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Lightwave immersion heater switch on off-peak supply.

Sparkingchip
I am finishing off someone else’s job, there were controlled from a phone using Lightwave immersion heater switches on both the peak and off peak supplies that the other guy took out for some unknown reason, now they need to be reinstalled.


Apparently the off peak Lightwave switch was only supplied by the off peak CU, but I am told it worked.


I am weighing up the possibilities:
  • The switch has a rechargeable battery and works when the power is off.

  • The app stores the command and executes it when the switch is powered up overnight.

  • The switch doesn’t work, but the customer doesn’t realise this as he is not at home when the switch is supposed to turn the off peak immersion heater off.


I am thinking the switch needs a permanent supply.
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    I emailed the technical helpline, the switch doesn’t have a backup battery and the app doesn’t store instructions to execute them when power is restored. 

    So it seems the switch did not work properly, but the customer probably did not realise.


    Initally I reinstalled the off-peak switch with two supplies, but then realised the storage heaters have been removed and only the off-peak immersion was actually connected to the off-peak supply, so moved it to the peak side of the consumer unit.


    That leaves the customer in complete control of the timing and means he can take advantage of new tariffs such as those offered by Octopus that means he could heat his hot water during a period when he is paid to consume electricity.
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  • 0
    I emailed the technical helpline, the switch doesn’t have a backup battery and the app doesn’t store instructions to execute them when power is restored. 

    So it seems the switch did not work properly, but the customer probably did not realise.


    Initally I reinstalled the off-peak switch with two supplies, but then realised the storage heaters have been removed and only the off-peak immersion was actually connected to the off-peak supply, so moved it to the peak side of the consumer unit.


    That leaves the customer in complete control of the timing and means he can take advantage of new tariffs such as those offered by Octopus that means he could heat his hot water during a period when he is paid to consume electricity.
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