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cwebster17
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March 22, 2023
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Immersion heater stopped working after smart meter installation

  • March 22, 2023
  • 26 replies
  • 3654 views

Hi,

I had a smart meter installed on Friday and since then my immersion heater has not been heating up overnight. I’m on an economy 7 tarrif and the meter installed is a 5 terminal meter. The meter shows two rates and both meter readings have changed so it appears to be recording energy use on both tarriffs. Nothing has been tripped and I’ve also tried resetting the immersion heater but still no hot water. The boost function still works though. 

Has anyone had a similar experience/know what a fix might be?

Thanks!

Best answer by Tim_OVO

Updated on 07/11/25 by Chris_OVO:

 

Hi @cwebster17 yep that fits with the update on our side, which is that the ALCS command request to update the meter was sent on 23/03 but failed with a status of ‘E21’ (which means no response from the device). There are various reasons this may have happened and we asked someone to re-try it today.

 

That worked, so this should now be sorted!

If your storage heaters or water heater aren’t coming on at the correct times following a smart meter installation then you’ll need to contact our Support Team who’ll look into what the problem is.

 

26 replies

Blastoise186
Super User
Blastoise186Super User
Super User
March 22, 2023

Hey @cwebster17 ,

Sounds like it just needs the schedules set up via SMETS Commands. Support can arrange that for you! :)

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cwebster17Author
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March 22, 2023

Hi @Blastoise186 

Thanks for your response! Do you know how long that might take and would an engineer need to visit?

Blastoise186
Super User
Blastoise186Super User
Super User
March 22, 2023

Once requested, it should be done within a couple of days remotely, no engineer visit needed.

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SteveBee
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March 22, 2023

Hi @cwebster17 - I’ve had similar, last week, when new smart meter fitted.  Still to fully resolve.

Fifth terminal feeds dedicated E7 bottom element in water heater cylinder (possibly same in your case).

@Tim_OVO kindly requested remote ALCS update but secondary contactor on fifth port/terminal still not activating (the update did activate the 2A load control relay, but nothing is connected to this).

Hopefully another try will get it back on track!

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cwebster17Author
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March 22, 2023

Hi @SteveBee 

Thanks for tagging me in your post, really helpful info as to understanding how the whole thing works. It seems like we’re having the exact same problem - hope they are both fixed soon! 

@Tim_OVO if I provide my meter serial number could you please request the same for my meter as to whether the ECAUL/ALCS schedule is configured correctly ?

Blastoise186
Super User
Blastoise186Super User
Super User
March 22, 2023

That might just be possible to do. Could you grab a photo of the meter and post it here? That usually makes things easier as one of us can extract the MSN from that.

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cwebster17Author
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March 22, 2023

Thanks @Blastoise186, here’s my meter 

 

Blastoise186
Super User
Blastoise186Super User
Super User
March 22, 2023

This message was posted by SkyNet Blastoise Bot, on behalf of Blastoise186

Image analysis complete! A Meter Serial Number was detected and extracted!

Identification method: MSN Barcode

Detected MSN: 21M0207735

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SteveBee
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March 22, 2023

Thanks @cwebster17, let me know how it goes.

Tim_OVO
OVO Staff
Tim_OVO
OVO Forum Legend
March 23, 2023

@cwebster17 I’ve shared your details in case the team are able to help via the forum. Normally we’d recommend doing this via our Support team but hopefully the team are able to help this way for now. 

 

@SteveBee I’ve just replied to your topic with an update as well!

Carbon neutral - we need a community to get there! My green tech: Aclara SGM 1411-B smart meter, Chameleon IHD6
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