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30cxi

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  1. M

    Glowworm 30cxi leak

    Hi all, Couple similar but not same threads - my plumber is coming back (again) to try to sort the seemingly intermittent leak on my Glowworm 30cxi boiler but thought I’d do a bit more research myself! Boiler is 12 years old but was hoping to get 1-2 more years before replacing as only just...
  2. D

    Finally found leak in Glowworm ultracom 30cxi

    So I've had a leak in this boiler for approximately 6 months. I hired an engineer to resolve and he suggested replacing a large black valve (I forget the name). After having the valve replaced, the leak appeared again around a week later. I tried to monitor so I could identify where the water...
    • Digimon
    • Thread
    • 30cxi america found glowworm leak ultracom usa
    • Replies: 8
    • Forum: USA
  3. 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...
  4. gingalig

    Gloworm 30cxi, f1 fault

    Hi all, I attended a gloworm 30cxi running on lpg today. Changed the return pipe on the heat exchanger as the rubber connector had gone hard and was leaking all over the place. Boiler fired up ran for 20 secs on dhw then fan increased speed and it went out. Went through the ignition sequence a...
  5. G

    Glow worm ultracom 30cxi ignition problem

    Hi, I am new to the forum and as a new home owner have a rather basic understanding of central heating systems! We have a main house and separate annexe which are supplied by two separate thermostats (Drayton digistat 2) which both run off the glow worm boiler. Without warning our heating did...
    • Gemlew
    • Thread
    • 30cxi america glow glow worm ignition problem ultracom usa worm
    • Replies: 9
    • Forum: USA
  6. N

    Glow worm 30cxi no hot water

    Any ideas a Glow worm with intermittent hot water, heating works fine. Boiler showing F3 until resetting then works ok for a while then F3 again.
  7. P

    Glow Worm 30cxi will not switch heating on/off with timer

    Hello folks. I have a 12-year-old Glow Worm 30cxi combi powering hot water and central heating. The analogue timer clock packed up recently and would not fire up the central heating either. Assuming it to be a fault with the clock, I got a second hand replacement and fitted it. Clock keeps...
  8. J

    Glow worm ultracom 30cxi Combi boiler Fault.

    Hi guys. Wondered if anyone could shed some light on this. I have an ongoing problem with my ultracom 30cxi that was fitted about 7 years ago. (Wish I’d bought a worcester). I lose water pressure when the hot taps run. The boiler dumps the lot through the pressure relief valve. The...
  9. S

    ultracom 30cxi gas valve

    I have been to change a ultracom 30cxi gas valve today and have had trouble setting it up,i fired it up after fitting and co was off the scale, phoned glow-worm and was told to wind the throttle in all the way and the back out 11 times and then adjust maybe up to 15 times, to get the co2 up, I...
  10. woodsy

    Glowworm 30cxi

    Been out to above boiler, which is periodically blowing the 3amp fuse in the spur, nowt on the actual boiler. New fuse in and up the boiler fires and works good as gold for an hr, or two then bang again. Anybody come across this before and can give me a heads up ?
  11. M

    Glow-worm ultracom 30cxi

    I have a problem with an ultracom 30 cxi, boiler fires temp rises quickly, boiler goes off and cools quickly, fires up again and keeps repeating. This is happening on heating & hot water.
  12. S

    Glow Worm 30cxi - Main PCB blowing, any advice?

    Good Morning Everyone, I have a Glow Worm 30cxi Condensing Combi Boiler. Last week, the main pcb died. I got the board replaced (4000124180). Boiler came back on, happy days. I did notice that the water was nowhere near as hot as it should be and been advised the Plate to Plate Heat Exchanger...
  13. R

    Gloworm 30cxi Boiler Short Cycling & F12 Code

    Hoping someone can help. This boiler is really starting to annoy me now thankfully I have insurance on it but the engineers who come out have sometimes been clueless. Over the last few years it's had main Pcb replaced, new heat exchanger, fan unit and various other things. The last repair...
    • richardc1983
    • Thread
    • 30cxi about boiler burner code cycling oil other short sometimes
    • Replies: 1
    • Forum: Plumbing Jobs | The Job-board
  14. L

    Glowworm 30cxi f12 fault code?

    Hi. I'm currently working on repairing this boiler. What are the most common faults with f12 error code? When turning the boiler on it reads 0.0bar and I can hear the fan constantly running but nothing else the goes to f12. After a while it will then come off f12 and fire up. This...
  15. E

    Glow worm Ultracom 30cxi

    Hi, I have a Glow worm ultracom 30cxi boiler. The pump broke and we no HW or CH. A man came and tried to fix it by putting new pump in.. he then blew the pcb board or something and left us with HW but bo CH. Another man came a few days later and put in new pcb board. The HW amd CH was working...
  16. U

    Glow worm Ultracom 30cxi

    Hi, I have a Glow worm ultracom 30cxi boiler. The pump broke and we no HW or CH. A man came and tried to fix it by putting new pump in.. he then blew the pcb board or something and left us with HW but bo CH. Another man came a few days later and put in new pcb board. The HW amd CH was working...
  17. F

    Glow Worm Ultra come 30cxi ... various pressure issue

    I had a glow worm ultra come 30cxi fitted 3 years ago by calor gas and it runs from a outside gas tank. The last 6 months I have had pressure issues with it. When set at 1 to 1.2 bar when the heating comes on it can reach upto 3.4 bar, but when the heating switches off it can drop all the way...
  18. C

    Glow worm 30cxi F13 fault

    Hi all, had a customer on the phone with an F13 fault on a Glow worm 30cxi fault which is the PCB connection fault. Has anyone else come accross this? Thanks
  19. F

    Glow worm Ultracom 30cxi Plate Heat ex

    Hi Everyone, I'm replacing a plate heat ex for a glow worm 30 cxi tomorrow, I've just had a look at the boiler now and at first glance it seems I'd have to take out the burner assembly etc to do the plate heat ex swap as it's located right at the back. Is there an obvious easier way that I...
  20. R

    Glow worm 30cxi pain!!!

    Went to the job Thursday and changed the sani block (ie diverter) on a 30cxi as the old one was losing heat into the central heating. When it was all striped down there was a lot of muck in the plate to plate cleaned that too. Got it all back together lots of hot water turned off the tap and the...
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