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Honeywell st699 to Hive issue

Discussion in 'Plumbing and Central Heating' started by Dazed and Confused, 27 Nov 2021.

  1. Dazed and Confused

    Dazed and Confused

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    Good afternoon,

    I had a honeywell st699 which I've just swapped out for a Hive.

    My issue is that the heating doesn't seem to want to work unless the hot water is scheduled for the same time??

    I've used the same wiring diagram as attached.

    Any help would be much appreciated. Screenshot_20211127-153115_Samsung Internet.jpg
     
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  3. DP

    DP

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    What have you done with the wires that went to 6 and 7
     
  4. CBW

    CBW

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    Have you checked your 3 port valve? I assume it worked ok before swapping, or did you have the same issue?
     
  5. Dazed and Confused

    Dazed and Confused

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    Hi, thanks for the reply. It worked prior to the swap...but now doesn't seem to kick in when just the heating is selected.

    If I select heating only, the valve doesn't seem to open nor the pump kick in.

    The water works fine independently and the heating comes on if HW is selected at the same time
     
  6. Dazed and Confused

    Dazed and Confused

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    Hi DP.....6 Honeywell was moved to 3 Hive and 7 was moved to 1 Hive
     
  7. ianmcd

    ianmcd

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    what did you do with the old room thermostat ? you have to link it out
     
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  8. Dazed and Confused

    Dazed and Confused

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    There was no room stat installed when we moved in (We're only in the property about 5 minths)
     
  9. ianmcd

    ianmcd

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    your wiring is correct if you actually did follow your own diagram, go into settings and make sure the hive is set to fully pumped, it might be set to gravity hot water , which would do what you describe
     
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  11. Dazed and Confused

    Dazed and Confused

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    Hi, the system is set to fully pumped as standard (green light). I can change the setting to gravity fed (blue light) but as I have a pump and 3 way diverter valve, I'm assuming that fully pumped is correct.

    If I swap terminals 3 & 4 on the hive, the CH will operate independently, but I just get the reverse problem where the HW won't boost/run if the CH isn't running....switch o the boost for example and the pump or boiler do not switch on.
     
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  12. ianmcd

    ianmcd

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    yes fully pumped is the correct setting for your system

    by doing this the heating shouldnt come on , you have done something wrong, do you have a wiring center ? post a pic of inside that, and totally forget wire colours they mean absolutely nothing in a heating system
     
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  13. CBW

    CBW

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    Post a photo of the Hive wiring as well
     
  14. Dazed and Confused

    Dazed and Confused

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    Hi, I'll post both pics, but the wring centre is messy at best so I've listed the connections below to hopefully help. The connections are listed from top to bottom in the photo. I.e. the top terminal in the wring centre is 1 and the bottom is 8.

    1:
    Brown to Hive Live
    Brown from Live switched fused spur (3Amp)
    Black...runs under floor I,m assuming to Boiler?

    2:
    Neutral from supply
    Blue to Neutral terminal Hive
    Blue from Pump
    Blue from switched valve

    3:
    Earth from Supply
    Earth to boiler?
    Earth to Pump
    Earth to switched valve

    4:
    Black to terminal 4 Hive
    White to valve

    5: unused

    6:
    Red to terminal 3 Hive
    green/yellow to HW cylinder stat

    7:
    Blue to terminal 1 Hive
    Grey to valve
    Brown to HW cylinder stat

    8:
    Brown to Pump
    Orange to valve
    Blue HW cylinder stat
    RED TO BOILER

    Hopefully this makes sense
     

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    Last edited: 28 Nov 2021
  15. Ihavenojob

    Ihavenojob

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    There may not be a hot water satisfied wire from the cylinder stat as the old programmer had a permanent lives (8 & 5).
    Scrub that, just read post above.
     
  16. Dazed and Confused

    Dazed and Confused

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    How do I remedy that?
     
  17. Ihavenojob

    Ihavenojob

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    The cylinder stat satisfied (N/O) connection should be linked to the grey on the diverter valve and the H/W off (1) on the hive, but reading your post #12 it seems that is already the case. I am assuming you have a diverter valve with 5 wires.
     
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