I just had a new Vaillant ecotec plus 831 combi boiler installed. You might also be unable to alter things and return them to normal unless you shut the boiler off completely. There may be two - one for hot water and one for central heating. A room stat can also cause the water to get too hot, but is normally protected by a safety stat within the boiler. Adjusting this will not have much of an effect on the hot water, as the boiler will always try to match the tap temperature you set. One thing that’s useful to do is to check the temperature before you make any adjustments, so you can compare it after any changes. Don’t worry it likely isn’t just a case of really bad luck. The hot water temperature control could be part of a digital readout or a knob on the front of the boiler unit. The water that comes from the tap has not been through the boiler. These control the output temperature for the radiators and the hot water temperature. A combi boiler will need a flow rate of around 10 litres per minute, although some people argue it … It then goes cold for a while, then heats up to the temerature I set on the boiler thermostat. This will be higher than the other two. Either way, you are best advised to contact a professional engineer to examine your combi boiler to see if they can diagnose the problem. The dial on the tank is at 60 degrees, but the water coming out of the tap is much hotter. The story has plenty of messages to it for one thing breaking into a bear family home and going to sleep is a bad idea! Once you’ve got your boiler running at the optimal temperature, you’ll want to set the timer for when you need heating the most. Domestic hot water flow rate: 10.2 litres per minute at 35 degree temperature rise (provided adequate mains water pressure is available) so it will be important to know how much hot water it delivers, and compare this with the cold water flow. If you can raise the temperature manually, do not set it any higher than 210°F (which is often the limit), and try to remain down at 190°F if you need the extra heat. If you have altered the temperature on the dials, but things still seem far too hot turn the boiler off and give things time to cool down. For heating systems that include a combi boiler, there could be an issue with the diverter valve. My hot water isn’t hot enough and I have a combi boiler. Adjusting one should not adjust the other. It will also be sure to be much more energy-efficient and safe as well. What you are doing here is telling the cylinder to start or stop the flow of hot water through the heat exchanger from the boiler. Vendigo’s lenders will do a credit assessment of your circumstances when you apply. Hi, I have a Baxi Combi Platinum HE boiler, and the hot water temperature to the hot taps fluctuates from hot (about 45 seconds) to luke warm (about 15 seconds) and then continues to cycle between hot and luke warm. Turning it down might make your boiler greener and cheaper to run, however, but if you have it too low, it will limit the temperature you can get from your taps. Thermometers are easily available from cooking shops and baby & child shops. How long it takes depends on how well your cylinder is insulated, but once a few hours have passed, or if the hot taps have been run a few times, the temperature should settle to your new setting. What kind of boiler do you have? You can do this on the front of your boiler simply by following the instructions given. The installer set the temperature to 55 degrees. Make sure you are using the right one when you want to change the temperature. If the temperature is lower than your setting, and there are no timers in the “off” position, the cylinder will start warming up. Test again with the glass of water. Everything seems OK so far, but I have a question relating to the hot water temperature. Trading address is 100 Thornes Lane, Wakefield, WF2 7QX. The temperature of your hot water depends on what kind of boiler you have, how it’s adjusted and whether everything’s in good working order. They work by heating water directly from the mains supply, so there is no need for a storage tank of any kind. Finding the right temperature is a balance between being efficient and avoiding scalding, but there’s a third consideration, too – legionnaire’s disease. Anyone know how to help? If this doesn’t solve the problem, then you could have an issue with the dials or a more serious internal problem. For combi boilers, the recommended output temperature for the radiators is 75 °C and for the water it’s 60 °C. There will be variations between models, but most Worcester combi boiler thermostats work on a principle of selecting the hours you want the radiators to be on from a 24 hour clock. ow to use your combi boiler eciently Advanced settings You can change the central heating flow temperature and hot water temperature of your heating system. Turn the temperature of the tap control down a bit, then perform the thermometer test again. Hotter water might make the room heat up faster, but the eventual temperature will be the same. We have a normal boiler that feeds a hot water tank. Yes, that is a strange way to open an article about the dangers of, It shouldn’t be too hot or too cold, and while a cold boiler likely means the, Well, that is what we are going to look at when it comes to, Combi (or combination boilers if you want to get formal) are water heaters and, So, let’s look at some of the common temperature problems with, Either way, you are best advised to contact a professional engineer to examine your, We are discussing temperature problems so it’s likely no surprise that, So, while we have looked at the most common issues that could be causing your. Do you want to learn what might be causing it and how to fix it? Now we need to know what type of boiler you have. Yes, a nice hot shower is supposed to be a great way to wake up, and a hot bath is a traditional way to relax after a stressful day. In the summer the hot water is hot all the time but in the winter the water runs hot and cold so you can't get a hot shower or a hot bath. There’s no right or wrong temperature for hot water from the taps. Although it’s quite rare, especially in water that is regularly changed, like in a cylinder, the risk should not be ignored. Check your manual for details, but you should be able to lower the temperature at one of these controls. Have a look on the side of the hot water tank itself, not the boiler, and check to … Setting the boiler controls on a Worcester combi boiler. You can buy a boiler online with Boiler Central. If your combi boiler’s flow rate is too slow and can’t even reach its minimum requirement, then it will often cause the water to heat more than it should. The thingy on the tank is for the temperature of the water. Repairing or replacing a thermostat is not something you should attempt to do on your own. Some people like it very hot so they can clean dishes with it; others prefer it to be a bit cooler so they lower the risk scalding and can fill a bath without needing much cold water. This is an issue that many combi boiler owners fall victim to. If the problem persists, you'll need to call an expert. Combi boilers provide heating and hot water on demand and the diverter valve directs the hot water to either the radiators or the hot water outlets. Combi boiler temperature setting advice: Problem: Temperature dials on the boiler unit are too high. Combi (or combination boilers if you want to get formal) are water heaters and central heating units combined into one appliance. Open hot … I have recently had a combi boiler put in, and whenever the hot tap is put on there is a really hot burst of water (too painful to use). Don’t confuse the temperature on your room thermostat with the water temperature – they are two different things. I was impressed with this performance on a high temp, but wouldnt normally have it so hot. Combi boilers heat water on demand as and when needed. Our hot water is too hot and I'm struggling to see how to turn it down. No more hot showers to soothe those tired aching bones after a hard day of labouring. To maximise efficiency, we recommend setting your radiator dial to 75 degrees and your hot water to 60 degrees. A combi boiler will need a flow rate of around 10 litres per minute, although some people argue it should be higher at around 12 litres per minute. An engineer will have to inspect the combi boiler first to see if they can diagnose what the problem is and then you’ll get a quote for repairs. Solution: Reduce the temperature to between 40-50 degrees Celcius. If you are unsure what is the optimum temperature is for your home, then it should be around 21 degrees which is a comfortable heat. The flow rate is set incorrectly. But aside from those dangers, it also teaches us the importance of getting things just right. This provides the appropriate level needed for most cold weather temperatures. If you are unsure what is the optimum temperature is for your home, then it should be around 21 degrees which is a comfortable heat. If you have a combi boiler, hot water isn’t heated and stored in advance in a cylinder. The boiler is a combi condensing boiler and the water comes in from the mains. Applications are subject to affordability, application, status and lending criteria. If your boiler keeps suffering from breakdowns, constant repressurising issues or getting too hot, then it will likely be because of a more serious problem. Forum Member. It is killed by temperatures above 60 °C, so health organisations like the HSE recommend that hot water should be stored at no less than 60 °C. If your boiler keeps suffering from breakdowns, Well, while you could cross your fingers and hope for the best after paying for another round of repairs, I would strongly recommend considering a replacement, It might seem like an expensive solution, but, With us, you don't pay a penny until after your boiler is installed & fully working , what is the optimum temperature is for your home, boiler repairs are expensive unless you have boiler cover, take a look at some boiler cover plans here. Water flowing too slowly over the heat exchanger could cause it to overheat, as could a faulty thermostat. They both run through different systems, and although your cylinder might be on the radiator system, the water that you wash with is refreshed constantly – it’s just warmed by separate loop circulating through the boiler. Then test the temperature again with a thermometer. Combi boilers have some sort of control to set the temperatures. Step 4: No hot water in electric boilers. Combi boiler - hot water not very hot. Water from boiler too hot? You shouldn’t need to adjust these output temperatures as you may alter the boiler’s efficiency . Instead, it’s heated on demand from the mains as soon as a hot tap is opened. In this article we’ll be dealing with bringing your water temperature down safely. How much this repair will cost will really depend on what is causing the problems with the flow rate. Adjusting the temperature of a system or conventional boiler can be a bit more tricky, as the thermostat and adjuster are often on the boiler itself. Well, while you could cross your fingers and hope for the best after paying for another round of repairs, I would strongly recommend considering a replacement combi boiler instead. Your boiler being too hot might seem a little strange after all aren’t boilers supposed to be hot appliances? ... Saturday 13th January 2018. Remember, a combi boiler heats water as and when it’s needed, so the results should be instant. But there is such a thing as too hot, especially when you consider that a boiler heats your home’s water supply as well. The temperature setting on the cylinder might be visible, or it could be behind a panel. They may even drain the boiler is required. When the boiler comes on in the morning, the radiators het hot and the temperature quickly reaches 20 degrees (one degree lower than that set on thermostat). Either way, you will have two separate controls: tap and radiator. Use our “Find an Installer” service to make your booking. Green Yorkshire Ltd provide finance via this website and is registered in England and Wales No 08430523 – VAT Number – GB178937935. After that, you may have a shower going hot and cold because the combi boiler can only pass on what it receives. Combi Boiler won't maintain hot water temp. This type of pneumonia is caused by the Legionella bacteria, which thrives in water that’s between 20 °C and 45 °C. You should be able to do it straight away. If I try to mix it with cold water it doesn't make a difference to the temperature, unless I turn the hot water right down, but then the pilot light in the boiler … It shouldn’t be too hot or too cold, and while a cold boiler likely means the boiler isn’t working or there is a boiler leak in the pipe somewhere what about it being too hot? I have two very young children and worry about them turning on the hot … Have you ever read Goldilocks and The Three Bears? There are no hot and cold storage tanks or expansion tanks to worry about, so … They could be manual, i.e. In the event that it gets stuck, you could end up with hot water but no heating, or vice versa. But there is a big difference between hot and swimming on the sun kind of temperatures aren’t there? 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 … You need to know how to get things just right. When running the tap, the water seemed to get very hot - certainly too hot to put my hand in. If it’s digital, consult your boiler’s instructions to find the settings, but it should be quite straightforward. It’s also possible that your water is running too hot because of a mechanical or electric failure in your boiler or system. Once the cylinder reaches your desired temperature, the flow will be switched off. Once you’ve located it, it could be a manual control (a knob, dial or a slot for a screwdriver) or digital. A combi boiler only does one thing, and that’s heat water … a dial that you physically rotate or a slider; or they could be controlled digitally, from a panel. Fixing this issue is again, something that should only be done by a professional engineer. No one wants to feel like they’re on fire or risk suffering burns when they’re taking a shower, do they? A pint glass or measuring jug are good – anything that won’t lose heat quickly. We are discussing temperature problems so it’s likely no surprise that thermostats would be involved sooner or later. Any interference in this process is highly likely to affect the water temperature. Main Issue # 2: Your Combi Boiler is On Its Way Out. The water might not be up to temperature, and if your hand is cold, the water will feel hotter than it would if your hand’s warm. ... the boiler will have to work harder to raise the temperature. Similarly, the temperature of your radiators in not the same as your hot tap water temperature. Many of the problems you encounter with gas boilers, you will not encounter with an electric one. I have a Worcester Bosch combi boiler controlled by Hive wireless room thermostat. And of course, everyone is different what might be nice and relaxing for one person could be far too hot for another. However, combi boilers, despite being a more modern alternative, aren’t immune to problems. This will lower the temperature of the water going through the radiators and your hot water tap. Let us help you find your nearest Ideal Recommended Installer. The settings for hot water is on the lowest on the boiler and when I run the hot water (anywhere in the house) the water becomes too hot. A thermostat suffering from problems could cause misreading’s in the temperature it might seem like things are nice and cool only for them to be incredibly hot when you touch them. Poking your finger into water flowing from the tap isn’t accurate. Thermostat faults (even simple ones) will still require experienced hands to fix so with this kind of problem you should always call in an engineer to assist. There are many high-quality combi boilers available and good bargains to find so if your boiler keeps suffering from an unbalanced temperature, why not just upgrade to a new model? I think this happens cause the water is too cold when it's coming into the boiler. 3. open tap more, luke warm water comes out, combi boiler comes on, water gets hot, beceomes a trickle and combi stops heating water. It might seem like an expensive solution, but boiler repairs are expensive unless you have boiler cover, especially if you have to keep getting the same issues patched up time and time again. Modern combi boilers are just perfect for not taking up a lot of space in the home, whilst giving you instant access to hot water and heating day or night – at a moment’s notice. Everyone one saying the same too. The combi boiler can then deliver faster, but only for as long as the water store lasts. Note the temperature. So, after the intial flow which will come from the resevoir in the boiler, you may find the water cooler than previously for a given rate of flow. Then, dip in a thermometer to get the temperature. However i have just had a new main combi installed on a property i rent out and we had the heating on 80C (its max) to see how it performed this aft. Well, I don’t think anyone will blame you for getting annoyed, but there could be a reason behind everything. The room thermostat tells the boiler whether to pump water through the radiators or not. While they are more reliable than gas boilers, they are not always perfect so from time to time electric boiler users can find themselves with no hot water. Lukewarm water from a combination boiler, also known as "combi" boiler, can be a real pain for most people. On the combi unit, you’ll find that you can set the temperature that the boiler should heat the water to before it’s circulated around the central heating system and delivered to the taps. So, let’s look at some of the common temperature problems with combi boilers and find out how to deal with them. Turn the hot tap on and leave it running for about 20 seconds, then fill a large glass. The immersion heater is off (never used) The boiler is on setting 5 of 7 (67 degrees) and the Hive thermostat is set to 21 degrees. If you have immersion heaters in your cylinder, they will have their own thermostats. Green Yorkshire is authorised and regulated by the Financial Conduct Authority (reference number 718973). A boiler like a bowl of porridge should have its temperature right in the middle. Then turn it back on again and reduce the temperature to a cooler level to see if things change. If they are set too hot, they will override the boiler-heated indirect water heating system. Fantastic. You’ll also need to specify what temperature you want your central heating at when it does come on. Credit is subject to age and status and is available to UK residents with a bank account in the UK aged 18 and over who have not been declared bankrupt of had CCJ or an IVA within the last 6 years. Do you you need hotter water from your Combi boiler, especially on the kitchen sink? 4. Green Yorkshire acts as a credit broker (not as a lender) and offers credit products through Vendigo from a panel of lenders. Boiler water is circulated again and again. Well the house really got hot quickly and the rads were too hot to touch. The average setting for a gas-powered hot water boiler is 180°F. A system or conventional heat-only boiler feeds its water in pipes around the hot water cylinder, which warms up the fresh water inside. Combi boilers are also much smaller than a conventional boiler because of this design change and are often the boiler of choice for the more modern household. If you are experiencing an issue with your boiler, this guide to common boiler problems may help you diagnose the issue before reaching for the Yellow Pages and calling in outside help for an expensive emergency service. The temperature your hot water should be set to depends on the type of system that you have. Again, the effect will not be instant – you need to wait for the water to cool down, or you can empty the tank’s hot water by turning on a hot tap. If manually turning down the temperature doesn’t work, it’s time to call out a … If your boiler it noticeably quite old or in poor condition then this could easily cause problems with the temperature. If it’s a combi boiler, hot water goes directly from it to the taps. Putting that debate aside, for now, we can conclude one thing which is that the flow rate is important. Unlike lowering the temperature in a combi boiler, cylinders will take time to cool down if they are at maximum temperature already. Keep making small adjustments until you’re happy with the temperature. I'll … So, while we have looked at the most common issues that could be causing your combi boiler to get too hot what should you do if the problems keep happening even after professional repairs have been carried out? Remember the message from Goldilocks I mentioned earlier? If manually turning down the temperature doesn’t work, it’s time to call out a Gas Safe engineer. Get it fixed with our handy guide. Some models of combi boiler have two different temperature dials one for water and one for central heating. Well, that is what we are going to look at when it comes to combi boilers. As the source of central heating and hot water, a functional boiler is essential to any British home – particularly during the colder months. A thermostat is essential to controlling the temperature of your combi boiler, so if it stops, you will need to call in a professional. If you think your boiler is able to be repaired then take a look at some boiler cover plans here. Tap water too hot from combi. 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