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heating

  1. D

    Heating problems, radiators fluctuating.

    Hi, My step daughter was ripped off by a cowboy builder so I’ve been helping her out and fittted her two radiator. I’ve no idea what is under some of the floors or in the walls but since flushing it all out and starting the combi up she’s been having problems with her heating. She reckons the...
  2. I

    Thermal Store Heating Up Cold Feed Pipe

    Hello, I have just installed a vented McDonald 250L thermal store, it is for multi fuel but currently just connected to a standard oil boiler in the garage which is fully pumped to the TS, the system has two pumps both basic 3speed Grunfoss, one on the boiler return and the other on the CH flow...
  3. S

    No heating flow. Pump and diverter working, what else could be wrong?

    Hello all, I have a WorcesterBosch Greenstar 42CDi classic combi, which is providing DHW fine, but not heating. Was working fine in spring, probably not been used until recently now it's colder. When heating is called for, the boiler fires up ok but soon shuts down the heater as the...
  4. K

    What could be wrong with central heating?

    Hoping for some advice as I seem to be hitting a brick wall. Moved into a house last year, radiators down strairs (4 of them) never really got warm, replaced the combi boiler this year as it was loud and leaking (its in the loft which has been converted into a room). Since turning the heating...
  5. J

    Blockages in 10mm plastic central heating pipes

    Our house was built in 2007 and we are the second family to live here - moving in in 2017. The central heating has been working fine - although the gas boiler is perhaps nearing the end of its life. But the boiler is not our current issue. Last winter two of the radiators did not heat up and...
  6. D

    New central heating - what should I be asking for?

    We live in a 1980s four-bedroom detached house. The time has come for new central heating. The current system is a mild revision of the original heating installed when the house was built, and this revision was largely to replace a life-expired boiler: non-condensing fan flue boiler open...
  7. J

    Cylinder System not running heating and water at the same time

    Hello, Newly moved into a house with a mains fed cylinder system. I've never had one before and struggling to get it working. When I turn either heating or water off at the timing unit, the other works fine. Eg, with heating off, water works and vica versa. The indicator lights are solid blue...
  8. B

    Main heat exchanger overheating when heating off

    Hi All, Have a peculiar problem with my Gloworm Flexicom 30cx combi boiler, the main heat exchanger is getting red hot and fault coding on overheat even though the boiler and central heating is not on, i shut the boiler down for a while, clear the fault code and it will be fine again for...
  9. D

    Redbrick house from 1904 - Already has underfloor heating

    Hi, I have an 1904 redbrick 2,500 square feet house. We have UFH on every floor. 3 Floors House is reasonably well insulated but far from perfect. Would there be any point in installing a "air to water" heating system that could link into my existing UFH??
  10. N

    3 way valve not working got hot water no heating help

    I have an old Potterton suprima boiler with a hot water tank and pump. We have hot water but no heating, the light on the boiler is showing amber (no call to heat) I have been told that this is likely due to the 3 way valve or motor on it (Myson Power Extra). I am wondering whether to try and...
  11. A

    Central heating rads

    Hi all, My property is a 3-bed terraced with double glazing windows... It currently has no central heating, so I will get a new combi fitted shortly... However, I will be putting in the central heating. My question is, is it still necessary to have a lockshield on the hall rad? I assume that...
  12. G

    Control System for 3 zone Central heating?

    HI folks, this post is a follow up to my post relating to my single pipe heating system. In summary, I have a house built in 1980 (I bought it 2 years ago) that had a single pipe heating system but over the years there have been some changes made to the system that meant it didn't work. I have...
  13. M

    How to design a domestic plumbing and heating system

    I am starting a large victorian renovation and it will involve, (amongst everything else) installation of an entirely new heating and plumbing system. Plumbing, like most trades, seems to have two main aspects; design and installation. The installation part on my last two projects was painful...
  14. H

    Honeywell Underfloor heating controllers

    Hi there, I'm considering having my heating system controlled by Honeywell Evohome. I have a question about the underfloor heating controller.... I have a single zone water underfloor heating in the kitchen. The controller is currently a Wunda. I've never been all that happy with it because...
  15. J

    Hot water only when heating turned on

    Hi, we have an HIU unit, which we only get hot water from the taps when we turn on the heating unit. A number of engineer have come in to check but they have stated they couldn't see any issues. Any thoughts? could it be the heating plate?
    • Jamsheed
    • Thread
    • heating hot water water
    • Replies: 1
    • Forum: UK Plumbers Forums
  16. Inverness

    How is a 2 zone heating system suppose to be piped

    Hi. A new house regulation for a 2 zone heating system because it's bigger that 150sqm. I'm I right in saying zone 1 should be all of the downstairs radiators and zone 2 all of the upstairs radiators ? I have thermostat room programmer down the stairs and another one upstairs. I think the two...
  17. J

    Worcester Boiler - GREENSTAR 8000 Life - Heating anomaly

    Worcester Boiler - GREENSTAR 8000 Life - Heating anomaly I have recently noticed when I have lost power to my boiler and power is then reinstated that the Central Heating comes on. Is this the norm?…ALL CH controls are off.
    • Jon999
    • Thread
    • boiler greenstar heating worcester
    • Replies: 9
    • Forum: Boilers
  18. S

    Heating/water controls

    Looking for a bit of advice. My CH system has 2 controllers one for water and one for heating. I would like to replace these with one controller for bother heating and water contol. I have a Salus RT500RF which controls the heating and is mouted in the hall and is battery operated. In the...
  19. G

    Hive Active Heating Thermostat V3

    Hi I’m looking to install the above. Atm I have an older one fitted (old wireless thermostat and old receiver that’s wired into my combi boiler. Pic below shows how my current one is wired, live neutral and would the 2x black wires be switch wires and would matter what way they were wired in? My...
  20. B

    Vokera pre heating problem.

    I have a Vokera Vision 30C and when using a tap 3 ft from the boiler I can see the temp of the hot water in the boiler display. Most times it is less than 30 degC and the boiler takes maybe 30 seconds to heat the water. I have pre heat enabled, P shown in the display, but the water is never at...

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