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  1. R

    Single immersion cylinder not heating during Economy 7 off-peak times

    Thanks Hugh. It’s a single Heatrae Sadie Pullin 11” Gold Dot immersion heater connected to the top of the cylinder. From what I can find online it doesn’t seem like a dual element immersion? Yep, fuses as in fuse box. Don’t know whether it’s also worth mentioning that I live in a hard water...
  2. R

    Single immersion cylinder not heating during Economy 7 off-peak times

    Hi, further to my previous post... I previously had two wall switches, which was then converted into the Horstmann Electronic 7 timer with one switch. Also, there is a burn mark on one of the fuses for the Economy 7 set of fuses. All of my storage heaters have been working the whole time. I...
  3. R

    Single immersion cylinder not heating during Economy 7 off-peak times

    Hi, first time posting here. I’m on an Economy 7 tariff, but up until recently only used it to heat my storage heaters, but never used it to heat water in the cylinder overnight as I just use the electric shower whenever I need it. I had the boost timer to come on at 7pm for half an hour to...
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