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Rank 6
April 11, 2020
Solved

OVO SMETS2 smart meter communication - what do the WAN, HAN lights mean?

  • April 11, 2020
  • 72 replies
  • 19742 views

Hi. I am new to the forum.

I have been with OVO for 10 months and I have had 2 SMETS2 meters fitted not long after I moved to OVO.

Unfortunately, the system has never worked properly since installation !

What used to happen intermittently was one of 2 scenarios:

The WAN light used to go off and my smart meter would stop sending my meter readings to OVO or the HAN light used to go off and my IHD would stop working with the message "waiting for current data"  being displayed.

Last week all 4 lights (including the WAN and HAN lights) continued to work on the meter (they all flashed on once every 4 or 5 seconds) and yet my IHD stopped working which had never happened before whilst all 4 lights were working !?

A couple of days ago the IHD came back on again but despite all 4 lights still displaying on the meter, my meter readings don't update on the OVO app.

How is this ?

 I thought if the WAN (Wide Area Network) light was on, my electric meter could communicate my meter readings to OVO.

Also I can't understand why last time, my IHD lost the wifi signal in the first place with the HAN (Home Area Network) light being on ?

By the way I have a Chameleon IHD and regarding the wifi signal on the IHD, it is a strong signal (4 bars) as my IHD is only around 5 meters from the meter with only an internal wall (4" thick) which has no effect on the wifi signal. 

The lowest it goes down to is 3 bars.

Any feedback would be much appreciated.

Mike

 

 

Best answer by Transparent

Updated on 30/10/25 by Ben_OVO

Sorry to hear of the communication issues you’re having with your S2 smart meters - In order to diagnose what might be causing these issues we’d recommend carrying out a smart meter health check.

For a full lowdown on what the lights on your meter indicate check out the detailed response from our Community member below:

 

WAN, MESH and HAN lights:

 

WAN - Wide Area Network

Shows your communication hub’s ability to communicate with your supplier. Flashing indicate a connection. 

 

MESH - Mesh Communications Network

If you have a SK2 or SKU3 type of Communications Hub, then both WAN and MESH are active, and will display the slow-flash from these indicators if all is well.

 

If you have a SKU1 (85% of houses do), then the MESH indicator will always be off because that section of electronics isn’t present.

 

HAN - Home Area Network

This light shows the connection status of your electricity meter, gas meter and IHD with your communications hub on the HAN (Home Area Network).

 

See this topic for a complete guide on what each hub indicate light means.

 

 

What the lights mean when there’s a fault:

 

Now let’s just separate out the different faults you’ve been seeing.

 

A; A solid WAN may indicate a lack of communication with OVO. the WAN and/or HAN indicator going off is very unusual. In the case of a fault on either of these networks, the correct flash rate should be “medium” (roughly once every 5 seconds).

Communications Hub indicator error sequences

It’s unlikely that you’ll ever actually see the “High” flash rate because this occurs when the Communications Hub is starting up and trying to find the networks.

An indicator that’s completely off means that this part of the code isn’t operational at all. Most customers have SKU1-type SMETS2 meters, in which case the Mesh indicator will be off. Ie there is no Mesh network for this model.

 

B; It isn’t unusual to have an IHD not displaying correct data but still have the HAN indicator showing the usual slow-flash. The indicator only shows that the Zigbee carrier frequency is alive. Frustratingly it doesn’t mean that any useful data is being transferred!

The same is true of the signal-strength bars on your Chameleon IHD. They will still be present even if the code receiving/interpreting data from the Comms Hub isn’t working. :confounded:

 

C; In similar fashion, just because the WAN indicator is in slow-flash mode doesn’t mean that OVO are actually receiving your data. Since you’re in the Telefonica territory, the WAN merely informs you that the carrier between you and the mast is alive.

The only way to tell if OVO is successfully receiving data from your site is to login to your online account and view your Usage statistics.

 

So there’s some initial feedback on what you’ve carefully described to us. And you might also want to read this topic where a few of us have recently been discussing IHD-related errors, and this topic is a great one for the ‘Waiting for current data’ issue.

 

 

How to confirm no communication from solid WAN 

 

If the WAN on your meter is solid, and you’ve confirmed no usage data on your online account, you can reach out to our Support Team to book an appointment to get it all fixed, free of charge.

 

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

Smart meter not communicating? Fill out this Online Form

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

72 replies

Newcomer
April 13, 2020

Mines exactly the same. Did you recently have communication from OVO to change over from their 'old' system to their 'new' system? 

Rank 2
April 13, 2020

No, I’ve had my smart meter for months, but only recently got everything working properly since the 7th March, and has since been sending daily data ever since for exactly a month and then stopped on the 7th April. 

Transparent
Rank 20
Rank 20
April 13, 2020

Hi @MajorSqueeze and @stusm1th and thanks for posting to the Forum.

Have a look at what I’ve been discussing with another customer over here on another Topic last week. We’ve both been lacking Smart Meter reads after 7th.

Once they surface again tomorrow, I expect one of the Moderators will merge this Topic across ( @Nancy_OVO please!). The comments get sorted into date order, so feel free to discuss or ask further questions on either Thread.

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Rank 2
April 13, 2020

Thank you. That’s no coincidence! Let’s see if it all sorts itself out when OVO get back in.  Cheers

Transparent
Rank 20
Rank 20
April 13, 2020

Hi @Chissy23 … and many thanks for @Mikeovo responding before I got here! :clap_tone1:

So Chissy23, I suggest you hop across to the Topic which MikeOVO started here on the same subject a week ago!

And, Mike, if you don’t understand how I created that link:

  • first write the word(s) to be used as the link. I used “here”
  • in another Tab, find the Topic you want to link to and copy (Ctrl-C) the URL page-reference at the top of your browser-bar
  • return to the original window, highlight the word “here” by selecting along it with your mouse pointer
  • click the link icon next to the smiley face at the top of your Forum edit window
  • copy (Ctrl-V) the URL into the dialogue box which has just opened

     

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Transparent
Rank 20
Rank 20
April 13, 2020

No, not just coincidence @MajorSqueeze … but it’s very useful that you’ve posted here. There might be just a few of us whose Smart Meters haven’t been read just after midnight on 9th April (which is the symptom we’re discussing).

OVO’s SMETS2 engineers can spot the pattern by joining the dots between us. It might be that:

  • we’re all connected to OVO via the same telecoms mast
  • we all received upgraded meter code of a particular version
  • we all started our current contracts at the beginning of December

So every bit of feedback is useful.

… On which note, could you please revisit your Forum Profile and give us a clue as to whereabouts in the country you are! Many thanks.

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Rank 2
April 13, 2020

Done.

 

Is this something I’ll need to phone OVO about tomorrow, or do they frequent these forums looking for these issues and take them away behind the scenes? 

Transparent
Rank 20
Rank 20
April 13, 2020

No, you won’t be able to all OVO tomorrow @MajorSqueeze . They’ve closed their 4 call centres to all but emergencies.

But in any case, I think the current issues we have with SMETS2 meters are best discussed on the Forum. Here we can compare with what others are seeing, and attempt to clarify which symptoms each of us is reporting.

One of the Moderators, @Tim_OVO is trying to keep track of our Feedback, and I’m inserting inter-Topic links to help with this.

You’ll see that I posted here last week, a list of the mix of current “faults” which need analysing and testing.

Occasionally you’ll see me tag @BenS_OVO who is much more of a “techie”. But that’s just so he receives an alert that we’re discussing something relevant to the SMETS Engineering Team. Don’t expect him to pop up here on the Forum unless he’s needing to clarify something.

 

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Transparent
Rank 20
Rank 20
April 13, 2020

Thanks for merging the two Topics @Amy_OVO 

I’m hoping @Chissy23 will pop us again soon and let us know what still needs clarifying.

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Newcomer
April 13, 2020

Hello again! Thanks for moving the thread. My smart meter is still only showing gas. The electricity symbol/price has disappeared. I am in Northamptonshire.