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  1. G

    Boiler firing when the cold water is turned on

    Hi all, Hope you’re all doing well. I had a new bathroom installed recently which involved new piping, and also capping off some redundant pipes. Since then, my boiler (pretty new Vaillant combi) turns on when I turn the cold water on. I’ve done some reading and it seems like the problem is...
  2. R

    Unvented cylinder no cold water to multiple outlets

    Hi, I’m having issues with cold water to multiple outlets. Taps, showers, toilets cold water is fine at the kitchen sink. The hot water system is a Glenhill unvented cylinder. Hot water is fine at all outlets. I assumed the cold outlets not working were from the balanced cold from the...
  3. Mandarin

    Low cold water pressure in only one part of the house :(

    This is doing my head in, so I am turning to the experts here for any wisdom... In the last couple of days I have very low cold water pressure in my downstairs utility room and downstairs bathroom (they back on to each other). The main cold feed (kitchen tap) is normal pressure. And all the...
  4. M

    Heat pump unvented install balanced cold

    If changing a combi boiler system to a heat pump. What do they usually do with the balanced cold connection on the hot water cylinder? Cap it. And put a pressure reducer on the mains so they have equal hot and cold pressures? I can't see them repiping a balanced cold from the cylinder to each...
  5. B

    Cold water feed pipe leak

    Hi everyone, Recently all the water tanks in the attic were disconnected to connect to the mains water supply (mine was already on mains but the other 5 flats in the building needed to be connected to mains water) and the company were also going to fit PRV's and isolation valves to the pipework...
  6. M

    15/22mm cold feed to boiler

    I'm in a house with the cold feed coming up in the kitchen. In 25mm mdpe. The boiler is in the garage adjacent. I plan on running the cold from the sink in the kitchen under the kitchen units to the garage to feed to boiler. And the 15mm coming back from the boiler to the sink. Would there be...
  7. chloeradhsaw

    Baffled By Cylinder Hot Water Draw Whilst Cold Water On

    I had my indirect hot water cylinder removed a few days ago and the central heating boiler and pump is turned off at the fuse spur right next to the boiler. I have been without hot water for a few days which is fine - The plumber left the flow / return to the cylinder uncapped as well as the...
  8. S

    Combi comes on with cold water as well as hot

    Hi, We had a Valiant ecoTECplus 938 installed a couple of years ago. The past few months we've noticed it come on with the cold taps rather than just the hot. A plumber came to service it and said this is normal but we don't think it is + it's a waste of valuable gas. I've read up and think it...
  9. B

    Removal of cold water tank for bathroom taps?

    I live in an apartment and have a cold water tank in it. The cold water tank feeds the cold water tap in the sink and the bath. Recently, I refurbished my bathroom and, according to the plumber that fitted the new taps, high-pressure taps were fitted. Consequently, the water that comes out of...
  10. marco128

    Thermostatic Shower cold

    Hi, Recently noticed an issue with thermostatic shower that was determined to get sorted. The shower would drop (which got worse) and would not maintain temperature,due to water quality here and visible limescale in cartridges,decide to just replace entire shower for a nice new one. This...
  11. dingledow

    Cap off cold water running to shower via loft space?

    I’m doing a bathroom refit, and there’s some strange pipework design that I’d like some advice on, please. I want to remove the cold water pipe running through the loft space because I would rather avoid having a cold water pipe buried under the loft roll insulation. Instead, I’d like to reuse...
  12. Andy110983

    New Triton shower cold

    Hi, I had a Madrid 2 Triton shower, I had it for 6 years then one day it started to run cold, so I purchased a Triton Seville shower and changed them over, that was running great for 3 days and now that has gone freezing cold, any advice? Thank you
  13. C

    2 cold feeds to indirect hot water tank

    Hi, I am reinstating an indirect hot water tank and have 2 cold water feeds coming into it from the same supply. One of the feeds has a float valve but what ever was on the other has been removed. Why would there be 2 feeds to the top of the tank? Can I blank one off and just use the float valve...
  14. tigersb

    Cold Radiator and towel rail

    I have a caravan with a brand new heating system.The Valliant combi boiler is working fine but one radiator and one towel rail are stone cold.I have bled both and also tried to balance the radiators with no success.Even when I shut off all other radiators the problematic ones still don't heat...
  15. Crossfingers

    Cause of cold shower

    Hi I fitted a low pressure shower set when I had a low pressure open vented system, which has a very low pressure rating. I now have a combi boiler with good pressure. I was wondering if having a shower set with a too low pressure rating could cause predominantly cold water to come out? The...
  16. jamesa2487

    One Cold Radiator Downstairs

    Hi. I have one radiator downstairs that will just not get hot. If I disconnect the thermostatic valve then turn it on hot water comes through. When I reconnect it the radiator heats up for a couple of days then stops again. I have bleed the radiators / balanced. Any idea? Thanks
  17. B

    Cold Rad's & return cool on another rad

    Sorry I have sort of asked this before, tried professionals but not great 1st experience hence DIY attempt attempt again. 2 completely cold rad's, another one get pretty warm, flow pipe hot, return v.luke warm. (Both rad's I have manually flushed really well) Hot water works fine, boiler return...
  18. B

    Shower going cold, hot water supply gets cut off completely?

    I have a new shower that has worked fine, albeit with low hot water pressure, for a couple of months. Now it starts hot, but then goes cold completely, sometimes after a couple of minutes, sometimes after less than 30 seconds. Meanwhile, on the side of the bathroom sink, there are no issues...
  19. A

    Kitchen tap running hot and cold

    Hi all We have an issue with a kitchen tap it seems to run hot and cold or Luke warm all the the other taps in the house are fine it’s just this one tap. It is a mixer tap and the combi boiler is about 2 metres away. It’s a Worcester greenstar. Is this an issue with the tap itself or something...
  20. B

    Cold water storage tank overflow

    Hi, I wonder if you could help me. The overflow pipe drips intermittently from the large cold water storage tank in the loft. Not the small F and E tank. The ball valve has been checked and is working ok. The vent pipe from the hot water cylinder is not venting any water into the tank, and the...

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