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Rank 2
May 26, 2026
Solved

Economy 7 not working through old RTS meter - will smart meter work in apartment block?

  • May 26, 2026
  • 65 replies
  • 710 views

Hi, we are having a bit of a saga here, about a month ago our water immersion heater that works on the economy 7 stopped working. We’ve had various plumbers and electricians at it and it’s still not working, but one of them suggested that we try and see if our storage heaters (which had been turned off for a while) were working. The storage heaters didn’t work either, so having tested everything he came to the conclusion that the problem must lie with the electricity meter. It’s an old one, probably still the original from when the apartments were built 25/30 years ago I think. The electrician said he was fairly sure that a smart meter would not work here, as we are in an apartment block. Have called OVO today to ask for someone to come and have a look at it. They were very insistent on booking an appointment to install a smart meter, which has duly been made, but will it work? And if, as seems likely, they can’t get a smart meter to work in my flat, what is my next possible course of action? At wits end, any advice from anyone who’s experienced a similar issue would be hugely appreciated

Best answer by ConfusedJim

Updated on 10/06/26 by Ben_OVO

We’ve had a bit of a breakthrough, one of the flats upstairs managed to get the issue fixed (they were eight months without the economy 7 working so no storage heating and no main water tank all winter!). Finally an electrician noticed that there’s no timer clocks in these apartments, so by fitting one to the water heater and storage heaters he managed to get them going again. Thank God for him because about half a dozen electricians have been to a variety of different apartments in the block and none of them were on the right track. 

The man from OVO’s here right now, having heard the story he reckons the combination of the new meter and timer clocks will fix it too.

 

So it seems there was never anything wrong with my neighbours new meter (Dave from OVO just had a look at his too and said yeah looks like it’s all fine) it just needs a small rewire in the flat and fingers crossed we’ll be sorted 

Firedog wrote:

 

Remember we’re talking about two completely different sorts of supply here. If I’ve understood the situation properly, flats in your block were fitted with RTS systems to control their heating (space- and water). Some occupants were unaware of this, or of the fact that RTS was going away. So now the RTS signal has finally been switched off, the problems for those who hadn’t acted to get an alternative set up in time are coming out to bite.

No one could predict what would happen to an individual household’s supply when the signal went off, because it would depend on the electrical installation inside the property. Some might see the heating working just as before; some might see no heating at all, while others might see the heating on all the time. Those who did have heating might well discover that their bills were much higher than before.

An electrician has managed to get the Economy 7 heating working in one flat by means of installing some timeswitches, but that’s no indication that other occupants would benefit from similar arrangements. We just don’t know enough about his system.

A modern meter is smart enough to be able to switch power to heating circuits on at offpeak times and off again at the end of offpeak periods. What might benefit from a timer in this situation is a water immersion heater, which for many households only needs to be on for a couple of hours a day.

65 replies

Rank 2
May 28, 2026

Well the neighbour upstairs had a smart meter put in yesterday, the engineer was sure it would fix the issue and said he’d checked everything - but the economy 7 still isn’t working, water heater and storage heaters still not getting any power. Not quite sure what we do next now. Nobody seems to have a handle on what the issue is

Firedog
Super User
Super User
May 28, 2026

… the economy 7 still isn’t working, water heater and storage heaters still not getting any power.
  

This isn’t an uncommon experience, and the solution is often quite simple if the meter is communicating properly as the engineer’s checks should have confirmed. It involves asking the supplier to send a command (called ECAUL) to the meter to configure the meter’s internal switch for the offpeak supply. The engineer can’t check this unless he happens to be on site in the middle of the night, and he can’t do the configuration himself. 

Noel | I have no official status; I'm just a volunteer who comes here to help other customers. My gear: Aclara SGM 1416-B Electricity-only E7 meter; Chameleon IHD3-PPMID-AAA | It may look as if I know what I’m talking about, but don’t let that fool you. |
Rank 2
May 28, 2026

I’ve passed that on to him, Firedog, Thankyou - he is going to try calling them again to ask about what you suggested, I know he has already been on to them to complain again this morning

Rank 2
May 28, 2026

He has just been on the phone to OVO and the person he spoke to had never heard of an ECAUL… his complaint handler will be calling him back tomorrow 

Firedog
Super User
Super User
May 28, 2026

He has just been on the phone to OVO and the person he spoke to had never heard of an ECAUL… his complaint handler will be calling him back tomorrow 
  

Sadly, I’m not surprised. It’s not the sort of thing front-line support staff normally come across. Neighbour will have to be quite firm and ask his complaints handler to ask the Smart team to send the ECAUL request to configure his ALCS calendar to match the timings he’s expecting (something like offpeak every day 00:00 - 07:00, or whatever they’re supposed to be according to his tariff and region. The times probably haven’t made it on to the online account yet, but he probably knows what they should be.

This isn’t the engineer’s fault, because he can neither check that the switch has been properly configured (unless he specifically asks the mothership’s back office) nor do it himself. Sometimes, meters like this are pre-configured for Economy 7, but again the timings may not be right for the specific case. There’s no reason to suppose that the same will happen to you, but if it does you know what to do.

We’d be grateful for feedback on how he got on ... 

Noel | I have no official status; I'm just a volunteer who comes here to help other customers. My gear: Aclara SGM 1416-B Electricity-only E7 meter; Chameleon IHD3-PPMID-AAA | It may look as if I know what I’m talking about, but don’t let that fool you. |
Abby_OVO
Community Manager
Community Manager
May 29, 2026

Hey ​@ConfusedJim 

 

Thanks for keeping us updated on that, I’m glad to see a couple of our members have already stopped by with the advice about ECAUL and you’ve already passed that on. Hopefully they have better luck getting that requested with their complaints handler.

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Rank 2
May 29, 2026

Today’s update from upstairs - the neighbour told the complaints handler everything you’d suggested, so she put him on hold for about 15 mins while she got on to the emergency smart meter team. They told her that the engineer had put in the original ECAUL when setting it up, but they could see that it hadn’t worked. They are now “checking whether a new activation code can be sent directly to the meter, or if another emergency visit is required”. 
 

He said that when the engineer had arrived he informed him that it was indeed down to the RTS frequency no longer working, and my neighbour pointed out my meter (identical to his) and the engineer said that he could see (I’m not entirely sure what he saw to know this) that it wasn’t working either. But there are about a dozen more of the same meters still in the utility room, and yet the engineer said all the other ones are working - ours are the only two that aren’t. 
 

So there we have it - they’ve promised to get back to him with a course of action by the end of the day but as that is about an hour away it seems that’s about as far as we’ll get this week.

Nukecad
Super User
Super User
May 29, 2026

Hi ​@ConfusedJim

I think it might help if you could post some photos of your meter and anything around it.

I realise this may not be possible if it's in a meter cupboard or meter room.

I said, Hey - Watts going on.
Firedog
Super User
Super User
May 31, 2026

… the engineer ... informed him that it was indeed down to the RTS frequency no longer working, and my neighbour pointed out my meter (identical to his) and the engineer said that he could see ... that it wasn’t working either.
  

That tells us a lot. There has been so much publicity about the RTS switch-off over the past two or three years I’m surprised there are some customers who haven’t heard about it. Depending on the type of electricity meter, it’s often possible to see whether the RTS signal is getting through or not. The positively last final cut-off has been set for 27 June 2026.

  

... the engineer had put in the original ECAUL when setting it up, but they could see that it hadn’t worked. 
   

Yes, this is a common scenario. As I said, I don’t think the attending engineer has the permissions required to alter the ‘ALCS Calendar’ in the meter. He can call up the smart team’s back office and ask them to do it - or you can ask Support to ask them to. It can only be done remotely, and it sometimes takes a couple of attempts to get the new settings to stick. Let’s hope for the best.

Noel | I have no official status; I'm just a volunteer who comes here to help other customers. My gear: Aclara SGM 1416-B Electricity-only E7 meter; Chameleon IHD3-PPMID-AAA | It may look as if I know what I’m talking about, but don’t let that fool you. |
Rank 2
May 31, 2026

OVO sent an emergency engineer out to my neighbour yesterday, he said the guy was very good and helpful, but unable to solve the problem. He tells me the engineer said the new smart meter box was working fine, but both he and his supervisors said it sounded like OVO “have not set up the tariff correctly on the new meter”. So it’s back on to the complaints line tomorrow for him!

 

Firedog, I’d vaguely heard about the switch off but from what I’d read I thought our meter wouldn’t be affected - what I’d read said to look out for a black transmitter box near your meter, which ours doesn’t have, and showed photos of the really old analogue meters, so I’d thought our meter, being digital, was too new to be affected by it. Seems that’s not the case! Thankyou for all your help though, really appreciate it and our neighbour does too, it’s really helped him knowing what to tell the complaints handler they need to do!