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central heating

  1. B

    No Hot water in Taps, but central heating working

    Hi, I have a Glowworm Flexicom 18hx condensation boiler. I'm not getting hot water in the taps, but the central heating is working fine. The engineer came from the insurance company and said that I was missing a 'hot water controller'. So he said he can't do anything and left. So, 1) I've got...
  2. O

    Central heating pressure is discharging through condensate trap.

    Hi everyone, my sister's 5 year old Worcester Greenstar CDi Classic boiler is losing pressure rapidly[down from 1.5bar to zero overnight]. I checked everything I can think of including all visible pipework, radiators and pressure relief valve outlet and couldn't find a thing out of the ordinary...
  3. N

    Central Heating System Losing Pressure Quickly

    My boiler started to lose pressure once a day about a week ago. It is now losing pressure very quickly and goes from 1.5 bar to empty in an hour. It does the same with just the water on and the water and central heating on. Its a Logic Max Combi C30 and was only installed in February. The Ideal...
  4. A

    Central heating refill valve and pressure relief vent

    Hi all, hoping you can advise on a couple of problems I need to resolve. Please see photo 1. Not sure why there are two valves (in series) to operate to feed water into the system and raise pressure, but the lower (first) valve leaks water while open. Initially a small dribble, but most...
  5. E

    Is a central heating system flush needed after replacing a radiator?

    I purchased a Kudox steel panel radiator to replace a radiator that developed a leak. There is a warning triangle on first page of the Installation Instructions with the following in red capital letters: ‘AFTER INSTALLATION THE ENTIRE CENTRAL HEATING SYSTEM MUST BE THOROUGHLY FLUSHED WITH A...
    • Enthalpy
    • Thread
    • central central heating flush heating heating system radiator replacing system
    • Replies: 3
    • Forum: Central Heating Forum
  6. CorgiDirect

    Sludge is the #1 cause of central heating breakdown

    ADEY Filters and Chemicals from CORGI direct. Large Range. Next Day Delivery - https://corgi-direct.com/adey-18152-0000 Sludge is the #1 cause of central heating breakdown. We have a wide range of ADEY Filters and Chemicals
  7. fumefree

    Strong fumes, dodgy central heating

    Hi, I'm new to the forum and new to oil boilers. I have an older Worcester Heatslave 18/25 (13 years). I've been in this house for about a month. I had an engineer do an inspection before moving in and he said everything was perfect. Since then I've turned on central heating and water heating a...
  8. M

    ACL LP522 Central heating issue

    Hi, Hope you can help with a central heating issue. I tried turning the central heating on today but without success. The orange light that usually comes on when the heating is triggered isn't illuminating - I've tried the once, twice and fully on modes and it doesn't come on in any of these...
  9. D

    Viessmann Vitodens 100-w trouble maintaining central heating temp

    I have a 2017 Viessmann Vitodens 100-W condensing gas boiler connected to a radiant floor heating manifold. No external pump. 120m2 floor area. Recently had the annual service. Boiler has been on for about a week now heating the underfloor cement slab. It is my impression that the boiler seems...
  10. H

    Central heating problem.

    Hi. My central heating system consists of an extension with wet underfloor heating (3 zones) and the original part of the house standard pipes and radiators. With just the underfloor heating on and the rest of the system turned off, the radiators get warm. Any idea what the problem might be. My...
  11. Macarius

    Strange issue with boiler - (Baxi Bermuda 401 - Vintage) - no central heating!

    Hello folks, just fired up the boiler for the winter and booked in a service and i'm having an odd issue, the hot water heats up fine, scalding hot but the boiler refuses to fire up the central heating. I have one of these old back boilers behind a fireplace which has a separate control panel in...
  12. theboyroberts

    Logic Combi ESP1 35 always showing demand for Central heating

    Hi folks, I've got a potential problem with my Logic Combi ESP1 35. When the boiler is set to Central Heating and Hot water mode, the boiler indicates that there is a constant Demand for Central heating. When the thermostats (TP5000 Si) are turned off (both pulled from the wall and also...
  13. A

    Combi ALWAYS loses ALL pressure ONLY after using the central heating..

    Hey all My combi heats water up no problem. And it heats up the central heating for hours, no problem. But after I've used the heating, the pressure is all gone! Wassap? Thanks in advance!
  14. S

    Hi all our boiler has just had a new expansion vessel fitted but pressure is still going to 2.9 bars when using central heating . Is this normal? Than

    Hi All our boiler has just had a new expansion vessel fitted bit the pressure is still rising to 2.9 bars . Is this normal ? Many thanks
    • Sangita
    • Thread
    • boiler central central heating expansion expansion vessel heating pressure vessel
    • Replies: 5
    • Forum: Boiler Advice Forum
  15. J

    Gurgling and air in central heating

    Hello, Around 2 years ago we had a very old, leaky Baxi combi replaced with a newer Baxi. For background I live in a 3 storey terrace. First floor has 3 rads, second floor has 4 rads and third floor has 2 rads. We noticed problems with noise and air in the system. One of the rads in the loft...
  16. F

    no hot water, central heating works fine

    Hi, I'm new to this forum, please apologies if this is not posted in the right section, or an answer exists already somewhere. I have this issue: no hot water in any tap in the house, but the central heating works fine. The boiler is a Vaillant system 15. A gas engineer had a diagnosis and...
  17. J

    Central heating not circulating after New Navien Combi fitted to Santon Premier system.

    I enjoy a pint at my local pub/restaurant owned by a hardworking Chinese family. I have had many years experience on property maintenance and they asked for my help. He had an old LPG gas boiler feeding a Santon Premier unvented cylinder feeding 23 radiators and hot water for the kitchen. New...
  18. T

    Central Heating Programmes

    Just had a new boiler installed and looking for some efficiency advice, please. We have always set the Heating to run from 6:30 until 21:00 via the programmer and have regulated it from the thermostat. We have used the same setting for the Hot Water. We have a conventional system with our boiler...
  19. G

    Advice on new Smart Central Heating and UFH system

    Hi All, I am getting a new Central heating system installed and looking for advice on the best design. The heating system will consist of the following components: System Boiler. Megaflo. 2 Zone Underfloor heating. 15 Radiators. I have narrowed it to the Heatmiser Neo stat system or...
  20. S

    Central Heating taking two hours to warm up

    Hello, I'm not a plumber, and may get some of the terminology wrong in this post, please don't shoot me down for it. Since moving in to our home several years ago, we've had issues with the performance of our central heating. In winter, the living room can take up to two hours to get upto 18C...

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