combi

  1. T

    Vokera combi boiler very rapid cycling

    I found a post on here with a similar problem and have been advised to start a new thread as this is for a different brand. This looks a very good site! We are having a big problem with hot water supply to taps and the shower, especially upstairs. Hot water will heat rapidly then go stone...
  2. B

    Worcester boiler buzz fading 37cdi

    Hi, got a 10yrs old WB greenstar 37cdi. Runs nicely but every few minutes has a loud buzz that fades in then back out, lasts for a few seconds and then fades out. Definitely not the pipe work or snagging. Can happen any time, not just upon fire up or shutting down. Any ideas? Thanks
  3. R

    Hive receiver wiring help - oil combi boiler

    Hi, I have moved to a house with a oil Combi boiler and a thermostat (Grant) which is on the wall in the kitchen. Can I replace this with my hive receiver do you know? I'm a joiner to trade so very limited ability with things like this although I replaced my old one but it was like for like...
  4. D

    Valve between outflow and return pipes

    There is a valve connected between the outflow and return pipes just under my combi boiler. What is this for and should it be open or closed?
  5. C

    Viessmann Vitodens 100-W Combi Boiler B1KC

    Hello all! I've just got a new Combi boiler installed and would like to clarify two things (I have heating off atm and DHW set to 50ºC (which is default). - While using hot tap water, display shows it goes to around 64ºC. Shouldn't it be around 50 as per setting? - In DHW, does it matter if...
  6. C

    Should I replace my (possibly 20 y/o) Ideal Mexico 2 boiler with a modern combi?

    The boiler is working fine but is an old conventional boiler, and what is quite annoying is that the central heating system has no 'y valve' so you can't have hot water without turning on the heating (in the summer we put the thermostat on minimum but it still comes on). I had some plumbing work...
  7. M

    Hive Wiring for Worcester green Star 28i

    Hi all, I'm hoping someone can help identify the wires under the combi boiler. There was once hive installed however the previous owner has taken the reciever and install a standard danfoss thermostat. This is how it has been left. 15543993042235156073894454745445 by Matt Bezant posted 4 Apr...
  8. R

    Any idea if this is some kind of tap

    Context is problems with shower. Starts warm, then goes cold and repeats. Have also noticed hot top also does this. I think the HW flow rate is too low. I thought at first maybe just crappy mains pressure, but noticed that hot water flow rate much lower than cold and so maybe boiler heat...
  9. D

    Ch works but no hot water. Valve and motor work potterton heat max 28he

    Hi all, I am working on a potterton heat max 28HE that has no hot water (hot tap runs cold but boiler fires up when the hot tap is on and hot water is sent to the valve) this boiler seems to be identical to the baxi deo tech? I have looked over many threads and had a convocation with a guy on...
  10. M

    Newly installed Combi/Megaflo and Immersion heaters

    I need some help! I have recently had a small extension to our 3 bed semi and with the work they have moved our boiler from the kitchen to the loft and as the water pressure upstairs was too low have installed a megaflop as well. I connected our smart metre earlier in the week and we are...
  11. S

    Hive dual channel receiver & with Baxi Platinum combi boiler

    Hi Can anyone help me with how to wire a hive dual channel receiver to a Baxi Platinum? I know it should be a single channel receiver but is it still possible!? See attached wiring diagram for the boiler and hive Thanks
  12. M

    TF1 compact filter with new Combi Boiler - necessary?

    Recently had a new Greenstar 30i installed, a TF1 compact was added to the system in a most inconvenient place. We did tell the installer not to put it there (because a shower is to go in that cupboard), but alas they 'forgot'. So I have since drained the system and removed the filter...
  13. D

    Wiring Drayton RTS8 Combo stat to Riva Combi

    The existing 3+E cable from the old Honeywell stat should be handy, even though I binned the stat itself. I think that stat fig. 5 and Riva fig. 6.15 are the relevant guides here.. Stat Neutral N (blue wire) to neutral N in the mains power supply block Stat Live L (red wire) to external...
  14. M

    Vokera Linea 28 Combi boiler issue

    New to this, looking for some advice... Combi boiler radiators (7 in total, upstairs/downstairs house) were not heating up some not at all. System always topped up with "inhibiter". Hot water great. So - all radiators removed and flushed clean. (Some black water, to grey to clear) - pipework...
  15. K

    Vokera Linea 28

    Anyone know what the reputation of this boiler is. Being offered this cheap. Need a simple reliable combi for 4 radiators.
  16. T

    Worcester Heatslave 12/14 going into lockout

    Hello, I have a Worcester Heatslave 12/14 combi oil boiler which will not run. We ran out of oil back in April this year and due to the hot weather and finances have only just got round to getting the tank filled. On first starting the boiler it goes into lockout, to be expected with no oil...
  17. A

    Adding UFH using zone 2 - Ideal Vogue with hive

    Ok I am a beginner so may not get the terminology right so apologies in advance(part of the battle with DIY is know what questions to ask(the other part is know who to ask)) but from reading other posts I think I am in the right place. So hope you can help me as the Title suggest I have and...
  18. B

    Vaillant ecotec 838 with Nest

    Hi all, Just wandering is the nest compatible with the vaillant ecotec 838 plus combi boiler? And if so, does anyone have an appropriate link with how the wiring should be undertaken. The boiler is a brand new install with no current thermostat installed. Any help and advice would be largely...
  19. cwhaley

    Boiler switched off and on

    I'm just wondering how well a Main Eco Combi Boiler (30) can cope with being switched on and off over a short amount of time. I grew up with a very old Glo-Worm boiler. It was dead reliable but we only had hot water in the evenings -- it was never on-demand, so as a kid/teen I never expected to...
  20. T

    Help needed

    Hi, I have a valiant eco tech plus 824 that has an issue. When I run the hot water, it runs hot for a minute then goes cold. The burner cuts out and won’t cut back in. If I run the hot tap on half, I get constant hot water. My engineer came out and was confused, rang valiant tech support and...
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