central heating | Page 3

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central heating

  1. V

    Central heating turns off early hours in morning

    hello experts, I am not a DIY plumber, just a home owner who had a plumber come in to fix a couple of things at home. But doing all of this, he may or may not have introduced a new problem which I wanted to get advice on from you experts Every night since the plumbers visit, the central...
  2. M

    Central heating not working as it should.

    Hi, I have a three floor detached house. My central heating system consists of separate up and down systems so two pumps. The system was working fine last week but then I got a leak from a downstairs rad since then I can turn the upstairs on and it will get hot. If I turn it off then turn...
  3. J

    What should I expect from a competent central heating engineer?

    I had an engineer out today to quote me for a boiler install. It got me thinking, what should they be doing so I that I can see they're competent? This thread is inspired by something I read on here earlier.
  4. G

    Need Advice about Boiler and Central Heating Repair Please

    Hi. I'm having some issues with my boiler / central heating and have enlisted a local 'Combi Heating Specialist' to sort it out but he seems to be making things worse. I really need another expert's opinion, to put my mind at rest, or help me make the decision to stop using his services. I...
  5. L

    Weird central heating issues

    Evening all. I am just trying to get some idea as had a couple of plumbers round but still getting same issue . Basically moved house recently and i just cant get figure the central heating system out .So.... Its had a new Worcester bosch boiler about 2 years ago so all good on that front and...
  6. panda_96

    Bleeding air from Central Heating System

    Boiler is making a gurgling sound and keeps short cycling. I believe there is air in the the system and I've already bled all the radiators. This is the pipe leading into the water cylinder, is it where I should be bleeding the air from?
  7. B

    Ever had Central Heating Water leak INTO Cylinder fresh water ?

    Hi, Vented system, F&E Tank etc. Cylinder about 10-12 years old. Just running some x800 through to try & improve radiator heat. (another story) Been in a couple of hours. Just run a bath & the water has a slightly odd brown'ish tint to it. never had before. does not smell. Is there anyway it...
  8. B

    Central Heating cuts out when DHW reaches set temperature

    Hello, I hope someone can give some advice with this problem. I have a Vaillant ecoTec plus 418 with Drayton MA1 mid-position actuator, Drayton HTS3 cylinder stat, Honeywell DT90E room stat and Drayton LP522 controller. Boiler fires up reliably, but after it cuts out as soon as the DHW...
  9. T

    Central heating room thermostat replacement

    Hi all, I have a simple mechanical Honeywell wall thermostat (i think you call it a 2 wire). I want to replace it as it is a bit old and unsightly and seems to have a lot of "play" between on and off. I could obviously easily replace it with the same thermostat or a very similar one, however i...
  10. M

    Central heating switches off

    Boiler is working but out the blue is goes off. Controller is working, receiver is working, can see it clicking and red light flashes when I move thermostat up and down. If I override hot water, boiler fires up but nothing for heating. Boiler is Worcester Greenstar, 2 yrs old. Brand new...
  11. D

    Grundfos noisy oil central heating

    Hi. We have a wolf oil central heating system, with a grundflos alpha 2 circulation pump. Sometimes it makes a tinkle noise ( like metal to metal) and sometimes not. With and without burner running. I removed pump and impeller is ok and clean. Bled system through. Nothing helps.
  12. G

    Help please! Issues with Central heating & Hot water

    I will start by saying I am not a plumber but I have learnt loads thanks to people on here. I am currently having an issue with heating & Hot Water. It is working but I have to do certain things to make it work each day. The question is about the 2 gate valves in the picture. Valve number 1 and...
  13. N

    Dual zone central heating query

    Hopefully a quick question: I have bought a new house and had a few issues with the CH system (they connected the valves for the two zones to the wrong thermostats which has now been fixed) but have now come across something that doesn't make sense to me. I have a downstairs cloakroom (toilet)...
  14. A

    Understanding gas central heating system

    Hello everyone, We have recently moved to the UK, so really don't know much about gas central heating and boilers over here etc. So this is probably a very basic question but I just don't know! We are moving to a house later this month. It has a "wall-mounted gas-fired boiler for domestic hot...
  15. S

    How to test central heating pump?

    Happy New Year everyone! I need a little help on figuring out what's wrong with my central heating (CH) system. I'm in a new house, and I know the system has a single motorised diverter valve for hot water and radiators (rads). Problem is almost none of my rads get hot, except for 2 or 3 that...
  16. Desktop987456

    Pipework advice - Central Heating System

    I have a 320 sqft double storey house with 6 bedrooms. The house is serviced by two heat only boilers (non condensing); a 120k btu (35kw) and a 70k btu (20kw). Both Boilers are installed at ground floor (120k at front and 70k at the back). Front boiler serving front downstairs and upstairs rooms...
  17. D

    15mm pipe run from central heating manifold query

    Hi Guys Im aware the say you should keep 15mm runs supplying radiators to 12 metres. However if running one rad from a manifold, how much can I get away with? Im not holding a gun to your head. One of my runs has to be just over 13 meters. Thanks in advance. Donkey.
  18. J

    Central heating in winter when on holiday

    Hi all, I am thinking to set boiler when we are on holiday soon this winter. First, I want to turn off the cylinder (hot water tank) handle (please see attached photo arrow pointing), this way the house will no water flow at all, this is to prevent water/pipe leaking/burst which happened last...
  19. T

    Drain Central Heating System- when is it safe to switch Boiler back on

    Drain central heating system (water tank in loft) in a two storey house - ground and first floor when is it safe to switch the boiler back on - is it only when the tank in the loft has stopped making a noise - implying that the system is back to where it was before the system was drained. The...
  20. dilligaf

    Grundfos Central Heating Pump Weak?

    Do central heating pumps lose their strength over several years and is it worth taking it apart and servicing it? Are the two seals either end 1 1/2 inch or 1 1/3 inch? What's the latest central heating pump should I need to replace mine (photo) like for like?

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