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  • #1795423
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    bobbyboy
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    Joined: 29 Apr 2005
    Location: Stirling, Scotland and Indre (36)
    Total posts: 16

    I have a wee problem with my Economy 7 electricity. Beside my fuse box is a switch box that should engage overnight automatically to heat the water tank. This has stopped working. I have to override the switch and heat the tank during the day. Can anyone tell me if this is an EDF problem that they must fix or can I do the work myself and if so, where can I get a replacement switch box? My problem is that if it’s an EDF issue, we’re only out at the house a couple of times a year and then it’s only for a few weeks at a time. From what I’ve read about EDF customer service I’m unlikely to get them to call at a time when I’m there. The switch box has a power circuit from the fuse box and the wiring for the immersion comes from the fuse box and out to the immersion. There is no time clock visible. Any advise would be much appreciated.


    Growing old is mandatory; growing up is optional

    #1795433
    badger
    badger
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    Joined: 04 Dec 2008
    Location: Near Vire (14)
    Total posts: 1408

    Can you give more information? Do you have an electronic/digital meter, or an old mechanical/spinning wheel one? Can you see anything like this:

    If there’s been lightning around then it’s quite likely that the contactor (as picture) has failed, & I’ve known digital meters to to stop reacting to the “heures creuse” signal that switchs on your 8 hours (not 7) of cheap rate.

    If you can post a picture of your set up it might help to get a more accurate answer.

    All in all though, if you occupy the house for limited periods you are probably not gaining by having the cheap rate power. You pay a higher standing charge to have it, & pay a higher rate for daytime units. It might be simpler/cheaper to just keep your water heater switched on when you are at the house.


    Jonathan Badger - St Germain de Tallevende 14500 http://www.badgerlx.fr

    #1795435
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    mikej
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    Joined: 21 Jun 2011
    Location: Dordogne sometimes and Kent the rest
    Total posts: 5287

    When we are in residence we have a timed circuit on our immersion that switch’s on for five hours overnight, not economy, 200L tank, at least three showers a day and have never ran out of hot water yet, seem the advice on here match’s real time.

    Mike


    WFIPFLL

    #1795436
    robertarthur
    robertarthur
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    Joined: 29 Nov 2010
    Location: Nièvre (58)
    Total posts: 2157

    If your wiring is something like this with an old external “relais de découplage” you should measure zero volt across the secondary side (switch closed) of this “EDF relay” during the “heures creuses” and 230 volt during the “heures pleines ” (switch open). Same measurement possible with the digital Sagem meters, contacts C1 and C2 under the lower cover, left side. There you’ll also find an extra protection for this so called fil-pilote signal, a little fuse. Don”t ever remove the top cover, the EDF / ERDF / ENEDIS will not appreciate it. If measurement here OK, then something wrong with your wiring or the contacteur jour/nuit. Perhaps an open relay coil inside. Easy to measure with a multimeter, should me somewhere around 3200 Ohm, but please switch off the main switch.

    And sometimes there is something wrong at EDF’s side.


    RA

    • This reply was modified 22 Sep 2017 23:27 by  robertarthur.
    #1795438
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    bobbyboy
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    Joined: 29 Apr 2005
    Location: Stirling, Scotland and Indre (36)
    Total posts: 16

    Thank you all for your responses. I’ve tried to post a picture of the switch etc but it won’t let me. From what you’re saying, I think the solution is to switch to a standard tariff , and introduce a time switch into the immersion heater circuit. I can set the switch to manual override to save rewiring.

    :good:


    Growing old is mandatory; growing up is optional

    #1795465
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    Chanceux
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    Joined: 17 Mar 2010
    Location: Picardie
    Total posts: 13130

    If you are not on a HP/HC abonnement and unless you have storage heaters it will be costing you dear, then there is no financial advantage to having a timer for the ballon to heat at night.

    However if you are close to the maximum current of your abonnement then having it heat at night when there are not other electrical loads like a cooker, kettle etc will avoid potentially tripping the ERDF disjoncteur.


    #1795468
    robertarthur
    robertarthur
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    Joined: 29 Nov 2010
    Location: Nièvre (58)
    Total posts: 2157

    Sometimes it helps to tighten the screws of the relay coil (A1 and A2) of the contacteur jour/nuit (left). You never know when you might get a stroke of luck.


    RA

    #1795470
    vic evans
    vic evans
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    Joined: 25 Apr 2015
    Location: Brittany 29
    Total posts: 4066

    Sometimes it helps to tighten the screws of the relay coil (A1 and A2) of the contacteur jour/nuit (left). You never know when you might get a stroke of luck.

    <hr />

    RA

    Wouldn’t shorting out the meter switch terminals with a piece of (insulated) wire  indicate if  the relay is working & if it is indicate a fault with the voltage free meter contacts or associated wiring?


    The power of accurate observation is commonly called cynicism by those who have not got it.

    #1795473
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    Chanceux
    Participant
    Joined: 17 Mar 2010
    Location: Picardie
    Total posts: 13130

    After 12 years of putting up with the huge “Kerchunk” that my contacteur tetrapoliare and HP/HC made I became aware that the buzzing noise that I had always thought was made by the ERDF thermal breaker when it was carrying the night-time 30 amp loading was in fact coming from the contacteur tetrapoliare for the storage heaters.

    On checking I found exactly the fault Martin mentions, one terminal I had presumably not tightened enough all those years ago.

    Shorting out the contacts is something that I commonly do to faultfind but where 230vac is concerned I never suggest it on a forum where I dont know the competence of the person asking or indeed of anyone reading.


    #1795475
    robertarthur
    robertarthur
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    Joined: 29 Nov 2010
    Location: Nièvre (58)
    Total posts: 2157

    For some time already I prefer multimeters to do testing, safer, and probably my first meter will outlive all the digital stuff that I’ve bought. If you take care with the switch settings….And even the digital multimeters are dirt cheap these days, no excuse for testing with fingers (I’ve seen a French electrician doing that….) or a piece of wire.


    RA

    #1795480
    vic evans
    vic evans
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    Joined: 25 Apr 2015
    Location: Brittany 29
    Total posts: 4066

    Shorting out the contacts is something that I commonly do to faultfind but where 230vac is concerned I never suggest it on a forum where I dont know the competence of the person asking or indeed of anyone reading.

    Which is  exactly why I posed it as a question.  :wacko:

     

     


    The power of accurate observation is commonly called cynicism by those who have not got it.

    #1795520
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    mikej
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    Joined: 21 Jun 2011
    Location: Dordogne sometimes and Kent the rest
    Total posts: 5287

    Sometimes it helps to tighten the screws of the relay coil (A1 and A2) of the contacteur jour/nuit (left). You never know when you might get a stroke of luck.

    <hr />

    RA

    What surprised me was the 3/4 turn I got on the terminal screws when I acquired the correct terminal screwdriver instead of using a PZK/Phillips, I think its called a VDE.

    Mike


    WFIPFLL

    • This reply was modified 24 Sep 2017 00:45 by  mikej.
    #1795529
    le-dolly
    le-dolly
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    Joined: 16 Nov 2009
    Location: La Souterraine-23 Depuis sept 2005
    Total posts: 1230

    I think its called a VDE

     

    I think that you will find that VDE refers to, and I quote, “The independent and neutral VDE Testing and Certification Institute is a national and internationally accredited institution in the field of testing and certification of electrotechnical devices”.

    The screwdriver that you lean to is known as  a PZ/SL or a Modulo.


    Le-Dolly ( . )( . ) http://www.pink-electrique.fr

French Electrical & Other Building Issues
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