central heating

Hi About 2 months ago we had a neat fitted and UFH with its own thermostat. The CH did work when it was first installed but with it being summer it was left unused. Now the Nest does not appear to be firing up the boiler. The green dot is on the heat link which means they're connected. The UFH...

Last autumn, I cleaned out the central heating system (old back boiler with F&E) with X400, and dosed with X100. It hadn't been touched for a good few years prior to that. A few months later, I find this gunge in the tank (stringy/white stuff) which Google tells me is probably bacterial and...

Hi All, I am doing a kitchen extension. 3m X 6m, and like to install wet ufh. need help to decide the best way to prepare my concrete subfloor for wet ufh. option 1: mot + sand blinding + dpm + kingspan + dpm+ concrete + ufh boards (18mm) + ufh pipes + screed + tiles option 2: mot + sand...

Hi Householder here. Non-expert. Central heating circulation. One of my (total three) radiators doesn't get hot. It is full of water (no air). There is a regular lockshield value at one end and a TRV at the other. They are both open. I have checked the spindle in the TRV (FAQ6). The...

Hello, We recently took down a radiator temporarily for paintwork. (We have an Ideal Logic System boiler with hot and cold water tanks in the flat, if useful to know). We re-fixed the radiator this morning but now have no hot water or central heating. We have an F1 error message - all water...

I have just dismantled my old oil boiler (22 yrs old) and electrics that go along with it. A new one will be installed later in the year, and moved to a different location due to building works. In doing so, there are a couple of components in the electrics that I have no idea what they are...

I'm replacing my thermostat with a digital one as the old one always overheats the house. The old one has three wires: The new Honeywell has a few options for wiring in the manual: I connected live (brown) to A and 3 (grey) to B, leaving the other two wires unconnected. When doing this...

Hi all, Sorry to add another thread but I’m looking for some help. I have installed a hive v3 water and heating replacing my old st699. This was prompted by removing the old thermostat that I thought wasnt working and doing nothing to find it was infact setting the heat of the house and plunged...

Hi there, we're hoping to install oil-fired central heating in our house but just needing a bit of help/advice with the pipework. We want to open the floors and get the worst of the runs in ourselves as our budget is limited with a baby on the way!! We have the boiler, oil tank and radiators...

Hi, last night our central heating system seems to have developed a problem. Our boiler is an Ideal Logic 15. It appears that the thermostat is working fine (?) but somehow the boiler thinks there is a constant demand to supply heating. For example, thermostat currently at 20c and the flame...

Hello everyone, My home has a BAXI DUO-TEC COMBI 24 HE. The radiators won't heat up even though the boiler is showing a green light saying they are running. The hot water is still working though. I've tried bleeding radiators and then pressurising the boiler after but I still have the same...

Hello, I moved house recently and one issue that I noticed after a week or so was lots of trapped air in the CH. Two or three upstairs radiators had about 1/2 to 1/3 of the top feel cold. The system also had too little pressure to force this air out when bleeding the radiators (the boiler read...

Hi, Moved into a 4-bed Edwardian (1906) terraced house. For the past few weeks I've been hearing a mysterious squawking sound, in different rooms (kitchen, living room, upstairs back bedroom) at different times. Audio and separate video below. When they happen, they are precisely 31 seconds...

I have a problem with one of my new Hive Heating thermostatic radiator valves that I got last month, it has stopped responding to manual temperature changes via the valve it's self, but the valve still wakes up when you go to manually adjust it as shown in the video. Have I accidentally enabled...

Hi, We have just moved in to an old property with a Ideal Mexico 2 boiler controlled from a Horstmann Potterton controller. The timer function has just stopped working and I thought I could upgrade the potterton controller to a Nest thermostat with heat link. I think the Ideal Mexico 2 is a...

Hi all, for a long time I have just had three Hive TRV's. One in my bedroom, one in my bathroom and one in the spare bedroom. I have just installed 6 more Hive TRV's for the remaining radiators in the house (except the main bathroom rad what intentionally does not have a TRV) and wanted to know...

I have a very old system with a back boiler, and a header tank in the loft. It has a TF1 filter, fitted 5 years ago, but has largely been neglected over the years. In September I tried the heating and it wouldn't come on. Also, the header tank was full of brown sludge, which I cleared out...

Hi looking for advice in where to start with fixing our boiler. The boiler doesn’t turn on when central heating only is on, but seems to work fine when hot water is on. Three way valve seems to be fine, in that radiators warm up when hot water and central heating are on, and cool when only hot...

If I remove a radiator from the system, do I just cap the inlet and outlet pipes or do the pipes need to be joined together for the system to flow? The system is a solid fuel backboiler with vent / expansion tank in airing cupboard for radiators. There are 5 radiators in the system, but we are...

Our Riello rdb2,2 26-33 burner won't fire up, there is no wall mounted thermostats, it is about 7 years old and our house is very thermally efficient, so there is 600 litres of oil used over a year. Two weeks ago the burner was running to heat some water without any problems. The other day when...