Smart meter/immersion heater issues

[Dartlec]

OK, the use of off-peak confused me slightly then - if you're not on an economy 7 or economy 10 tariff then there is no 'off peak' as it costs the same whenever it is used. The timer is being used just to limit the time the main (lower) immersion is on to keep running costs down from the sounds of it?

If that is the case then the smart meter is almost certainly a red herring as it would impact everything or nothing, from the description you've given.

Sounds much more likely to be the timer itself, or the cable between the timer and the immersion heater. If the timer, then putting a fused spur in instead would of course work, but without the timed control you currently have.

It should be easy (for the electrician) to check the timer output to see whether it is live when expected on the timer (when the light comes on).

Good luck clarifying things and finding a solution that gives you hot water back!

 

[Avo Mk8]

Looking at the circuit diagram of the Horstmann E7 Quartz timer, it seems the innovative connection of the neon indicator for 'off peak', means just because it's lit does not guarantee there's power on the off-peak Immersion terminal 5. Maybe the NO contact of the timeswitch has failed?

An electrician with test equipment should soon find out what's going on. Might be worth pointing out just because the neon is lit doesn't mean there's power to the immersion.

 

[Wilko]

The other thing is we haven't been on an Economy 7 tariff for the whole time I've lived here, so I don't really see why fitting a smart meter would disrupt anything in this way.

Hi - if you don’t need the off peak function, why not bypass the whole thing and get the hot water running. If you are happy with the service you are getting then that’s fine, but when I undertake to fix something I don’t leave till it’s working. Or you tell me to go .