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Hive on Worcester Greenstar Heatslave 18/25

Discussion in 'Plumbing and Central Heating' started by Kate Robertson, 27 Sep 2020.

  1. Kate Robertson

    Kate Robertson

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    Help! I am swapping out a boss therm thermostat for a hive on my Worcester Greenstar Heatslave 18/25. I have wired it all up, everything is talking to each other, the boiler is set to “on” for heating and water, the boiler is working for hot water but it just won’t come on for heating! Any ideas? Wiring pictures attached plus the picture we used to help us do the wiring.
     

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  3. CBW

    CBW

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    Your hive and boiler need permanent live and neutral. The blue wire might be a neutral (from your boiler), the common needs to be a live wire. How was it wired Before? Is it a combi boiler?
     
  4. Kate Robertson

    Kate Robertson

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    Thanks, we assumed the blue wire going into common was a live wire from the boiler, how can we check?

    the boss therm had a loop wire from L to LX, not sure if that means anything??
     
  5. CBW

    CBW

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    Yes the L to lx is live to common, so you would need to do the same on your hive. Only way you could check is by confirming at the boiler or test equipment.
     
  6. Kate Robertson

    Kate Robertson

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    So how do we do that on the hive? There isn’t an LX?
     
  7. CBW

    CBW

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    Link L to common, not too sure what your blue wire is for, let’s hope it’s not for your boiler power.
     
  8. Kate Robertson

    Kate Robertson

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    The cable from the boiler had two wires, blue went into 1 (common) and brown went into 3??
     
  9. Kate Robertson

    Kate Robertson

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    So if we add an extra cable in from L to 1 (common) would that work? As per attached?
     

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  11. CBW

    CBW

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    Yes Kate, it should, but just to confirm, remove the brown and blue from common and 3, and see if the boiler stays on, obviously turning the power off at the fused spur first, then back on and see if boiler stays on.
     
  12. Kate Robertson

    Kate Robertson

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    Ok, thanks. Kids just going to bed, once asleep I’ll turn the power off. I’ve just found this pic elsewhere, have I got the brown and blue wires the wrong way round?
     

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  13. CBW

    CBW

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    It’s possible yes, which colour went to L1, or Lx on the boss receiver?
     
  14. Kate Robertson

    Kate Robertson

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    Lx was brown
     
  15. Kate Robertson

    Kate Robertson

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    I’ve swapped them round and it’s still not working!
     
  16. CBW

    CBW

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    Try the link/loop wire then
     
  17. Kate Robertson

    Kate Robertson

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    I think it might be working!! Added the loop wire from L to 1!
     
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