central heating

Hi, I have an old style back boiler and can't get my ch work. The dial on the thermostat is on maximum but heating comes on only when it's extremely cold. Hot water works ok. I'm thinking the thermostat could get dusty inside as we did some plastering but no changes after I cleaned it. I...

We have an open vented S-plan system with an old (but ultimately quite reliable) Ideal Classic NF50 gas boiler. This is one of those older systems where a small controller is in charge of the two zone valves, the pump and the power to the boiler. When one (or both) valves are open and the pump...

Hi, My flat has an old pumped central heating and gravity hot water system controlled by a Danfoss 103 electric-mechanical timeswitch. [Correction from ianmcd, below: It is not gravity HW. It is an open vent system with pumped HW]. No room thermostat. Hot water and heating cannot be switched...

I'm hoping someone can help. I don't know much about central heating systems. I've just installed a new boiler (Vaillant Ecotec 637) and new hot water cylinder. Previous system was vented whilst the new system is unvented. Problem I have is when the boiler cycles to heat the radiators I hear...

Hello everyone wanted some advice on our Central heating system in our flat we brought 3 years ago...we inherited the system from the previous owners who probably already had it for 4 years... Junkers boiler Ceranorm and thermosta (set to come on 6am-11pm at 21C) Grundfos pump on timer (set to...

I am working from home at the top of the house in a converted attic. As this is the top of the house, I usually bleed the radiator quite often due to air pockets which is fine and the Radiator gets hot. This is a new radiator, but it seems suddenly every 30 mins or so while the heating is on...

I have a heat only Worcester Bosch 30kw boiler and a 300L Ideal unvented cylinder. There are 3 zone valves, one for ground floor heating, another for 1st floor/loft heating and the last is for hot water. There is only one return pipe for the radiators. I had this and completely new pipework done...

Hi everyone, I wonder if you can help. I had a leak recently and this was because the person who installed the combi boiler forgot to connect the waste pipe to the condensate pipe. The company came round and a different guy connected the waste pipe. However, he didn't connect this to the sink...

Hi All Have run into an issue with heating at not the best time of the year. A few nights ago at 2am, a loud grinding/buzzing type sound was coming from the cabinet where the water tank, central heating pump and motorised valve etc are located. This noise eventually went away however the next...

I have a potterton boiler that’s leaking water from under the control panel. Just seems to be a few drops every few days. It seems to be working otherwise. Worried it’s on its last legs. Any ideas? Thanks

i have a SALUS RT500RF hand held controller and a VAILLANT combi-boiler. i recently had to change the batteries in the hand held unit and since then it doesn't actually control the boiler. both red and green lights are on on the receiver unit but even if the flame is showing on the controller...

Looking for help connecting up a Nest E. Only needs two wires Common and ON Going off this. https://electronics.stackexchange.com/questions/470132/wiring-nest-thermostat-e-heatlink-in-place-of-original-thermostat Live (1 Red) is Common and goes to C 3 Yellow would be to ON ??? Thank you for...

Hi everyone, Hope you can help. I have some sludge in a radiator that needs flushed, so I'm trying to remove the radiator. We just moved into the house, and I'm not familiar with this type of valve (H Block I think?) Basically, I'm not sure whether there is a lockshield valve, which I'm...

desperately needing help, I had a new baxi boiler 800 combi fitted last week and its constantly making a whining humming noise, it no sooner stops and it starts again. The plumber came back and drained the radiators but its still the same. my friend and neighbour both have the same boiler and...

Hi everyone, I've set the on/off cycles for both HW and CH differently. Irrespective of the whats shown on the display (Auto, On, Off etc), both CH & HW seem to be always on ie if I open the tap, the water is hot and if I open the TRV, it turns on the radiator. I'm renting an apartment. I...

Hi all, I have a Glow Worm Betacom 24C and a Boss TPSRF31 wireless thermostat and receiver. My issue is this: with the heating switch in the on position on the boiler and the thermostat set well below the ambient temperature (at time of writing ambient is 22 degrees and thermostat set down to...

Hi all, I understand that a CH system requires that at least one radiator have no TRV to prevent the user from closing all valves, and overheating the system, but I have also read on this forum that the radiator lacking a TRV is typically placed near the thermostat...

Hello, Last night when cleaning I took one of the radiators off the wall to dust off the wall behind (downstairs and thermostat controlled) when the pipe coming out of the wall started to shoot out water, I quickly turned the water / boiler off and grabbed a bucket to catch the water until it...

Hi all Unfamiliar boiler and was told over the phone how to top up the pressure, however the boiler in question is a Vokera Compact HE and the taps/valves underneath the boiler are arranged as follows: Yellow (Left), Black screw valve marked 'Vokera Adjustable Stopcock' (Right). Following...

Hi, Looking for some advice please. My current set up is as follows : Conventional gas boiler with a flash immersat timer switch, heats the rads and hot water tank. There is one thermostat in hall which will switch off rads when temperature exceeded. I would like to have a wifi timer switch...