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. Boiler water is circulated again and again. Hotter water might make the room heat up faster, but the eventual temperature will be the same. My hot water isn’t hot enough and I have a combi boiler. Turn the temperature of the tap control down a bit, then perform the thermometer test again. Finding the right temperature is a balance between being efficient and avoiding scalding, but there’s a third consideration, too – legionnaire’s disease. Then test the temperature again with a thermometer. Poking your finger into water flowing from the tap isn’t accurate. They may even drain the boiler is required. This will be higher than the other two. But there is a big difference between hot and swimming on the sun kind of temperatures aren’t there? I think this happens cause the water is too cold when it's coming into the boiler. Lukewarm water from a combination boiler, also known as "combi" boiler, can be a real pain for most people. Thermometers are easily available from cooking shops and baby & child shops. Water from boiler too hot? Water flowing too slowly over the heat exchanger could cause it to overheat, as could a faulty thermostat. Combi boiler temperature setting advice: Problem: Temperature dials on the boiler unit are too high. 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. The installer set the temperature to 55 degrees. Instead, it’s heated on demand from the mains as soon as a hot tap is opened. It’s also possible that your water is running too hot because of a mechanical or electric failure in your boiler or system. 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. 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. Let us help you find your nearest Ideal Recommended Installer. Is your hot water cycling hot and cold? Our hot water is too hot and I'm struggling to see how to turn it down. 4. Green Yorkshire acts as a credit broker (not as a lender) and offers credit products through Vendigo from a panel of lenders. Tap water too hot from combi. You might also be unable to alter things and return them to normal unless you shut the boiler off completely. 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. There could be a third control, which is the temperature of the circulating water, or pre-heat. You shouldn’t need to adjust these output temperatures as you may alter the boiler’s efficiency . Anyone know how to help? This type of pneumonia is caused by the Legionella bacteria, which thrives in water that’s between 20 °C and 45 °C. The immersion heater is off (never used) If the temperature is lower than your setting, and there are no timers in the “off” position, the cylinder will start warming up. The temperature setting on the cylinder might be visible, or it could be behind a panel. 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). Unlike lowering the temperature in a combi boiler, cylinders will take time to cool down if they are at maximum temperature already. If it’s a combi boiler, hot water goes directly from it to the taps. This provides the appropriate level needed for most cold weather temperatures. 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. So, let’s look at some of the common temperature problems with combi boilers and find out how to deal with them. 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. 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. 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. Keep making small adjustments until you’re happy with the temperature. They could be manual, i.e. The average setting for a gas-powered hot water boiler is 180°F. a dial that you physically rotate or a slider; or they could be controlled digitally, from a panel. Do you want to learn what might be causing it and how to fix it? 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. Open hot … Either way, you are best advised to contact a professional engineer to examine your combi boiler to see if they can diagnose the problem. A combi boiler only does one thing, and that’s heat water … Turn the hot tap on and leave it running for about 20 seconds, then fill a large glass. The water that comes from the tap has not been through the boiler. 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. A boiler like a bowl of porridge should have its temperature right in the middle. Combi boilers heat water on demand as and when needed. 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 your boiler it noticeably quite old or in poor condition then this could easily cause problems with the temperature. They work by heating water directly from the mains supply, so there is no need for a storage tank of any kind. 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. Well the house really got hot quickly and the rads were too hot to touch. 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. 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. Putting that debate aside, for now, we can conclude one thing which is that the flow rate is important. A combi boiler will need a flow rate of around 10 litres per minute, although some people argue it … 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. You’ll also need to specify what temperature you want your central heating at when it does come on. These control the output temperature for the radiators and the hot water temperature. 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. Many of the problems you encounter with gas boilers, you will not encounter with an electric one. It’s also possible that your water is running too hot because of a mechanical or electric failure in your boiler or system. 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. It will also be sure to be much more energy-efficient and safe as well. Combi boilers have some sort of control to set the temperatures. 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. 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. 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 have immersion heaters in your cylinder, they will have their own thermostats. Remember the message from Goldilocks I mentioned earlier? 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. You need to know how to get things just right. A room stat can also cause the water to get too hot, but is normally protected by a safety stat within the boiler. There are no hot and cold storage tanks or expansion tanks to worry about, so … The temperature your hot water should be set to depends on the type of system that you have. Your boiler being too hot might seem a little strange after all aren’t boilers supposed to be hot appliances? Then, dip in a thermometer to get the temperature. Similarly, the temperature of your radiators in not the same as your hot tap water temperature. A thermostat is essential to controlling the temperature of your combi boiler, so if it stops, you will need to call in a professional. Then turn it back on again and reduce the temperature to a cooler level to see if things change. 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. Combi Boiler won't maintain hot water temp. The boiler is on setting 5 of 7 (67 degrees) and the Hive thermostat is set to 21 degrees. Well, that is what we are going to look at when it comes to combi boilers. Applications are subject to affordability, application, status and lending criteria. In this article we’ll be dealing with bringing your water temperature down safely. 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? You can do this on the front of your boiler simply by following the instructions given. How much this repair will cost will really depend on what is causing the problems with the flow rate. 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! Fantastic. There may be two - one for hot water and one for central heating. Do you you need hotter water from your Combi boiler, especially on the kitchen sink? Repairing or replacing a thermostat is not something you should attempt to do on your own. Test again with the glass of water. After that, you may have a shower going hot and cold because the combi boiler can only pass on what it receives. 3. open tap more, luke warm water comes out, combi boiler comes on, water gets hot, beceomes a trickle and combi stops heating water. 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. The thingy on the tank is for the temperature of the water. 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). 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. No one wants to feel like they’re on fire or risk suffering burns when they’re taking a shower, do they? Yes, that is a strange way to open an article about the dangers of combi boilers being too hot but stick with me I am going somewhere with this. The room thermostat tells the boiler whether to pump water through the radiators or not. If they are set too hot, they will override the boiler-heated indirect water heating system. Combi boiler - hot water not very hot. 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? It then goes cold for a while, then heats up to the temerature I set on the boiler thermostat. 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. Get it fixed with our handy guide. Main Issue # 2: Your Combi Boiler is On Its Way Out. In the event that it gets stuck, you could end up with hot water but no heating, or vice versa. Vendigo’s lenders will do a credit assessment of your circumstances when you apply. 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. If you think your boiler is able to be repaired then take a look at some boiler cover plans here. If manually turning down the temperature doesn’t work, it’s time to call out a … However, it’s important to note that your boiler can’t operate in condensing mode for hot water… I just had a new Vaillant ecotec plus 831 combi boiler installed. Make sure you are using the right one when you want to change the temperature. Green Yorkshire is authorised and regulated by the Financial Conduct Authority (reference number 718973). The dial on the tank is at 60 degrees, but the water coming out of the tap is much hotter. Remember, a combi boiler heats water as and when it’s needed, so the results should be instant. You should be able to do it straight away. For heating systems that include a combi boiler, there could be an issue with the diverter valve. Check your manual for details, but you should be able to lower the temperature at one of these controls. Don’t confuse the temperature on your room thermostat with the water temperature – they are two different things. A system or conventional heat-only boiler feeds its water in pipes around the hot water cylinder, which warms up the fresh water inside. I have two very young children and worry about them turning on the hot … Everyone one saying the same too. Green Yorkshire Ltd provide finance via this website and is registered in England and Wales No 08430523 – VAT Number – GB178937935. Some models of combi boiler have two different temperature dials one for water and one for central heating. 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. Use our “Find an Installer” service to make your booking. What kind of boiler do you have? ... the boiler will have to work harder to raise the temperature. 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. You can buy a boiler online with Boiler Central. I have a Worcester Bosch combi boiler controlled by Hive wireless room thermostat. Forum Member. 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. For combi boilers, the recommended output temperature for the radiators is 75 °C and for the water it’s 60 °C. 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. Solution: Reduce the temperature to between 40-50 degrees Celcius. I'll … And of course, everyone is different what might be nice and relaxing for one person could be far too hot for another. 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. If manually turning down the temperature doesn’t work, it’s time to call out a Gas Safe engineer. This will lower the temperature of the water going through the radiators and your hot water tap. Although it’s quite rare, especially in water that is regularly changed, like in a cylinder, the risk should not be ignored. This is an issue that many combi boiler owners fall victim to. The boiler is a combi condensing boiler and the water comes in from the mains. Trading address is 100 Thornes Lane, Wakefield, WF2 7QX. Either way, you will have two separate controls: tap and radiator. If this doesn’t solve the problem, then you could have an issue with the dials or a more serious internal problem. 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? Don’t worry it likely isn’t just a case of really bad luck. 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. Have you ever read Goldilocks and The Three Bears? Now we need to know what type of boiler you have. The flow rate is set incorrectly. Setting the boiler controls on a Worcester combi boiler. If it is a cylinder stat, then the hot water only, will get too hot, where if the central heating is getting too hot, it will be the stat in connection with the boiler. There’s no right or wrong temperature for hot water from the taps. ... Saturday 13th January 2018. Fixing this issue is again, something that should only be done by a professional engineer. 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. As the source of central heating and hot water, a functional boiler is essential to any British home – particularly during the colder months. Well, I don’t think anyone will blame you for getting annoyed, but there could be a reason behind everything. 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 … 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. The combi boiler can then deliver faster, but only for as long as the water store lasts. Combi (or combination boilers if you want to get formal) are water heaters and central heating units combined into one appliance. However, combi boilers, despite being a more modern alternative, aren’t immune to problems. Have a look on the side of the hot water tank itself, not the boiler, and check to … 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. The hot water temperature control could be part of a digital readout or a knob on the front of the boiler unit. If you have a combi boiler, hot water isn’t heated and stored in advance in a cylinder. 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. Any interference in this process is highly likely to affect the water temperature. 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. Adjusting one should not adjust the other. ballybally Posts: 844. Note the temperature. 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 … When running the tap, the water seemed to get very hot - certainly too hot to put my hand in. Temperature drops and the cycle repeats. Step 4: No hot water in electric boilers. 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. I was impressed with this performance on a high temp, but wouldnt normally have it so hot. 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. 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. 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