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Viewing 9 posts - 1 through 9 (of 9 total)
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  • in reply to: Radiator Valve disassembly #50453
     crivvens says:

    crivvens
    Participant

    The same two trv’s have stuck again, valve open but otherwise rsponding normally. Reinsert batteries solved it.Probably time to open one up and break it!

    Lightwave Link (930) + 10x TRV (922) + Thermostat + Boiler Switch- London, UK
    in reply to: Radiator Valve disassembly #50263
     crivvens says:

    crivvens
    Participant

    This has occured to me twice on a couple of rtv’s, i remove and reinsert the batteries and it resolves it. I have yet to open up a unit.

    Lightwave Link (930) + 10x TRV (922) + Thermostat + Boiler Switch- London, UK
    in reply to: Anyone using "Call for Heat" #49657
     crivvens says:

    crivvens
    Participant

    Hello ixido, As i understand the Link+ does not yet support call for heat. I have the older Lightwave Link (930) and confighte it via the web manager https://manager.lightwaverf.com/
    I have both Links and fell back to the old one around May 2018 to get my setup working – have not played with the Link+ since.

    Lightwave Link (930) + 10x TRV (922) + Thermostat + Boiler Switch- London, UK
    in reply to: Anyone using "Call for Heat" #49616
     crivvens says:

    crivvens
    Participant

    Hello Emrys, Thanks for the reply. Glad its not just me.

    My system/call for heat is working most of the time but still requires continuous watching and ocasional intervension.
    My problem was potentially lots of things needed heat at 17:30 and a clash made the system think the boiler was on when the command was lost.
    Thinking that the boiler was on it would not send the ON again until after it send the an OFF command (usually arround 23:30). I could see via the UDP packets failing to ACK and retrying but no second attempt to ON. Fixed by moving the thermostat within a few feet og the Link, so communications were 100%.

    To get call to heat working do not touch thermostat settings ever again, delete call for heat group and re-add it.

    I also note that a valve can go to 10% which causes the boiler to run, but I suspect the plunger does not move enough to actually let hot water run.
    However it never goes to 20% so the boiler stays on until the sun warms the room. Power reset resolves also.

    TRV plunger gets stuck on or off but still reports temperature battery posution ok. Power reset needed.

    If I want to force boiler OFF/ON via web I move thermostat temp to 5C or 28C and SET it (numbers help my logging) next TRV event will resume normal opperation. This appears not to change thermostat config or upset CFH.

    I have considered doing my own software but keep putting it off (RPi with Python or PHP)

    I use Energizer ultimate lithium batteries which i change <2.5 volts as below that they fail to move plunger but still report in. They last 3-4 months.

    think thats about it

    Lightwave Link (930) + 10x TRV (922) + Thermostat + Boiler Switch- London, UK
    in reply to: TRV's not firing boiler #25564
     crivvens says:

    crivvens
    Participant

    I have 10x LW922 TRVs, Thermostat, boiler switch, and Link 1 which I control via the web page ( have given up on phone apps for simplicity)
    7 of the TRV are set up to call for heat and all is working well at the moment.
    Stop touching the thermostat configuration.
    Delete the call for heat configuration add the call for heat configuration.
    The thermostat should switch between 40C and 0C depending on the call for heat does the web page show that?

    In my setup if the thermostat web shows on/off the boiler always follows.
    Initially i had the thermostat located next to the boulde switch next to the boiler wiring.

    However i had severe issues with call for heat not working as expected – all tvr had to be off for the boiler to switch off and if one tvr on was “missed” additional trv on would not be actioned (as system thought boiler should be on after the first request and ignord further requests until all off)
    I resolved this by moving the thermostat close to the link 1

    I log the broad/multicasts UDP packets from the link 1 which detail the temperature /output of the trvs.

    Initially i had only 3 trvs which i used upstairs to stop heating empty bedrooms – this worked fine so went the whole hog which has taken ages to settle.

    Hope this helps

    Lightwave Link (930) + 10x TRV (922) + Thermostat + Boiler Switch- London, UK
    in reply to: Anyone using "Call for Heat" #25417
     crivvens says:

    crivvens
    Participant

    Getting cold again and same issue has reappeared. Anyone using call for heat?

    Lightwave Link (930) + 10x TRV (922) + Thermostat + Boiler Switch- London, UK
    in reply to: Solar Immersion Controller… Can I bypass? #25337
     crivvens says:

    crivvens
    Participant

    I can heat my water with gas so not a direct comparrison. I also use a solarimmersion.co.uk unit to use up any surplus power from my solar panels. The unit messes with the shape of the waveform into the immersion heater so if only 456 W are surplus it only feeds 456 W into the heater element.
    It is not damaged if the load suddenly dissapears e.g. when thermostat cuts in. You would need to use a seperate relay powered from your lightwave relay to switch the element between mains and the solar unit output.

    Lightwave Link (930) + 10x TRV (922) + Thermostat + Boiler Switch- London, UK
    in reply to: Anyone using "Call for Heat" #25321
     crivvens says:

    crivvens
    Participant

    I have been running my system for about a month. Regularly it will not switch on for entire evening (17:30-23:30) but runs ok next morning.
    I’m logging all the LAN broadcasts and hoping for a clue.

    Lightwave Link (930) + 10x TRV (922) + Thermostat + Boiler Switch- London, UK
    in reply to: LightWave Link (930) + TRV (922) #19042
     crivvens says:

    crivvens
    Participant

    I have recently purchased these and are experimenting with them. Currently I am logging the all 1s broadcast to a MySQL database and trying to figure out how they work. Documentation is poor and so is the API. My plan is to incorporate them into my current heating system as the time plans will stop me hearing the whole house.
    I have a few questions and wonder if this is the best place to ask?
    1) When I started the TRV regularly reported “mode: run” but now seem to be stuck in “mode: man” – what’s this about?
    2) What the “prof” for it seems to have started about 4 and is now at 7
    3) Why do the valves switch off at 05:45 and on at 06:00? The are set to a temperature that they should be 100% on during the night waiting for the boiler to fire up.
    4) Where is everything stored on the server, on the Link on the TRV?

    I am also logging all the IP traffic to the link with an eye to understanding the protocol.

    Lightwave Link (930) + 10x TRV (922) + Thermostat + Boiler Switch- London, UK
Viewing 9 posts - 1 through 9 (of 9 total)