Economy 7 – not automatically heating water


Postby Andy_S » Wed Jul 30, 2008 6:25 pm

Hi.

I’ve recently been experiencing a problem with my Economy 7 hot water (immersion tank) heating. Basically, this is no longer turning on automatically when the electricity supply turns from 'day' rate to 'night' rate.

However, and this is what’s most confusing, if I flick the switch where the relevant heater is connected to the wall off and on again during 'night' hours, it starts heating straight away

Does anyone have any experience of this happening before? Any suggestions as to possible solutions would be greatly appreciated and please let me know if you need any more information. Many thanks!
Andy_S
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Postby ericmark » Thu Jul 31, 2008 12:42 am

Yes had this with old round time switches. I renewed the time switch but be careful to select on able to handle the current not a central heating one.
ericmark

Postby Andy_S » Thu Jul 31, 2008 7:19 pm

Do you mean something like the ones found on the uk-plumbing.com site, on the listing page for "Sangamo Round Pattern Time Switches Standard"

If so, I don’t seem to have one of these, just a meter (which switches from ‘day’ to ‘night’) and an immersion tank with two elements, each of which is hard wired into the wall with an on/off switch.

As described above, even when the switch for the Economy 7 element is on, it doesn’t heat the water overnight until the switch is turned off and on again.

Any further thoughts grately appreciated! Thanks again.
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Postby sparx » Thu Jul 31, 2008 10:10 pm

Hi sounds like wall sw. has poor connection or failing contact, your action in switching it on load makes contact temp. I would check connections & if tight replace sw.
regards SPARX
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Postby Andy_S » Fri Aug 01, 2008 3:54 pm

Hi sparx.

That sounds logical and I've actually just had the same suggestion from an electrician at work, so I'll have a look at the switch and go from there.

Many thanks!
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Postby Andy_S » Sun Aug 31, 2008 6:28 pm

Just to say (for the benefit of anyone else who has the same problem), that this seems to have worked perfectly. Many thanks again...
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