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combi boiler

  1. L

    Noritz NRCB Combination Boilers

    A couple of main options from Noritz. NRCB199DV and NRCB180DV.
  2. H

    Worcester bosh combi boiler strange pressure problem

    ive been having problems with my boiler banging at night so ive had all my radiators changed and on Saturday had M C 3+ cleaner through the system and sentinel x100 inhibitor put in the boiler was fine that night Sunday night about 3 in the morning the boiler banged then i could hear a woosh of...
  3. NODDYNODSVILLE

    Costing to covert to a Combi boiler

    Goood afternoon all. My conventional boiler is over 15 years old and I want to convert to a combi boiler. My system is a typical wet system. 2 small header tanks in loft conversion loft. Hot water cylinder with electric immersion on top, with shower feed coming off the pipe, using a Surrey...
  4. W

    Vokera Combi boiler replacement

    My 30 year old good servant a Combi Vokera Flowmatic 20-80 RS has finally given up RIP. Think Vokera don't make them like they used to so not necessarily like for like replacement. Ground floor flat with 5 large radiators and 2 small radiators. As this Combi has served me well I assume it was...
  5. A

    Combi Boiler heats radiators when hot water only is selected.

    My combi boiler has started heating the radiators when I select hot water only. Any ideas ? The system has been in for maybe 10 years.
  6. A

    Combi boiler making a whooshing noise

    Hello, Today a technician came round to check a radiator that wasn't working and turned off all the radiators which fixed the issue. Now the combi boiler is making a continuous noise that seems to be coming from the pipes underneath it. I've turned the boiler off and it's still making the...
  7. gcleve

    Set Worcester combi boiler to circulate without heat.

    Hi there - I have a Worcester Greenstar 25Si combi boiler running our heating rads. I've recently added a small tank with a heating element powerd by solar into the rads circuit. It's producing good heat, but I need a circulation pump to be on to move the heat around the system. Ideally I'd like...
  8. R

    New build heating engineer needs pointing in the right direction.

    Hi, I have a vaillant ecotec plus boiler (pre 2012 model) that is giving me hot water issues. It points towards a hot water heat exchanger issue or diverter valve, but I have replaced the diverter valve (old one seemed to still operate as it should as well) so it would seem that wasn't the issue...
  9. P

    Combi boiler issue or Shower?

    Hi Yesterday my shower in the bathroom started to run cold. It started fine but then ran cold...then got warm again before running cold again. This continued and then just ran cold. Other taps ran hot as usual so thought it could be the shower/cartridge. Instead of fiddling with manufacturers...
  10. G

    Warm flow combi boiler /No hot water

    Need help please... My Warmflow oil fired combi boiler will not supply hot water to my domestic taps but the central heating works fine. This is a dual pump system. I have linked out the connections on the boiler stat which causes the hot water pump and system to work and able to get very hot...
  11. K

    URGENT Worcester Heatslave 15/19 Oil Combi Boiler Pressure

    My boiler pressure gauge is at zero so the boiler is not firing up. I thought I heard a small water leak in the wall near the boiler the other night, just before this happened, but the leak has now stopped. I have been reading other posts to try to find a solution and I've hunted everywhere...
  12. U

    Installers with experience of Hybrid Solar Thermal / ASHP and Combi Boiler in Sussex Area

    Hi, I'm looking for someone to help specify, and possible install hybrid system. Initially the bungalow was setup for all low temp (underfloor heating and Fan assist heating rads), but couldn't afford ASHP at the time, so fitted a Vaillant Ecotec Plus 937 Combi as the heat source. Now looking to...
  13. S

    Shower hot water and flowrate issue (combi boiler)

    Hi, I’m trying to get to the bottom of some issues I’m having in my home (moved here 4 months ago) with the combi boiler and particularly the shower – any help would be greatly appreciated! I’ll explain the issue and the steps I’ve taken so far to try and resolve/understand it. The issue -...
  14. J

    URGENT Ignition issue Main Eco 30 Combi boiler

    Hi All, I have a Main Eco 30 Combi boiler I was fitted about 7 years ago, the whole pipe work is new and radiators. I have so far replaced the electrodes since it was old and bent (it was working but I wanted to avoid it failing), the heat exchanger was hoovered and the seal was replaced, the...
  15. Ryooo

    Heatslave 25/32 No HW

    Hi guys just installed an oil 25/32 external Worcester Bosch Heatslave External boiler. I can't get hot water. Central heating is fine. Comfort rf fitted and seems to be working fine. Link wire has not been removed. The sensor is not registering the dhw lts per minute display. Any help...
  16. S

    Combi boiler. Running CH whilst DHW drained.

    Have a query regarding a morco combi boiler in a mobile home. It's set up with a link on the thermostat connections within the control panel and heat is controlled by Trv's. I'm planning on adding a hive thermostat to give me more control and intend to use the app. My question is, when the DHW...
  17. C

    Cold Electric shower when any tap turned on

    Sorry a slight variation on other posts! I recently moved into a 3 storey semi (new 2017) Top floor, ensuite Electric Shower Middle Floor, Electric Shower and extra shower fittings off bath, WC, Basin Ground Floor. Cloakroom, WC. Washing machine Combi Boiler Problem- Ensuite Shower goes cold...
  18. S

    Do I need to keep the overflow tanks in my loft if I get a combi boiler?

    In my loft I have 3 water tanks. A bigger black one, that I believe is the cold water overflow. A smaller black one, that I believe is the hot water flow, and a big brass tank that stores the hot water I heat. I'm thinking about getting a combi boiler, and I would like to know that if I do get a...
  19. C

    Currently awaiting repair Combi Boiler leaking for 8 years. Is my plumber incompetent?

    Hi everyone, my combi boiler has been leaking for 8 years. It is a german Vaillant VCW 204 https://www.google.com/search?client=firefox-b-m&biw=1280&bih=672&tbm=isch&sa=1&q=vaillant+vcw+204&oq=vaillant+vcw+204&aqs=mobile-gws-lite..0l5#imgrc=b27-0Ajev_snmM%3A The thing is, this device is from...
  20. S

    PRV and condense discharge form a combi boiler

    Good day all, First and foremost i am not a boiler installer or gas registered, therefore i do not touch this element of plumbing, but i am after the correct advise regarding the following issue. I have had a gas installer who has piped the PRV and condense discharge pipe from a combi...
  21. M

    Thermal store combi boiler, hot water flow rate.

    Can anyone tell me the hot water flow rate on a thermal store combi boiler? As opposed. To a 40kw combi that will deliver nearly 16litres per minute. And any recommendations for a good thermal store boiler thanks.
  22. J

    Hot metal/burning smell from combi boiler

    Have some problems with my boiler that cant seem to get fixed. It's a worcester bosch greenstar cdi 30 combi and it's about 5/6 year old I think. So basically the boiler has been making like a burning/hot metal smell. But it seems to only make the smell when the boiler has been like working...
  23. C

    Smart thermostat solution?

    Hi all, I am after some advice with upgrading my control system on my oil fired boiler. Currently I have an trianco Eurostar combi. It supplies heating to all of my house and hot water to half. It has a standard honeywell programmer and 2 wired battery powered wall stat. Hot water for the other...
  24. J

    HOT WATER IN CYLINDER BUT ONLY WARM WATER FROM TAPS?

    Hi all, Over the last month we noticed water coming out of all the hot taps and shower would only come lukewarm. The puzzling thing is control unit states that the temperature in the unvented cylinder is at 69-70 degrees celsius. When I’ve I released water directly from the cylinder and felt...
  25. S

    Can one inactive radiator impact combi boiler operating pressure?

    Ideal C34 combi boiler, operating pressure dropping slowly but consistently. All active radiators regularly bled. However we have one radiator with TRV set to 0 (we don't want it come on) and this is never bled. Could this be impacting the boiler pressure and should we still bleed this rad? (Be...
  26. B

    hot water on combi boiler setting query

    Good morning, I have a query about the water dial on my boiler bought a few months ago (Vokera Easi-Heat Plus 25C Boiler) and apologies for no pictures. My hot water is fed via the combi boiler and cold water is mains fed. There are two dials under the flap one is for hot water and the other...
  27. E

    Combi boiler producing milky slimy water

    We recently installed a new Gloworm combi boiler in a property and we had a call from the customer to say that when he runs the hot water it comes out a milky colour and feels slimy. Also when he runs the cold tap the boiler fires up and then goes off. This is happening at every outlet. Even...
  28. S

    Im looking for an Old boiler case

    I am looking for a case for a worchester 240 combi boiler. The part is obsolete now but I would be happy to buy one if someone is renewing an old boiler and come across an old worchester 240.
  29. S

    Combi boiler whistling

    Hello, I have a potterton promax combi boiler which has developed a whistling/kettling sound when turning on the hot tap. The sound seems to reduce has the tap is slowed. I have also noticed this sound occurs when the boiler is turned off and the tap is running?? I can reduce the noise by...
  30. Z

    Earthing requirements for combi boiler linked to LPG bottles.

    I have 2 lpg gas bottles outside the barn with new combi boiler inside. my entire plumbing inside the cottage is now redone in plastic apart from feeds to the boiler. the boiler is close to a sink Can anyone suggest what earthing I will require and is any earth bonding required under the...
  31. M

    Old baxi bermuda to combi boiler cost help!

    Hello all and thanks for letting me post this question in your forum. I have just had a quote in of £5,700 to replace our old baxi bermuda back boiler with a new baxi 800 combi boiler. All pipework in the property would be changed and along with nine radiators. Decommision and remove the old...
  32. J

    Adding second DHW to Baxi combi boiler

    Hey guys, Just after a bit of advise if something can be done and if so how complicated it would be... I currently have a Baxi duo Tec combi 28 he a boiler which runs the central heating for the house and hot water for down stairs. We are currently ripping out our upstairs on suit to re-vamp...
  33. G

    Combi boiler making noises and pressure gauge jumping, when hot water is turned off?

    Hi, I am just after some advice on my Glow worm Combi Compact 80e. Background- The boiler started to drop pressure a few weeks ago and required occasional topping up. I searched everywhere I could for leaks on the rads,[pipes etc. Nothing found as yet. It got worse and I consulted a combi...
  34. P

    Alpha Combi Boiler Eco 2 Plus and Thermostat.

    Please can somebody tell me what the correct settings should be for my Alpha Combi Boiler Eco 2 Plus and Thermostat. Please see the attached photograph with all my current setting. Currently, my daily electricity usage seems to be higher than normal and it just was serviced. kind Regards...
  35. P

    Alpha Combi Boiler Settings

    Please can somebody tell me what the correct settings should be for my Alpha Combi Boiler Eco 2 Plus and Thermostat. Please see the attached photograph with all my current setting. Currently, my daily electricity usage seems to be higher than normal and it just was serviced. kind Regards...
  36. M

    Combi boiler pressure issue

    Hi, hoping for some advice on problems I’ve had with a combi boiler. I have a Vaillant ecotec plus 831 serving 4 radiators and 1 towel rad plus water to a bathroom and small kitchen. Only recently bought the house and there were signs of leaking at all rad thermostatic valves and the stains...
  37. A

    Unvented System vs Combi Boiler

    Hi folks, new member to the forum here. Me and my wife are in a bit of a dilemma with our hot water/heating system we currently have. We are planning to do a kitchen extension at the back of the property (currently the kitchen is at the front, with the boiler in a cupboard), + add one more...
  38. E

    Ideal Logic 30+ combi boiler - no heating

    Hi all, Looking for some advice as to why my central heating is not working. We have recently moved 2 radiators, replacing one with a new one. When turning the boiler back on there is now no heating. We have hot water, we have checked the pressure, bled the radiators, reset the boiler. We do...
  39. S

    New thermostat doesn't turn on combi boiler

    Hi, The house I've bought came without a room thermostat. Just a combi boiler with a timer. So I bought a room thermostat, installed it, but it doesn't turn on the heating. Here are some photos to illustrate. So as you see I've piggybacked of the Live and Neutral input from the boiler to...
  40. S

    Boiler not turning off

    Hi there I've got a Valliant echo plus 28 combi boiler and what I've noticed is that when I set the thermostat target to say 20 it keeps on going( not everytime tho) I changed the stat to a nest thinking that might be the problem but noticed that again when I set it to 20 I would look an hour...
  41. M

    Worcester Greenstar Junior 28i combi boiler - no green light or heating

    Hi all, First of all, I hope I have posted this in the correct place (apologies if not). I haven't used my boiler throughout the summer and have gone to turn the heating on. The hot water is fine and no problems but the green light does not come on my boiler and there is no heat. The blue...
  42. P

    New Combi Boiler Hum

    We had a new Worchester Combi put in our loft yesterday, before agreeing to put it in the loft we asked the plumber if there would be any noise issues in the bedrooms below. He said there wouldn't be. After installation, in the bedrooms we can hear a lo whir when the heating clicks on, which...
  43. N

    Will a combi boiler be adequate for my house?

    We recently moved into a new home that currently has a Super Hot MG-100 Hydronic Boiler (installed in 1986, when the house was built). Clearly, the boiler is way past its life expectancy and in need of replacement. We had a couple of boiler companies come give us a quote and one of them...
  44. S

    Combi boiler constantly filling up

    Hi all my Combi boiler a Worcester 28i junior the old one is constantly filling up and over pressuring and the overflow is running like a tap the filling loop is disconnected this happens with the boiler on or off the pressure drops when the hot bath tap is on dose anyone know what’s up with it...
  45. H

    Shower going from hot to cold - Main Combi 24 Boiler

    Hey everyone, I'm hoping for some help/advice with my shower. I've a Main Combi 24 boiler, and my shower is from a mixer tap over the bath. When the boiler flame lights, the shower will be hot almost instantly, but a few minutes into the shower it'll go completely ice cold. I'm then soaped up...
  46. C

    New Boiler - Pressurised System or Combi Boiler?

    Good evening, We are having issues with our current system, mainly around the water pressure being low and having to rely on shower pumps to get enough pressure for our showers - our second pump in so many months has just died so I'm sick of it and figured It's probably worth it in the long...
  47. Dame1701-

    Refill a Baxi combi boiler (24 series)

    Hi guys, We have a baxi combination boiler which needs to be re-pressurised (error code 119 I believe). I've done this several times on different boilers using the tap on the front. I just want to confirm that we need to turn the two taps at the front to repressurise. From what I understand we...
  48. D

    Pumps to boost pressure for combi boiler flat?

    Hi, I live in a 4th floor flat, with 2 recently refurbished showers and a combi boiler. The pressure in the showers was poor, so after getting some reassurances that a gravity fed pump was still ok for my flat, I had a gravity fed salamander pump installed, but after a few weeks of it working...
  49. M

    Combi boiler shower hot and cold

    I had a plumber out to service and do a gas certificate for my combi boiler. Since then my shower that runs off the boiler will not stabilise temperature. When I twist the single lever mixer tap the shower goes too hot or too cold. He says this is not his fault and will not come back. I say it...
  50. L

    Combi boiler modulation for low heat output

    I'm looking to buy a 24kW combi boiler with only 4 radiators rated at 1.7kW each, so I can later expand and add more radiators. I expect relatively low heat dissipation from the heating circuit. If I run the boiler from cold, the water heats up to say 40 degrees in the heating circuit and the...
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