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Immersion heater - economy 7 timer wiring

Former Community Member
Former Community Member
Hello,


I have a honeywell st6400c controller and an immersion heater. 

My heater has 2 switches, off and on peak. My concern is that the heating works only with both switches on. Even if its set to trigger at off peak time only, which it does, both switches light up and if I switch off the onpeak one, the heating stops even tho the offpeak is still lit (testing this at off peak hours ofc). Is this correct ? does this not use much more electricity? I was monitoring this and Im sure it goes against the "night" hours, but my worry is that it uses much more power than it should.

Thank you for your advice

Tom
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  • Former Community Member
    0 Former Community Member
    Hi guys,


    thank you all very much for your response, although half of it doesn't mean much to me as I'm, well, without any knowledge on this topic.

    I'm not even sure now whether it's an immersion heater (as I have emailed honeywell as well and they said they don't use their controllers for immersion heaters, what means im most likely wrong)


    I have figured out it's gonna be easier for you if I add some pictures to the topic so you don't waste your  time on me too much.

    Please see attached. I now know, they are separately connected to the top and bottom of the tank, which I haven't checked before (apologies). I thought I could read it off the tank what sort of a heater this is but can't figure it out..(the agency nor landlady are not any good which is annoying and weird at the same time). As you can see, the onpeak is wired into the bottom, off peak is wired into the top. As I've mentioned before, the off peak, even tho it gets lit as per timers settings, does nothing if the onpeak is not switched on. (I have tested it tonight) I hope this gives you more insight - i'm definitely learning from your answers. 

    I should have mentioned that I have switched electricity supplier recently. (this was finished less than a week ago)

    Also, I'm not entirely sure how to set the controller against the timer in the utility room as well, it just rolls . The offpeak hours seem to be running until about 7:15 in the morning what strikes me as a very odd time. 

    Thank you

    Kind regards

    Tom

    c5c4225e6a6a65a0bab09e93c6b1176d-original-image3.jpg
Reply
  • Former Community Member
    0 Former Community Member
    Hi guys,


    thank you all very much for your response, although half of it doesn't mean much to me as I'm, well, without any knowledge on this topic.

    I'm not even sure now whether it's an immersion heater (as I have emailed honeywell as well and they said they don't use their controllers for immersion heaters, what means im most likely wrong)


    I have figured out it's gonna be easier for you if I add some pictures to the topic so you don't waste your  time on me too much.

    Please see attached. I now know, they are separately connected to the top and bottom of the tank, which I haven't checked before (apologies). I thought I could read it off the tank what sort of a heater this is but can't figure it out..(the agency nor landlady are not any good which is annoying and weird at the same time). As you can see, the onpeak is wired into the bottom, off peak is wired into the top. As I've mentioned before, the off peak, even tho it gets lit as per timers settings, does nothing if the onpeak is not switched on. (I have tested it tonight) I hope this gives you more insight - i'm definitely learning from your answers. 

    I should have mentioned that I have switched electricity supplier recently. (this was finished less than a week ago)

    Also, I'm not entirely sure how to set the controller against the timer in the utility room as well, it just rolls . The offpeak hours seem to be running until about 7:15 in the morning what strikes me as a very odd time. 

    Thank you

    Kind regards

    Tom

    c5c4225e6a6a65a0bab09e93c6b1176d-original-image3.jpg
Children
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