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  1. Replies
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    Just fit it in another zone that doesn't...

    Just fit it in another zone that doesn't currently have a remote sensor ? :)

    My living room DTS92 has started rebooting when "bumped" by my 3 year old so I think I'll have to do the same thing to...
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    Sounds like an incompatibility or problem with...

    Sounds like an incompatibility or problem with the valve bodies on that top floor.

    Forget about wireless comms for the moment - try turning the temperature setting on the HR92 itself to a high...
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    If you open up the case and carefully bend the...

    If you open up the case and carefully bend the tabs holding the PCB to the sides you can pop out the PCB. You'll find the battery contacts contact copper pads on the rear of the PCB and that the...
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    If you have the new WiFi model of controller then...

    If you have the new WiFi model of controller then you can simply choose to bind a new temperature sensor for the zone and it will replace the old one without needing to delete the zone or touch any...
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    Hmm, I think you're a little confused on a few...

    Hmm, I think you're a little confused on a few points.

    1) Comms outages don't cause the bindings between devices to be lost. Rebinding them only has a placebo effect, so you're wasting your time...
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    Just timed one of mine and it takes about 30...

    Just timed one of mine and it takes about 30 seconds to go from fully off to fully on, so a full minute does seem a bit slow, but not exceptionally slow.

    If you temporarily swap that HR92 with...
  7. We're S-Plan as well however I have 3x BDR91 -...

    We're S-Plan as well however I have 3x BDR91 - hot water and heating zone valve relays and a boiler relay, so I do get the cycle time adjustments. (As well as hot water overrun)
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    Anyone know whether Lightwave also supports the...

    Anyone know whether Lightwave also supports the Honeywell wall thermostats like the DTS92, or whether it's only the radiator controllers like HR92's ? Can't find anything one way or the other on this...
  9. Unfortunately I have no experience with the...

    Unfortunately I have no experience with the HCC80R or underfloor heating, so I don't know the answer to that question.

    What I do know is that when you use a boiler control relay with TPI if the...
  10. Replies
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    Interesting! I must look and see what the...

    Interesting! I must look and see what the controller side of Lightwave is like compared to the Evotouch controller....
  11. I don't think Evohome is designed for controlling...

    I don't think Evohome is designed for controlling a heat pump system, so you are probably trying to hammer a round peg into a square hole.

    The problem with trying to set the minimum on time to 10...
  12. Replies
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    How is this being accomplished ? Is lightwave...

    How is this being accomplished ? Is lightwave talking the proprietary Rameses II protocol directly to the HR92's using an 868Mhz radio, or are they integrating with Honeywell's API via an Evohome...
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    When you bind HR92's to a zone you must always...

    When you bind HR92's to a zone you must always bind every HR92 in the zone in the same binding process.

    If you bind one HR92 and complete the binding process then go back and bind a second HR92...
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    What you describe is a "single room zone" - one...

    What you describe is a "single room zone" - one nominated temperature sensor in the zone controls all radiators, whether it be a wall sensor or the first HR92 bound, with the other HR92's acting as...
  15. The cycles per hour setting controls the length...

    The cycles per hour setting controls the length of the TPI cycle for the boiler relay. (And heating zone relays if you have any)

    12 times an hour means a 5 minute cycle, 6 times an hour (default)...
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    Sounds like phantom override to me. Lets pretend...

    Sounds like phantom override to me. Lets pretend you had a zone that was 5C overnight, and was scheduled to be 20C at 6am, and that optimal start was enabled. Lets also pretend that optimal start...
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    From what I can see while Resideo might be a...

    From what I can see while Resideo might be a separate company now all the branding of Evohome is still Honeywell.

    Almost as if Honeywell have retained the rights to the product but contracted out...
  18. Valve position on the HR92 is simply a percentage...

    Valve position on the HR92 is simply a percentage of total pin travel. 0% means pushed hard down and 100% means lifted right up. Note that the actual position of the pin for a given percentage will...
  19. Weather compensation will set a cap on the...

    Weather compensation will set a cap on the maximum possible flow temperature when the Evohome system calls for 100% heat, such as when any zone is more than 1.5C below the set point.

    However with...
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    I've seen both scenarios - it just depends on...

    I've seen both scenarios - it just depends on which comms messages were lost - heat demand from HR92's to controller, or heat demand from controller to BDR91.

    I'm not quite sure what you mean by...
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    How long did you wait ? It will take up to 4 1/2...

    How long did you wait ? It will take up to 4 1/2 minutes for the HR92 to adjust after using a phone app override....

    Also the phone app itself (and/or the web API it calls) are not super reliable,...
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    I doubt whether HR92's are "rated" for use in a...

    I doubt whether HR92's are "rated" for use in a bathroom either - they're certainly not hermetically sealed, with significant gaps around the joins and operating them with wet hands could lead to...
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    Up to about 5 minutes delay when using heating...

    Up to about 5 minutes delay when using heating off is normal behaviour. There is a delay of up to around 4 1/2 minutes from when the controller sends set point changes out to the HR92's until they...
  24. I recommend reading up on TPI or "Time...

    I recommend reading up on TPI or "Time Proportional Integral" controls - your expectation of how it should be working is a little naive and/or outdated. The behaviour you seem to be expecting is...
  25. Replies
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    If there is no heat demand the boiler relay will...

    If there is no heat demand the boiler relay will remain off continuously. If there is 100% heat demand the boiler relay will be on continously. In either case the cycle time is not applicable.

    If...
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