central heating

Just a question, what happens if a live current goes down the orange wire on a not energised (position W) drayton mid position valve, not as an output but as an input?

Hi All. I have a S plan system where the boiler serves underfloor heating, cylinder and radiators. For some time now, we have had this loud noise when the hot water 2 port zone valve stops, i.e when the stat tells it to stop, we have a loud clambering noise that always wakes us up, and my next...

Hi all my boiler is losing pressure. It seems to be only happening when we use the central heating which suggests that its a leaking component in the system. Thing is this has been going on for a year or so ( we tend to use the log burner rather than the ch) so I would have thought if it was a...

Good afernoon, I recenlty extended the house and added a small area of UFH to the main heating (radiators) system. Since the installation, the boiler randomly overheat and shut down. This only happens when the UFH starts, mainly in the mornings and especially if it starts at the same time as...

Hi, I have run into some issues with my heating over the past few weeks. I have a Viessmann Vitocal 222 with heat pump system, the hot water seems to be working fine at 45 degrees but the heating isn't getting any hotter than 32 Celsius. The radiators are barely getting any warmer than if the...

I've moved into a house with very basic central heating controls (one of those timer dials from the 80s) and non traditional piping set up which is causing some complications and I want to do the minimum work at the minute to modernise it. The way they've piped up the house the boiler sits...

You may ask why I would want such a thing. Our home central heating comes on at 4.30pm. But we don't need to heat the bedrooms until 9.30pm. that's 5 hours of wasted energy every day. If we could time the thermostatic valves to come on at 9.30 it would solve the problem. I know I could install a...

Hi, I just moved into a new house (built 1996) and struggling to work out why I have two circulating pumps on a vented central heating system with open vented hot water cylinder. Circulator 1: Permanently running (even when the boiler is not running) and is hard wired to an on/off switch...

Hi, I am looking for some qualified advise here to deal with a 'noisy' radiator issue (not because of air .. but because of a high flow of water through the radiators due to heavy pump installed by the engineer. It all started when I got new boiler and plumbing done recently as part of house...

Hi, Here's the issue, I've been in the house ever since i was born( 28 years), and we've never had radiators downstairs Hot when the central heating is on, only the upstairs.( Strangely its all radiators downstairs with the issue) The system we are running is an Ideal Mexico Boiler, expansion...

Hi all . I have just noticed that the bleed valves on a lot of our radiators are on the same side as the TRV's - some other radiators have them opposite the TRV/Flow side but majority on the TRV side. Does it matter where the bleed valves are positioned on CH radiators? I would have...

hello all can I have some advice / experiences please. if a radiator is cold/colder than the others on the system would I be looking to open the return lockshield valve more, or less? all rads have thermostat valve (TRV's) on which is turned up to highest (5) and radiators all bled so its no...

Hello, I have a Vaillant TurboMax Plus 828E which I’m experiencing an issue with persistent cycling using the central heating. For years I’ve thought this was normal and that’s just how it operates, but maybe we’re just feeling the cold more because it’s becoming uncomfortable. I’ve got the...

Hi All, So, I am currently having an issue with my central heating provided by my combi-boiler. Every time the central heating is called and the central heating pump turns on, the flow can't get passed the 22mm double non-return valve (labelled by red arrow in attached photo - "Top of Boiler...

Hi, I've recently moved into a rental property with a Remeha C28. We have had hot water without issues but as it's got colder we went to turn the central heating on but it doesn't work in combi mode. It does also drop pressures so I have needed to refill the loop every 1-2 weeks...

Hello guys I have been qualified as a domestic gas engineer but I applied to lots of company and they didn't accept my CV that's why I wasn't successful in finding a job . I have been qualified in leeds College of Building and located in leeds as well but i dont have the ability to start my...

Hello, I've currently got an air to water heat pump being controlled via a Centaurplus c17 series 2 with Honeywell thermostats in every room. I'm looking to replace the Centaurplus with a Google Nest Learning Thermostat 3rd Generation. I'll attach photos of internal wiring diagrams and...

Hi, My central heating runs on a Drayton thermostat - 90 minutes in the morning and 90 in the evening. Past few days the water has gotten cold in the mornings. I turn on the hot water panel of the Drayton (not the immersion switch) which heats the water, but I'm wondering if this is inefficient...

Hi experts, I have a Ideal Logic Combi ESP1 35 boiler and its c.6 years old in my 'new' build. I also have a two wired Danfoss TP5000si thermostats, one upstairs and one downstairs connected to two Danfoss HPA2 2-port actuators, as you'd expect. Problem I have is that neither of the thermostats...

Hi All, recently had the three port valve replaced. It worked fine for 3 weeks, now it is making loud banging noise when central heating is turned on from controller and there is call from heat from central heating thermostat. Please listen to the video in the link. The noise disappears when the...