central heating

Hello! We moved to a new house in the summer and have only needed to use the central heating the the past couple of weeks, but it seems to go on and off at strange times of the day and night. As far as we can see all we have is a WR1 unit next to the boiler and a T4RF unit in the hallway which...

Good Morning All, I have a Baxi Combi 105HE. The boiler doesn't appear to be firing when the demand for Central Heating is set to occur. If I run a hot tap, the Central Heating LED goes out, the Hot Water LED illuminates and the boiler fires. When I close the tap, the Hot Water LED goes...

Good Afternoon I would be very grateful for some assistance with my Central Heating controls, as I seem to be having some issues with these. The house I moved in to a few months ago has two DANFOSS devices installed - - An RET2000 Thermostat (In the living room) - An RX1s receiver - in the...

I have a Gloworm Flexicom 18hx boiler, Drayton T721R Programmer, a Drayton MAI/679-3 3 PORT VALVE and a Drayton RTS2 thermostat and a Drayton cylinder stat. The programmer, 3port valve and both thermostats are all new. The hot water system is behaving correctly, switching off with the...

I am currently looking at installing a HIVE Active heating control unit to replace a Danfoss TP5. I currently have a 3 core and earth cable running to the existing heating controls (battery powered unit) I have attached my existing wiring diagram and the HIVE wiring diagram. Please also see...

Hi all, I just bought a house and noticed the central heating wiring was a bit of a mess. I bought a Nest 3rd gen and thought it would be worth trying to sort it whilst fitting it into my new house - everything was wired straight into the old Honeywell ST7100 without any sort of junction box...

Hi all, After a bit if advice if poss. I have an old open vent system in my house, and from a fair old bit of investigation I definitely think the pump is in the wrong place. It's straight after the boiler on the flow side, before the open vent. From my workings it looks like it should be...

Hi. I have a Danfoss CP715Si which has been working fine for years but recently I came back from holiday and the hot water wasn’t working. I reset the controller by poking the reset button and it worked, but it flashed up 706 n02 before the clock came back on. The next day again the hot water...

We had an extension done about 11 years ago and have just found out that the boiler was wrongly installed on the boundary wall. the vent slightly overhangs into neighbour s property which is about 1metre away from their wall and the steam blows around near their door. The neighbours after all...

Had a quick search on the forum and couldn't find anything specific to my question so here goes.. We've been renting a 3 bed detached bungalow for about a year now and regardless of what we've tried (balancing rads, turning thermostat down, turning CH boiler temp up or down, turning DHW boiler...

hi , i am refurbishing a room which currently has two radiators in it. i want to remove both, bin them, and carry out a load of work e.g. soundproof one wall knock all the plaster off the opposite wall fit insulation and then fitted wardrobes etc. At the end of the work i'll move the position...

Can anyone recommend a really straight-forward simple programmer for my elderly parents who need a replacement. It's probably going to need to be analogue unless there is something special designed for old folks. Many thanks

Hi, I am planning to recharge the expansion vessel on my central heating and need some information. I have heard people say that it has to be removed to recharge it. Is it right? Some others say that I have to drain the Central heating before I pressurise it if I don't remove it. I am confused...

Hiya, My HW (hot water) not working after I drained my CH (Central Heating). I released all the air pressure in all radiators. When I set the control to just HW, I can see the fire start for a couple of minutes and then it went off. Any idea why? Should I bleed the myson unit five pump? Is...

Hello, I have a situation that may resonate, I think there could be two faults: Situation: excessive oil being used in heating/hotwater system, pump never turns off, radiators often hot even when programme is set to off/off. There is a drayton motorised valve on a Y valve Often one can hear...

hello Hope someone can help! Fitting Hive thermostats to a large home which has a fully pumped system with dual zone central heating and hot water cylinder running off a Potterton gas boiler. Confused by the three 2-port valves which are on the flow side of the system immediately after the pump...

Hi I live in a 2bed first floor flat with 8 rads, I have a 5yr old Vailant Combi boiler. The radiators in my kitchen, spare bedroom & storage cupboard are stone cold and recently the radiator in the bathroom cooled and stopped working. I've not had an urgent need to rectify this until...

Hi Everyone, I've been struggling with this for a week or so now and after reading a few similar posts, I thought I would see if anyone could give me a little bit more advice. I apologise in advance as there is a little bit of a backstory to this. In December our hot water started going...

Hi, I have a Worcester greenstar 28i junior combi boiler and a tower rf wireless thermostat that I purchased from toleration which I am trying to install to replace the wired British gas one. The wires connected to the old British gas one were brown to the L terminal, blue to the N terminal...

Hi, I have a Worcester greenstar 28i junior combi boiler and a tower rf wireless thermostat that I purchased from toleration which I am trying to install to replace the wired British gas one. The wires connected to the old British gas one were brown to the L terminal, blue to the N terminal...