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glow worm

Glowworm or glow-worm is the common name for various groups of insect larvae and adult larviform females that glow through bioluminescence. They include the European common glow-worm and other members of the Lampyridae, but bioluminescence also occurs in the families Elateridae, Phengodidae, and Rhagophthalmidae among beetles; as well as members of the genera Arachnocampa, Keroplatus, and Orfelia among keroplatid fungus gnats.

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  1. parboiled

    Re-pressurising brand new Glow worm boiler

    We have just bought a brand new Glow worm Betacom4 24K less than a month ago. The new boiler is already losing pressure, falling from 1.3 bars to 0.5 in a little over 4 weeks. The GS engineer set the boiler at 68, it's been fine, running great, noticed pressure fell slower at first but has...
  2. N

    Glow Worm Flexicom 30cx

    Hi all. Got the above combi which had an F25 (circulation) fault. Had new expansion vessell (was bad) then at advice of Glowworm a new diverter valve as hot water was OK but fault on heat. All has been perfect for a few weeks then back to F25. As before cutting power cures it. Always from cold...
    • nickyburnell
    • Thread
    • america flexicom glow glow worm usa worm
    • Replies: 0
    • Forum: USA
  3. G

    Problems with glow worm 60ff

    Hi all, got trouble with a glow worm 60ff, both lights flash, reset and boiler on, when I turn the dial to reset it goes through the three start up sequences, then back to both lights flashing, if. I immediately turn it back to reset it then goes through the start up again and the boiler light...
  4. R

    Glow worm ultra com 30 cxi preheat issue

    Hi, does anyone know how to turn the preheat off on a glowworm ultra com 30cxi? It’s the one with the 3 round buttons, I’ve tried the - part of the tap button but it just brings it to the water temp setting so totally confused on what to do. Not even sure how it started up - never had it before-...
  5. J

    Glow Worm Micron 120 No Switched Live (Boiler Help)

    Hi All, New to this so not sure if posting this questions is valid, but i have a boiler issue which has baffled me. I have a Glow Worm Micron 120 boiler and it recently decided to die all of a sudden. I have had issues with the PCB in the past i.e i resoldered some dry joints a year ago. Thus...
  6. M

    Glow Worm burner cycling on Pmax when trying to gas rate

    Hi I am gas safe registered, when commissioning glow worm Ultimate 3. Have put into p.01 to gas rate and set at Pmax, but burner keeps cycling on and off rather than running at full rate, so am getting incorrect gas rate, any thoughts?
  7. I

    Glow Worm Ultracom 30cxi - Hot Water misbehaving!

    Boiler was working fine but now whenever I take a shower the hot water fluctuates from hot to luke warm. Looking at the boiler display, I can see the flames come on to max and hear the boiler working and then go down to min/off after a few seconds and then back on repeatedly. I checked the...
  8. T

    Glow Worm 45/60CF gas valve

    Hi All, I am looking to see if I can find a compatible gas valve for my Glow Worm 45/60 boiler part number UK48RBB01 any help would be much apricated.
    • Tony1956
    • Thread
    • america gas gas valve glow glow worm usa valve worm
    • Replies: 3
    • Forum: USA
  9. J

    Glow worm Flexicom 30cx brief cutout

    Hi all, got the above boiler that was installed in the house back in 2009 before we moved in in 2017. The boiler works as it should, it heats up the hot water and the radiators fine and everything is balanced. however it has started to act rather strange with the heating on. The boiler will...
  10. K

    Glow worm Ultimate 35c low flow rate

    Hello, I have a glow wrom ultimate 35c combi boiler which has terrible flow rate. Flow rate used to be strong but one day around 2 weeks ago it just slowed to almost a dribble. To date i have replaced the flow rate sensor, the pressure sensor, I have replaced the springs inside the diverter...
  11. A

    Glow worm betacom 24c howl on DHW, advice needed

    Hi, looking for some advice/pointing in the right direction. We’ve got a glow worm betacom 24c combi boiler, installed by the last owners. Doing some research it seems as though they cheaped out. Having an issue where the boiler is making a loud groaning/ howling sound when running hot water...
  12. C

    [SOLVED]Pressure 0.0 bar - Glow Worm Home 15s

    Hi everyone, I'm the head tenant of a shared house in Dublin, which is heated with a Glow Worm Home 15s boiler. This boiler was working fine this winter, is usually set the heating temperature to 45 degrees. But today the weather was pretty warm so I lowered the temperature to 22 degrees for...
  13. K

    Glow Worm 38cxi slow startup

    Our Glow Worm 38cxi boiler is about 15 years old. When turning on the central heating in the morning, the boiler fires for a moment and the pump starts, then the green light goes off but the pump continues to circulate the water. The temperature of the water on the boilers digital display drops...
  14. D

    Glow worm Boiler making loud noise

    Hi my boilers only a year old and 3 times now a strange loud noise keeps happening (I’ll attach video) . Heating and hot water working fine . If I turn it on and off it goes away but if I leave it it carries on for hours. ( I know this because I thought it must have been my neighbores one night...
    • Danmuz
    • Thread
    • america boiler glow glow worm loud noise making noise usa worm
    • Replies: 6
    • Forum: USA
  15. B

    Glow Worm spacesaver pilot assembly

    Hello, I am looking on behalf of my installer for a pilot assembly for a spacesaver 60BR Mk11 GC 41-313-56 part no: 429788 any advice would be welcome bests Dave
  16. W

    Glow worm Ultracom 30 cxi query

    Hi all Homeowner with little understanding of boilers... Heating is working fine and hot water is working fine from the bathroom basin taps. Pressure is at 1.6. The issue is that from the bathroom bath taps and kitchen taps (which appear to be higher pressure), hot water runs for a bit but...
    • Waigo1
    • Thread
    • america glow glow worm query ultracom usa worm
    • Replies: 1
    • Forum: USA
  17. I

    URGENT Glow Worm Flexicom loop valve help

    Hi All, Yesterday I drained down my water system and when I went to re-pressure the sytem the fill loop valve is stuck and will not open. I have removed the handle grey handle and managed to use a spanner to turn it but still no joy. If I remove the silver hose and open other valve there...
  18. S

    Glow Worm boiler just always on!

    Hi Everyone I've got a quite old Glow Worm Ultimate 80FF. It recently had an issue with the control stat (lots of green corrosion on it which was causing it not to come on) and I fitted a new one and I'm back in business. Everything was fine for a few days and now it's just always on. We have...
  19. C

    OVERHEAT BUTTON- GLOW WORM ULTIMATE FF BOILER

    This is a long shot-( this post was originally sent to StevethePlumber but I havent heard back from him as yet) I have a glow worm ultimate ff boiler. Pilot light not lighting. There is power in the unit as it is glowing orange inside the box with the control knob. Anyway, on the self...
    • cleo
    • Thread
    • boiler button glow glow worm overheat ultimate worm
    • Replies: 2
    • Forum: Gas Engineers Forum
  20. C

    Glow worm combi boiler - HW is working, CH isn't coming on, Radiator icon is flashing?

    My heating isn't coming on, the boiler is working but the radiator icon is flashing. It is a new glow worm combi. How do I stop the radiator icon from flashing so the central heating starts? Thank you. Kind regards Craig
    • Craig Tipton
    • Thread
    • america boiler central heating system combi combi boiler coming flashing glow glow worm isn't radiator usa working worm
    • Replies: 6
    • Forum: USA
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