pump

Can't fix issue of my Worcester Bosche combi 25i. Since I moved to my new house back in February, I noticed that the pump kicks in every hour or so and the flow can be heard especially in the heaters upstairs. The flow runs for around 3-5min and then stops, the boiler itself remains silent. I...

Dear plumbing and central heating gurus, Good evening. I recently noticed that underfloor heating pump is leaking. The heating is working. Due to the leak, boiler pressure keeps dropping. See the photos where the rusty water dripping through. I am wondering, for fixing the leaking, do I need...

I recently moved into my first home in November 2023, I am just starting out in my DIY as the name suggests but willing to give anything a go and have been successful so far. Since I moved in 4 rads haven’t worked as they should, some not getting hot at all and others getting partially hot with...

Evening, all. Our bath and shower have a pump fitted, and I'm used to hearing it going when I'm running the water for either of them, but I've recently noticed that occasionally when I turn the hot water tap for the adjacent washbasin on or off the pump gets triggered for a second. Is this...

Hi All S-Plan with two MRVs (CH and DHW). Valves are controlled by a Vaillant wiring centre. When calling for CH the CH valve opens and boiler fires, all good. How do you connect a CH water pump (type grundfos) to this wiring centre? It has a live neutral and earth but if all connected to 230v...

Hi All Firstly a bit of background. We have an Intergas 28/24 boiler, factory settings bar the min rpm set to 25 not 30. We have just had an extension and we have added in new radiators across the house. We have gone from a 3 bed 1 bathroom to 4/5 bed (if you include the garage now an office)...

Hi, I have a dilemma. I have ordered a shower booster pump and the installation instructions state to install after the vent pipe but as you can see from the pic it looks as if the main hot water pipe from the top of the cylinder has been tee'd twice not including the tee with the vent pipe. I...

Hi all, I've had an issue for quite some time, and wondered if anyone has a suitable solution, given the water pressure that this pump puts out. So, the issue is, that we have our pump permanently connected to a waterbutt, however when the pump has been on, we're seeing that there's a...

Hello all. [following is the edited version as apparently the original had too many words...]. My incoming supply is rubbish. I've looked into improving it through Thames Water and the management company of my flats, but I'm stuck with a little less than 1 bar (second floor flat), and a flow...

Hi all, I’m looking for advice on a particularly tricky situation we’re having with our cellar (end of terrace 1880s Victorian house). We moved in 7 years ago and although everything in the cellar was slightly raised (insinuating there may have been previous flooding), we didn’t have any...

Hi. Newbie question, couldn't find a similar one. When my underfloor heating pump is on, the pump on the combo boiler is also on, this is both when the boiler is calling for heat or not. So, gas light on boiler pump on, gas light off boiler pump on. (Worcester Bosch greenstar 30cdi) Is this...

Hi, I apologise for the length of the message. About one year ago we had a Sanispeed pump installed on the ground floor of our house to take the washing machine water to the sewer system (it was previously linked to the rainwater system). Since then there have been intermittent very strong...

I have a Grundfos UPM3 Flex AS pump for my UFH system. The lights on it are as follows: LED 1: Flashing green maybe every second LED 2: off LED 3: Solid yellow LED 4: Solid yellow LED 5: off I understand the yellow LED's indicate the speed/performance setting it is set to and I can change this...

Hi, I have a WB Greenstar 8000, 35kw. Under warranty, serviced yearly. Installed 2 years ago. I noticed via our smart electric meter than something somewhere was consuming about 30 watts constantly. After much searching I noticed than something in the boiler is running all the time. It...

I'm experiencing a water hammer when my hot water comes on, following on from the heating. My hot water is on a timer, to come on twice a day to fill a hot water tank. If I have my heating on in between, then when the hot water come on there is a nasty, loud water hammer. The hot water /...

Hello to everyone, I have a problem with my Grundfos upm3 pump that does not stop running. Here is the description of the problem: I have two heating circles, upstairs and downstairs which is floor heating. The pump in the question services the floor heating. It is connected with Junkers...

Hi guys, we moved into a place last Dec with an old Grant Euroflame oil boiler with 4 pipes, one set with a Grundfos pump on it and the other set running upstairs to a HW cylinder. We've never been able to get HW generated from the boiler for a sustained period, the water doesn't seem to flow...

Hello Installing washing machine in remote location under stairs/ no drain near by here’s what I’m proposing but never done before so thought I’d have an ask, Fit washing machine with hose into hockey stick trap then connect to Grundfos sololift C-3 lifting station, core through the wall to...

Hello everyone, i have installed underfloor heating, and cant figure out how to wire manifold pump so that it only turns on with the heating on and not with hot tap water it is a ideal logic + combi 30 boiler. Anyone know if its even possible?

I'm finding that occasionally the boiler pump will be running when no radiator is calling for heat (and the boiler is outputting none). I havent really timed it, but its just for a few minutes I think. Its not directly after heat has been called, but seemingly at random. Do some boilers run it...