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Had time to evaluate, it has made a huge difference, despite it being time.ofnyear heating is on, it takes significantly less time to get hot water to our taps. I really think I'll make a fairly significant saving on water usage now this is done. On our kitchen tap, Without eco it takes around...

As @stem said, there was no wire between hot water LR and 230v out. I put that in place and it worked!

I have preheat mode! Thanks all.

Attachment called IAC is the photo of where the wiring is, so I need to remove the "installer access cover". I think I should manage that? All attachments here are for my specific boiler. I think I'd be able to do it so for clarification, if I want the system to ignore the hive it should look...

Ok thanks, how to I enable the link? Is it easy enough to do? Thanks by the way, you've been really helpful.

That's really helpful, thank you.

Seems my black (and earth) wires aren't connected to anything. Photo attached.

When HW is enabled on hive, it still doesn't preheat, and still displays ECO+clock

Yes, so it only switches between eco or Eco + clock. I think it's because the plumber wired into my dual channel hive, but the HW function on the hive doesnt switch boiler to preheat mode.

Hi, it doesn't do that, that is my original problem. If i press and hold, it shows "ECO" with a photo of a clock, then if i press and hold it again , it just says "ECO" without the clock.

https://photos.app.goo.gl/TBLkrn8peKp9znUX6 Should be visible here

It won't let me!

But my boiler won't let me use preheat mode. I have eco or eco with a clock picture. Why can I not set preheat

No Leaks, and the delay to hot water, plus installation of newer taps is whats causing increase in water usage. Running hot water for 20 secs at 9/l per min several times a day is a lot of water to use before it gets hot. I need to enable the preheat function on the boiler, I wondered how the...

Had a greenstar 32cdi compact fitted years ago, after my old tank system failed. I had hive heating and hot water installed for the old system, as it would heat the water. When I had my Worcester installed, I kept the hive heating, the fitter said it would just work with the thermostat and...