating whether you’re better off switching back to Single-Rate or staying on Economy 7 and there’s no charge for asking for advice. If you do switch to Single-Rate, this is considered a change of contract and you might be charged a fee - you’ll always be informed upfront and you can always ask to leave things as they are instead.

If you do request to switch to Single-Rate, your Smart Meter can be updated remotely via SMETS Commands, so you won’t need to have it replaced or have an engineer visit to disable Economy 7 mode.

I hope this helps. If you need any more advice on what Economy 7 is or what it means, we’ve got some great guides on the Forum like this one.

But if you’re still confused, feel free to ask. :)

Oh my..I feel silly 🙈 I have checked pressing 6, and it gives me the reading I need. I didn't realise at all it was economy 7! 

 

Thank you all for all your help! I appreciate it :)

Userlevel 7

Hi @Hannahbunve and welcome to the OVO online community!

 

Sounds like your Secure S1 meter is (or used to be) Economy 7, in which case our community volunteer @Blastoise186 gives some great advice in how to take the reading - 

 

 

If you have Economy 7, you’d also need to press 6 three times to get the Night Reading from IMP R01 and press 6 again to grab the Day Reading from IMP R02.

 

Have you checked your meter’s reading schedule with the Support Team? Requesting an update to a daily or half-hourly schedule will mean you shouldn’t need to read the meter manually, although we’re on hand here if you notice any communication issues.

 

If you haven’t already it’s worth checking the usage pages of your online account or OVO app (download for Android or iOS) which shows the usage info we’re receiving from your meters.

 

Hope this helps - let us know how you get on! :slight_smile:

Userlevel 7
Badge +4

No worries. :)

You’ve definitely got a SMETS1 Secure Liberty 100 electric meter there, which means the gas meter will also be a Secure Liberty as well. You are definitely pressing the correct button as 9 is the one to grab a meter reading from this meter model under IMP KWH. If you have Economy 7, you’d also need to press 6 three times to get the Night Reading from IMP R01 and press 6 again to grab the Day Reading from IMP R02.

If you happen to have an In-Home Display as well, you might be able to grab a meter reading from that instead of fiddling with the meters. The Secure Liberty meters aren’t as user friendly as Aclara and Flonidan meters, but they’re not too bad. Your IHD should be able to grab the meter readings under something like Meter Info - which is where I can get my readings from using the Kecleon Brothers (two Chameleon IHD6).

If you're still struggling, ask the Support Team to try running SMETS Commands to grab Instantaneous On-Demand Readings from both meters. Not only should this provide the correct reading, but you can also ask for these to be logged to your account as the current reading as well. There’s no charge for this kind of request and if it works, the meters should usually respond within about five minutes or so.

Next time you contact the team, please let them know about this thread and tell them that Blastoise186 has been helping you out via the OVO Forum. Sometimes good things can happen when you do that. :wink:

It might be possible that your meters are also being migrated to DCC to run under the National Smart Meter Network right now, after which they’ll run as “SMETS1+” and should work with any supplier freely. But this can take a while to migrate and in some cases, the connection might drop out during the process.

Have you ever had readings go in from the meters? It might be worth increasing to either Daily or Half-Hourly Mode to boost your chances of getting Smart Readings in more reliably and you’ll be able to spot issues more easily. If there are persistent comms issues, the team can raise an escalation to have this investigated more deeply and OVO can attempt a few fixes that may help get things going again. You won’t have to pay for any of these fixes - they’re complimentary and included as part of the service. Unless you smash up the meter with a baseball bat that is! You would have to pay to repair deliberate damage or vandalism - but I highly doubt anyone would do that!

Welcome @Hannahbunve ! :)

I can definitely see what I can do here. Please could you snap some photos of your meters and pop them in your next reply for me? I’m definitely happy to help you work out what’s going on here and once I know what meters you have, I can provide the right info to make sure you’re getting the right readings.

Of course! I feel like I need to include (although I likely don't!) I am pressing button 9 and reading the first set of numbers after IMP KWH. 

Here's a couple pictures of our Electric meter, the gas one is absolutely fine. :) 

 

Userlevel 7
Badge +4

Welcome @Hannahbunve ! :)

I can definitely see what I can do here. Please could you snap some photos of your meters and pop them in your next reply for me? I’m definitely happy to help you work out what’s going on here and once I know what meters you have, I can provide the right info to make sure you’re getting the right readings.

Please bare with me as I am terrible at explaining things!

So I have been giving manual readings from both my gas and electric smart meters as for some reason there is almost no connection. My gas meter has been absolutely fine, however, my electric meter seems to be playing up quite a bit.

Every 1 to 3 weeks at least I have been giving readings of 14***, now 15*** but on 13th July my smart meter sent a reading randomly of 11***. That is such a big difference and I haven't been able to send the reading I have been getting as it is too high and its not accepted.

I have emailed and was told that I have been giving a total reading and to look for a number starting with 11. I have been through it a fair few times and see no number that is anywhere near that.

Is it possible my meter is faulty or am I doing something wrong? 

 

Userlevel 7

Hi @Dc1789 and welcome to the OVO online community.

 

Great question to ask about reading your Liberty 100 smart meter. Our amazing community members are already on it in terms of offering some really sound advice - 

 

 

button 9 scrolls through the various readings. The one you require is the number displayed after it cycles past ‘IMP KWH’. This is the import reading.

This SMETS1 meter should now be readable as a smart meter with a lot of suppliers, so if you are still being asked for readings it may be worth looking around to get this automated (and possibly a cheaper tariff in the process!)

 

If your current supplier hasn’t been able to receive the reading automatically (and there’s quite a few who should be able to - find out more here), you’ll need to press the ‘9’ button to read the meter manually. According to our Liberty 100 guide (which I’ve moved your comment across to) the ‘B’ button “ Activates auto scroll display from sleep mode; used to scroll back through a display sequence; initiates UTRN(vend) authentication process; mutes alarm; used to confirm supply reconnection from ‘READY’ state.” So I think @nealmurphy is spot on in suggesting this is more relevant for PAYG customers.

 

 

 My problem is that the IMP KWH reading (19667}is 2500 units more than the Using Now reading(17188), which is the one everyone has accepted and told me to use till now. As I have just switched providers,using the U N reading, that presumably will mean a serious cost hike. 

 

 

Sounds like the opening meter reading you’ve supplied might be incorrect. When you give this reading to your new supplier it’ll be ‘validated’ - whereby the industry checks this reading lines up to the previous readings. As this reading will be out-of-line to the smart meter readings which should have been sent automatically this should be flagged during the validation process. It’s worth checking the first statement you receive from your new supplier as the reading may have already been corrected. If not your new supplier can raise a ‘Read Dispute’ to get this corrected and make sure there’s not a leap in your charges. You can read more about the ‘Read Dispute’ process here

 

Hope this helps get this sorted, if not pop back with any more queries - we’re always happy to help! :relaxed:

Thanks. Will try that too.

Userlevel 7
Badge +4

Thanks @nealmurphy ! Your answers so far are pretty much spot on as far as I can tell. Thanks for helping @Dc1789 out so far. Even if you’re no longer with OVO, we’ll always be happy to help you out on the forum completely free of charge. You won’t get any marketing emails from OVO just by being on here.

IMP KWH is generally supposed to be the reading you’re after if you are on a Single-Rate tariff, but I know a trick you can do. If your meter is communicating properly with your new supplier, you can ask them to pull an Instantaneous On-Demand Reading using SMETS Commands to grab the current reading. Not only can they tell you what the reading is when the meter responds to the command, but you can also ask for that reading to be logged to your account as that days reading too.

Once you know what that reading is, you can compare it to the one that’s on both Usage Now and IMP KWH to see which one matches up with the SMETS Commands. That’ll be the one to rely on going forwards. :)

Thanks. Will try that. Don’t think I have multiple rates though which I am assuming is something like economy 7 which we don’t have.

Userlevel 6
Badge +1

I’m not sure what the B button shows. Hopefully a more knowledgeable person on here may be able to say. I believe the A and B buttons are generally used for prepay settings.

It may be worth checking your bill for the period when the meter was installed as this should show the final reading of your old meter and then the consumption of the new meter (which usually starts from 0kWh.

If and when your supplier manages to remotely read this meter it is likely that they will get the IMP kWh reading shown on the display by button 9. This assumes that you are on a single rate tariff. I believe if you have multiple rates such as day and night, the individual readings can be seen by cycling through the readings using button 6. It may be worth checking this to make sure there are not two sets of readings that add up to the total (19667) and the using now reading is only displaying the current active rate.

..

Thanks. My problem is that the IMP KWH reading (19667}is 2500 units more than the Using Now reading(17188), which is the one everyone has accepted and told me to use till now. As I have just switched providers,using the U N reading, that presumably will mean a serious cost hike. So if I am to use IMP, what is the Using Now reading for? 

Userlevel 6
Badge +1

Hi @Dc1789 button 9 scrolls through the various readings. The one you require is the number displayed after it cycles past ‘IMP KWH’. This is the import reading.

This SMETS1 meter should now be readable as a smart meter with a lot of suppliers, so if you are still being asked for readings it may be worth looking around to get this automated (and possibly a cheaper tariff in the process!)

We have a series 1 Liberty 100 electricity meter fitted by OVO. We are not currently supplied by OVO. Previously I was told to use the reading reached by pressing button B and taking the reading after Using Now and this has been accepted by others. I am now being told to press button 9. This gives a reading which is around 2500 units higher. Why is there such a difference between the readings. The Using Now reading as I recall aligns with consumption before the meter was fitted

 

Reply