boiler

Have a Worcester Bosch oil combi boiler with a slow pressure drop (drops from 1.5 bar to 1 bar over 2 months). Boiler feeds about 12 rads. Property is a bungalow. Have checked multiple times for leaks can't see any either by rads or under floor. Pipework is clipped to joist no screed or...

Hi, we had a Grant's vortex Pro external combi 26 oil boiler installed in July 2024. Approximately 3 weeks later we noticed that the boiler was coming on by itself and would sometimes be on for hours before we noticed. The thermostat (a Center RF wireless thermostat) was not calling for heat...

Getting water hammer when motorised 2 port Honeywell turns hot water off to the cylinder. Valve works fine and its the right way. System been in for years and its just started happing. Boiler pump keeps running which is correct to dissipate the heat but as soon as the hive turns the hot water...

Hi All, I was changing the pressure sensor on my GLOW WORM UTRACOM 30 CXI . I followed the instructions posted elswhere here (turn off boiler. Turn off CH flow and return) I managed to get the return valve off but could not get the Flow valve off, so I drained the whole system. I now cant turn...

Hi, Odd issue here, not sure if it's a plumbing one or an electrical one. Apologies if posted in wrong forum. Background Our central heating and hot water system operates off a pair of 2-port valves controlled by a HW/CH digital programmer. The HW is programmed to switch on at certain times...

Hi Forum, My boiler is Ideal heat 15 which has a minimum CH output of 4.8kW. Ground floor: Living room - Hive thermostat and rad with normal TRV fully open other two rads (diner, hallway) normal TRVs Upstairs: 3 bedrooms with Hive TRVs, bathroom towel rad fully open. I want to install Hive...

Hi, I have an Ideal Logic Combi ESP1 35 boiler. I'm trying to switch the mode from heating + hot water to hot water only, but the mode dial is completely stuck and won't turn at all. Is this a common issue, and is there a safe way to free the dial without damaging it? Thanks in advance for any...

Looking for help - I've got a Worcester Bosch Greenstar boiler, 3 months old, that I can't repressurise. Any help much appreciated, evening temp is dropping fast and we're getting chilly... Thanks! I just bled a radiator for about 10 seconds, and after that the boiler's pressure had dropped...

Have an ideal logic 35 boiler, logic. Was loosing pressure several times per day on water and heating but just had new vessel and PRV fitted, now water fine, but on heating would be ok while heating on, rads hot and pressure ok, when heating stops and fan runs for 5mins then boiler stops the...

I have a Worcester Greenstar 30i that’s 9-10 years old, about 3 years ago the heat exchange plate all of a sudden started getting blocked with what’s in the picture attached. I’ve had it cleaned out, exchanger plate replaced twice, every radiator in the house has been replaced, inhibitor put in...

Hi Folks, I need to run a new oil flexi-hose into my Firebird oil boiler and will likely need to bleed the supply. I'm just not sure where to bleed air from - any views on whether it's A, B or C in the diagram please? When the unit is fitted back in, A is underneath (next to the line in), B &...

So I have been at my elderly grandparents over Christmas and noticed that the analogue pressure gauge under the boiler was noticeably swinging around a bit in the 1.5-2.0 Bar region whilst was the boiler was on. Is this normal or does it indicate a underlying issue? I read somewhere online...

I had a pressure gauge fail on a Worcester Bosch 30i gas boiler. The boiler is 7 years old and out of warranty so I didn’t have an issue paying for a replacement part and the fitting. I had the boiler serviced at the same time. All was well for a week then the replacement, WB OEM, gauge has...

I am looking to wire my combi boiler with a Drayton Wiser thermostat. As part of this, I am also looking to make the following improvements to the current wiring: Replace the boiler's twin and earth with 3-core flex, as twin and earth is not compliant for high vibration and heat areas Replace...

Hi All, Kindly asking for some help. Moved into a new build property that has an Ariston boiler and separate water tank with 2 zones (upstairs and downstairs). Each Zone has its own Thermostat - Danfoss TPOne with only a brown (COM) and a black (NO) wire. The TPOne is battery operated and acts...

Please can someone explain what sort of pipe runs a plumber would have made in this situation in a friend's house as it doesn't appear that it should work. A new system boiler was installed downstairs with internal pump, replacing an old heat only boiler that had a header tank in the loft. The...

Open-vent 4-port boiler was recently changed for a new 2-port model. The diagram shows the connections to the FE tank. The junctions are numbered to make it easy to refer to. Can anyone comment on the layout?

I am trying to repressurise my boiler, this has previously been a routine task but the process I would usually follow isn't working this time. I have attached an image of the pipes and valves. Previously I would need to turn the blue and black valves nearest the loop, but this is not working...

Hoping someone can provide insight on issues as we've had plumbers come out 3/4 times and not being able to diagnose. 10 yr old boiler, Worcester Greenstar 25si , hot water runs fine, when heating turns on it causes a lockout/reset required, after 1-3 times of reset it then works fine. Pressure...

My 20 year old boiler is on its last legs, so am looking at replacing it. However I’m in a 3rd floor flat with a flue which goes out of the wall by a window. The boiler is by the wall so the flue is quite short. (I meant to post a photo but I don’t seem to have one, so I will post one tomorrow...