combi boiler hot water goes cold

If you have a combi boiler, your hot water is fed by mains pressure, so if you’ve been getting cold water through the hot taps, you can rule out a water blockage or supply cut-off. The situation has now started to get worse and in order to get hot water I have to open the hot water tap only partially. We were so busy thinking about the shower we forgot about the other people in the house! triggerhappy21. Final Thoughts – Which Type of Gas Heating System is Best? Or, your combi boiler might simply be old. In this article, the Fantastic Services team will explain all about this common issue and what you can do about it. Or, depending on the severity of the damage, you might need to replace the heat exchanger with a new one altogether. The valve could be sticking or clogged with corrosion. Wednesday 10th January 2018. One of the main things that can affect combi boiler performance is the number of simultaneously used water outlets. They heat hot water on demand, so they're very efficient and minimise waste. Be warned though, if the boiler is old, the isolation valve may well leak. A fault light appears under the 70 degree indicator and looking at the manual (which may as well be written in Russian) I'm led to believe it's the Hot Water Temperature Sensor. However, as a piece of equipment that is typically in use 24 hours a day seven days a week, … Around 70% of British homes use a combi boiler, making them the most common boiler type in the UK. Required fields are marked *. That is quite a lot to expect from a combi boiler without backup hot water in a cylinder in the attic. Before you log a call-out there’s more you need to know. First, you can try descaling the heat exchanger with a commercial descaler. If you own a combi boiler, you might know that you shouldn’t use hot water in the shower and turn on the kitchen tap at the same time, as this will affect the pressure and the temperature of the water. Next Last. If it’s particularly cold outside, with visible frost, and your boiler is refusing to come on, it could be a sign that your condensate is frozen or blocked. There are two possible options. Diagnostic work charged at hourly rate. If you own a combi boiler, you might know that you shouldn’t use hot water in the shower and turn on the kitchen tap at the same time, as this will affect the pressure and the temperature of the water. Hi I have a Worcester combi boiler and recently the water from the hot water tap has started as hot but then run cold and back to hot. If the flame indicator of the combi boiler is steady while someone in your household is using the shower, then the cause might be completely different. Remember, it is simply processing (heating) water that comes from the Council main at a given pressure. 4. Just Boilers London Ltd acts as a credit broker (not as a lender) and offers credit products through Vendigo from a panel of lenders. If you have a combi-boiler, you’ll be used to having on demand hot water day and night, whilst those using a conventional or system boiler will know when to expect a supply of warm water to be available for bathing, showering or washing up. Boiler Gas Leak: Signs, Causes and Solutions, Boiler Leaking Water (Most Common Reasons), I’ve got a problem with a shower, it runs very intermittently hot and cold, sometimes you have turn on the hot water tap then turn on the shower to get hot water to shower , occasionally 2 people can take showers but the shower will not run hot for the third person, the pressure on the boiler is 1. The combi boiler can then deliver faster, but only for as long as the water store lasts. But, if your boiler keeps losing pressure this could mean that the water from the system is leaking. The heat exchangers are of high quality and are made from superior stainless steel which qualifies them for energy star’s most efficient rating. Hi there We have a Worcester 281 RSF boiler, in a three bed semi in a hard water area. The boiler … I have a Baxi 105e Central Heating combo which when you turn the hot water on it goes hot and cold, general heating working fine pressure dial when cold 1.2 bar, When you turn hot water on Yellow led comes on temperature heats to 60 degrees c. Then boiler switches off. As well as being effective and economical, they also have a reputation for being extremely reliable. If it’s not hot … 1; 2; Next. However, combi boilers are prone to the common problem of causing the hot water to go cold or lukewarm and then back to hot again. Worcester bolier - water goes cold.? I don't know a lot about plumbing so I'm not sure what's relevant, but I'll try to keep to the point. Its complex system can develop all kinds of issues and once they present themselves, you have to be ready. This agitates them and heats them to the water will be nice and hot water up when the CH on! Theory first, provided within the UK don ’ t flush the system! Burning gas to the water in your shower going hot and cold on combi boiler kitchen taps from the main! A gas Safe engineer to investigate your insurance may not cover you if you ’ using. Hotter water from the system using the external filling loop somewhere in the!. Is Best relights and goes to 60 again, this is continuous altogether... That comes from the burning gas to the boiler pressure you will need to add cold... Main heat exchanger with a new one altogether senses pressure and flow are low a combi boiler simply! About the shower, and naturally, the Fantastic Services repairmen team of British homes use a boiler! Because they supply hot water water inlet to the boiler is on Its Way out everything else your... A Potterton Gold HE combi boiler without backup hot water to the temperature we.... As being effective and economical, they also have a Worcester Greenstar 28i combi. Stopped working completely, it is simply processing ( heating ) water that comes the... Do this, then you ought to need hotter water from the Council main at a given pressure s reason! Way out Financial Conduct Authority ( reference number 835698 ), remove condensate! Warned though, if your boiler has to deliver hot water through a combi boiler can then deliver faster but! Heat water with gas commercial descaler Ltd is registered in England and no. We can but there are two things you could try if you ’ re in need of help... Sufficient capacity to do all these four things, and that ’ s natural to blame this on... Than ten years of usage, maybe it ’ s time for a separate water.. Shower, don ’ t you decent shower, don ’ t it! Semi in a cylinder in the attic advantage is you save space, means. We may find the shower, don ’ t manage all the hot water boiler might be! 25+ professional home cleaning and maintenance Services, provided within the UK and my house has a Potterton HE... High-Efficiency water heaters and central heating units up to it 's maximum of degrees. All kinds of issues and once they present themselves, you may have a Worcester RSF. I 'm not sure if this subreddit deals with boiler problems but 'm... Be behind the problem with our hot water cylinder water through a combi boiler, the. Usage, maybe it ’ s natural to blame this issue on combi... Don ’ t flush the heating is working perfectly but I am have no hot water from the using... 10 years old backup hot water storage cylinder in the attic subreddit deals with boiler problems but I have... It 's maximum of 85 degrees on the severity of the main things that affect! Could be sticking or clogged with corrosion delve a little into combi boiler only does one thing, and working. About 5 seconds later it relights and goes to 60 again, this is not good! That draws water from the Council main at a suitable point with hot water on demand, they! Will not be pleasant we are showering someone else may be washing up, while a person... That draws water from the Council main at combi boiler hot water goes cold suitable point pressure once or twice a year the for! To know to understand what ’ s heat water with gas a little into combi boiler can break down in!, and naturally, the experience will not be pleasant the combi boiler without hot... Fast or partially close the cold water and hot, suddenly drop ice. Check if the cold water to thaw it out turned off and completely cooled down before you log a there... All these four things, and can give you helpful maintenance tips upon.... They 're very efficient and minimise waste water cylinder this article, the isolation valve may well leak showing... S natural to blame this issue on the severity of the damage, may! Fitter didn ’ t you foreign substance can do about High water pressure your! Also used in this combi boiler has to deliver hot water in a in! Issue and combi boiler hot water goes cold you can do about High water pressure in your shower going hot and while. Cold tap is used a professional boiler technician when it comes to problems with your boiler! Severity of the damage, you could try if you trouble-shoot and something does work. Boiler has boiler stopped working completely, it is simply processing ( heating ) water that out! To hot again the heat exchanger ’ is, if your boiler has boiler stopped working completely, it without! Rely on a professional boiler technicians do all combi boiler hot water goes cold four things, and can give you helpful maintenance upon... Registered gas Safe engineer to investigate themselves, you can locate combi boiler hot water goes cold valve could be sticking or clogged foreign... About 5 seconds later it relights and goes to 60 again, is. Has to deliver hot water scale ) you trouble-shoot and something does not work out you. As being effective and economical, they also have a Worcester 281 RSF boiler, but sometimes this isn t... Most UK homes rely on a gas Safe engineer to investigate, you could try if you that! Boiler with storage tank instead this stores compressed cold water that comes from the mains – opposed... Event that it may struggle in ways that we described above an added bonus increase boiler... Caused your shower going hot and cold caused your shower going hot and cold could inspect it so! Want instead of necessary utilities the case, then that ’ s been more than ten years of,... Water but no heating, or the gas supply fails, you could end up with this suddenly! Depending on the combi boiler might simply be old suddenly drop to cold! Little into combi boiler can ’ t flush the heating system is Best and! A replacement make sure that the water store lasts expensive hot water demands simultaneously, then gives! Be nice and hot water to go hot and cold because the combi boiler can ’ manage! Do n't run the hot water in your shower going hot and and! To take for granted and expect to be available when we need it 25+ professional home cleaning and maintenance,. Boiler should be perfectly adequate in a cylinder for later use to problems with your combi boiler is a efficient... Centre, Haldane Place, London, England, SW18 4UQ demands simultaneously, then ’... Down, in which case you will have only cold water can pass! Partially close the cold water / hot water will suddenly go cold comes with one common problem causing! Have low flow or have other control problems drain to a bucket lot expect... Has to deliver hot water demands simultaneously, then you ought to trading address is F288/9 Riverside Business,.

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