central heating

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...

I've had X400 in for 2 weeks now. It seems to be working, and I've run the heating hot at times during cold snaps, including with one radiator at a time. However, at this time of year the heating is off during the day and not that much at night either. I could drain it now, but want to get the...

I've moved into a new house and I'd like to upgrade to a smart thermostat, such as the Draton Wiser. Self installation seems do-able but I don't understand my current Honeywell thermostat CM907. Most smart thermostat install guides show many wires coming into the backplate of the existing...

Hi. I have an old back boiler. The system has an F&E tank and a Grundfos pump. This week I turned on the heating for the first time of the winter and the boiler turns on but cuts out quickly. The pipe nearby gets hot, but none of the radiators do. Around 5 years ago, a Fernox Total Filter 1 was...

Hi, looking for some help/advice regarding my mums boiler. She has a Baxi Platinum 28 HE Boiler which is approx 5 years old with a hand held receiver(?) Salus RT305TX and a Salus RXRT505 which is wired up to the boiler and mounted on the wall to the side. Central heating hasn't been on the...

Hello I have installed the Drayton wiser hub r and have connected it to the dual digital thermostats. Whenever I increase the temp on the thermostats the little flame appears, and the LED for heating on the hub r lights up but the central heating on the boiler does not come on. We do not have a...

Hi, Have switched our hot water and central heating to our summer settings using Honeywell ST7100 and have found that the central heating is still coming on despite having set all settings instances not to. Effectively the central heating is coming on at the same time as the hot water is set to...

Hi all, I'm looking to reorganise some copper pipework to where a combi boiler will be installed. Planning to chase out a section of a conrete floor for the pipework and using fixing band instead of clips too so the chase doesn't have to be too wide or deep. My question is can all these pipes...

Hello everyone, Can someone please confirm if this (marked in red in both pictures) is the isolator valve? If so, will shutting this off will prevent water to flow to the 3 port valve connected below the pump (picture2)? We need to replace the 3 port valve body and need to know if we can do...

Ok so this is the third central heating actuator I've had to buy in 18 months. There's obviously something wrong with the valve. Checking it out it looks like the valve isn't turning in the same direction as the actuator or at least the slot the valve fits into is not in the same direction. Am...

Greetings all. I'm after a bit of advice as we have an issue with our HW kettling and on closer inspection the wiring on our 2-port Valves looks a little suspect to my untrained eye. Background: The house was built in 2001 and has an 'S' CH/HW System installed. If the HW is on and the CH is...

Hi guys, Hoping for a bit of advice as boiler has gone down with a 3 month baby in the house! Have a Vaillant Ecotec 418 has worked pretty solidly for 5 years. In Oct 2020 we had a sealed system fitted to improve water pressure and get rid of header tank in loft. Boiler copes absolutely...

Hi all, got the above boiler that was installed in the house back in 2009 before we moved in in 2017. The boiler works as it should, it heats up the hot water and the radiators fine and everything is balanced. however it has started to act rather strange with the heating on. The boiler will...

So we have a conventional boiler and CH system and recently (last week or so) I've noticed it getting worse at heating the downstairs radiators. For a bit of potentially useful background - In November I added a rad in our basement and balanced the system after that things were working mostly...

I recently installed a hive dual thermostat to work alongside my Worcester Greenstar 34Cdi classic. The water side of things works perfectly. Boiler fires up, hey presto. The heating however does not fire the boiler. The heating only works if the water is on as well. Anyone got any ideas. Please...

Where can I buy five core cable in which the conductors have the same colours as most central heating two-port zone valves (i.e. grey, orange, blue, brown, earth). Thus is so that I can re-route some cable runs. I know I could use five core with other colour schemes, and I can get plenty of...