combi boiler

I have an old Worcester Bosch Greenstart HE plus combi boiler. 3 months ago the shower, which has been working perfectly for last 5 years, would start off at correct temperature and then after about 2 minutes would run cold. Just as it was running cold I heard the boiler fire up and after...

So I just had the heating system drained by a plumber to replace a UFH mixer valve, he filled it back up and left in a hurry. I ran the heating to see if it worked OK and noticed all the radiators upstairs were only half full. I turned the heating off and bled them. I tried running the heating...

I need to upgrade my smoke alarms as a result of the new legislation in Scotland. I live in a three bedroom end terrace house with hall stairs and upper landing. My Combi boiler is in the cupboard under the stairs. My understanding is that I need linked alarms with one in the living room, one...

I've been advised from another forum that diynot forum would be more suitable.... We moved into our new build home last September. Last week I discovered the combi boiler's first service was due 21st June, so in order not to have any issues with the two year guarantee, I booked a gas engineer...

Hi all, I want to replace my current thermostat (pictures below) with the Nest Thermostat, but wire labels don't match. My boiler is Worcester Greenstar 24i Junior combi boiler, which is on the back of the wall where the thermostat is. Any help is massively appreciated on how to set it...

Hi, We’ve had an issue with the boiler losing pressure that needs refilling once a week. We’ve had 3 different leak detection companies and they could never find a leak. We’ve had multiple boiler engineers and they can never find an issue with the boiler. Recently, a gas engineer suggested...

Hi, I currently have a combi boiler which drops flow rate when a second tap is turned on. I'm also looking to add a second shower. The flow rate i have is 12 ltr per min and i cannot install a blue pipe because a i have a shared mains with the neighbour. I have a couple questions: If i place...

Hi there, First of all, thank you for your time. I'm looking at replacing my Honeywell T40 thermostat which serves pretty much as an on and off function on my home heating, I've a combi Vaillant boiler and the thermostat is wired to 1 (red cable) and 3 (orange cable) terminals, using the...

Hi, I'm hoping from some sage advice, from you lovely people. I have a Valiant Ecotherm 832 Combi boiler that was put in about 4 years ago. I'd just moved in, and the place had an old oil boiler that sounded like a jet engine, and an uninsulated hot water tank that was taking up tons of room...

Hello, I'm using a Dual Hive for Combi (I'm using this and not single because it got it soooo cheap ). I have researched as much as i can, before asking. Have I set this up correctly ? Hive = Boiler Earth = Earth N =Blue L = 230v Live Out 4: Heating On (NO) = 1 References used ...

Hoping for some advice. I need to remove the plate heat exchanger on my combi boiler to clean it. I've switched off the power to the boiler, closed off the valves and drained it using a hose and checked the pressure is on 0. However, when I start unscrewing the screws that hold it in place I am...

Hi, I have a Worcester Bosch Greenstar 35CDi combi boiler running on LPG. This works very well providing both hot water and central heating. I have recently installed a PV solar/battery system and expect to have more electrical power than I need for about 8 months of the year. I am looking at...

Hi, We have just had a grant vortex oil combi boiler installed and we have two options to heat our hot water; we can have the water on continuously which will keep the very small water reserve in the boiler at a certain temperature. Or we can have the hot water off and then just boost it when...

Hi, I'm currently installing the stated thermostat to a glow worm betacom 24c combi boiler. I've checked the wiring diagrams and done various google searches before I fully proceed, but just wanted one final check about the volt free installation. From what I can see I connect up the L and N...

Hi Community, I hope you can help with this one..? My Ideal Isar HE24 recently failed. Hot water, but no heating. Home insurance sent a man - he said the LP711 timeswitch was at fault and did a temporary fix as an override. So now, when the boiler is switched on the central heating is on...

I was wondering if anyone had a suggestion or idea that may help. We have a Baxi Duo Tec 33 erp, which is about 5 years old, and working absolutely fine until last week. The central heating is working perfectly, however, when you turn the hot water on, after a few minutes (long enough to fill a...

I got the nest to work great with the heating of the house (gas boiler), but the hot water for the house stopped. So no idea what happened. This made me think I should connect 4 to 10 on the main wire box as that is how the nest can talk to the water tank. Is this wrong? 20211106_162911 by...

My mother-in-laws Glow-worm combi has starting making an awful banging noise. Apparently it started about 5 years ago and successive yearly services by a couple of heating engineers has never come up with a fix. One suggested a pipework problem somewhere. In the last year it has become more...

Hello, I am trying to replace an old Honeywell T6360 main wired thermostat with a volt-free smart thermostat. I have an worcester bosch greenstar 30i boiler The current thermostat is wired up as shown in attached photos. From my measurements and bolier digram, I believe the wires I have now...

Hi All, I am looking to change my Boiler (system) to a Combi Boiler. I have received a few different quotes and I don't want to take the water directly from the mains. I have no pressure in my showers as the tank is in the attic and the bathrooms are in the first floor. So I am between 2...