Then turn it back on again and reduce the temperature to a cooler level to see if things change. 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 … We are discussing temperature problems so it’s likely no surprise that thermostats would be involved sooner or later. 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. 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? They may even drain the boiler is required. Note 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. For heating systems that include a combi boiler, there could be an issue with the diverter valve. Some models of combi boiler have two different temperature dials one for water and one for central heating. My hot water isn’t hot enough and I have a combi boiler. 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. Remote control devices are available, but for most people they are unnecessary as the temperature is probably adjusted rarely. Setting the boiler controls on a Worcester combi boiler. The installer set the temperature to 55 degrees. Temperature drops and the cycle repeats. There may be two - one for hot water and one for central heating. Do you want to learn what might be causing it and how to fix it? Main Issue # 2: Your Combi Boiler is On Its Way Out. 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. 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. But there is a big difference between hot and swimming on the sun kind of temperatures aren’t there? Putting that debate aside, for now, we can conclude one thing which is that the flow rate is important. You need to know how to get things just right. Fixing this issue is again, something that should only be done by a professional engineer. So, let’s look at some of the common temperature problems with combi boilers and find out how to deal with them. 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. Vendigo’s lenders will do a credit assessment of your circumstances when you apply. 4. They could be manual, i.e. Tap water too hot from combi. There’s no right or wrong temperature for hot water from the taps. Similarly, the temperature of your radiators in not the same as your hot tap water temperature. Make sure you are using the right one when you want to change the 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. Well, that is what we are going to look at when it comes to combi boilers. 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. Boiler water is circulated again and again. Water flowing too slowly over the heat exchanger could cause it to overheat, as could a faulty thermostat. Then test the temperature again with a thermometer. 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. 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. Don’t confuse the temperature on your room thermostat with the water temperature – they are two different things. No one wants to feel like they’re on fire or risk suffering burns when they’re taking a shower, do they? Anyone know how to help? I was impressed with this performance on a high temp, but wouldnt normally have it so hot. This will lower the temperature of the water going through the radiators and your hot water tap. After that, you may have a shower going hot and cold because the combi boiler can only pass on what it receives. 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. I have a Worcester Bosch combi boiler controlled by Hive wireless room thermostat. This will be higher than the other two. Water from boiler too hot? 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. The thingy on the tank is for the temperature of the water. If it’s digital, consult your boiler’s instructions to find the settings, but it should be quite straightforward. The immersion heater is off (never used) Although it’s quite rare, especially in water that is regularly changed, like in a cylinder, the risk should not be ignored. In this article we’ll be dealing with bringing your water temperature down safely. The flow rate is set incorrectly. The dial on the tank is at 60 degrees, but the water coming out of the tap is much hotter. 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. It’s also possible that your water is running too hot because of a mechanical or electric failure in your boiler or system. Everything seems OK so far, but I have a question relating to the hot water temperature. 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? 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. 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. 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. 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 … Everyone one saying the same too. Get it fixed with our handy guide. As the source of central heating and hot water, a functional boiler is essential to any British home – particularly during the colder months. Then, dip in a thermometer to get the temperature. Combi boilers have some sort of control to set the temperatures. It then goes cold for a while, then heats up to the temerature I set on the boiler thermostat. ballybally Posts: 844. If it’s a combi boiler, hot water goes directly from it to the taps. 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. If the problem persists, you'll need to call an expert. A boiler like a bowl of porridge should have its temperature right in the middle. a dial that you physically rotate or a slider; or they could be controlled digitally, from a panel. 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. Fantastic. Your boiler being too hot might seem a little strange after all aren’t boilers supposed to be hot appliances? If this doesn’t solve the problem, then you could have an issue with the dials or a more serious internal problem. The water that comes from the tap has not been through the boiler. A combi boiler will need a flow rate of around 10 litres per minute, although some people argue it … 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. Open hot … Let us help you find your nearest Ideal Recommended Installer. Water flowing too slowly over the heat exchanger could cause it to overheat, as could a faulty thermostat. You can do this on the front of your boiler simply by following the instructions given. Many of the problems you encounter with gas boilers, you will not encounter with an electric one. 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. No more hot showers to soothe those tired aching bones after a hard day of labouring. Is your hot water cycling hot and cold? 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. Well, I don’t think anyone will blame you for getting annoyed, but there could be a reason behind everything. Poking your finger into water flowing from the tap isn’t accurate. A pint glass or measuring jug are good – anything that won’t lose heat quickly. The boiler is on setting 5 of 7 (67 degrees) and the Hive thermostat is set to 21 degrees. ... Saturday 13th January 2018. To maximise efficiency, we recommend setting your radiator dial to 75 degrees and your hot water to 60 degrees. Forum Member. Check your manual for details, but you should be able to lower the temperature at one of these controls. 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 boiler - hot water not very hot. 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. I just had a new Vaillant ecotec plus 831 combi boiler installed. Once the cylinder reaches your desired temperature, the flow will be switched off. 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. You’ll also need to specify what temperature you want your central heating at when it does come on. Don’t worry it likely isn’t just a case of really bad luck. It will also be sure to be much more energy-efficient and safe as well. 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. Lukewarm water from a combination boiler, also known as "combi" boiler, can be a real pain for most people. In the event that it gets stuck, you could end up with hot water but no heating, or vice versa. 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. Green Yorkshire Ltd provide finance via this website and is registered in England and Wales No 08430523 – VAT Number – GB178937935. And of course, everyone is different what might be nice and relaxing for one person could be far too hot for another. Now we need to know what type of boiler you have. Thermometers are easily available from cooking shops and baby & child shops. Combi boiler temperature setting advice: Problem: Temperature dials on the boiler unit are too high. If you have immersion heaters in your cylinder, they will have their own thermostats. Turn the hot tap on and leave it running for about 20 seconds, then fill a large glass. Remember the message from Goldilocks I mentioned earlier? If you have a combi boiler, hot water isn’t heated and stored in advance in a cylinder. 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. 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). Either way, you are best advised to contact a professional engineer to examine your combi boiler to see if they can diagnose the problem. Our hot water is too hot and I'm struggling to see how to turn it down. The combi boiler can then deliver faster, but only for as long as the water store lasts. 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. How much this repair will cost will really depend on what is causing the problems with the flow rate. 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. 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. Test again with the glass of water. If your boiler it noticeably quite old or in poor condition then this could easily cause problems with the temperature. Well the house really got hot quickly and the rads were too hot to touch. Hotter water might make the room heat up faster, but the eventual temperature will be the same. Step 4: No hot water in electric boilers. When running the tap, the water seemed to get very hot - certainly too hot to put my hand in. 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. Finding the right temperature is a balance between being efficient and avoiding scalding, but there’s a third consideration, too – legionnaire’s disease. For combi boilers, the recommended output temperature for the radiators is 75 °C and for the water it’s 60 °C. Combi (or combination boilers if you want to get formal) are water heaters and central heating units combined into one appliance. There could be a third control, which is the temperature of the circulating water, or pre-heat. A room stat can also cause the water to get too hot, but is normally protected by a safety stat within the boiler. 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. 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. Instead, it’s heated on demand from the mains as soon as a hot tap is opened. This is an issue that many combi boiler owners fall victim to. However, it’s important to note that your boiler can’t operate in condensing mode for hot water… 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. Repairing or replacing a thermostat is not something you should attempt to do on your own. Trading address is 100 Thornes Lane, Wakefield, WF2 7QX. Either way, you will have two separate controls: tap and radiator. 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). The average setting for a gas-powered hot water boiler is 180°F. Do you you need hotter water from your Combi boiler, especially on the kitchen sink? 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. I have two very young children and worry about them turning on the hot … Green Yorkshire acts as a credit broker (not as a lender) and offers credit products through Vendigo from a panel of lenders. 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. 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