If this doesn’t solve the problem, then you could have an issue with the dials or a more serious internal problem. 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. No one wants to feel like they’re on fire or risk suffering burns when they’re taking a shower, do they? Thermometers are easily available from cooking shops and baby & child shops. Combi boiler - hot water not very 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. 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. 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. Boiler water is circulated again and again. This type of pneumonia is caused by the Legionella bacteria, which thrives in water that’s between 20 °C and 45 °C. The dial on the tank is at 60 degrees, but the water coming out of the tap is much hotter. Hotter water might make the room heat up faster, but the eventual temperature will be the same. 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. Some models of combi boiler have two different temperature dials one for water and one for central heating. Everyone one saying the same too. Similarly, the temperature of your radiators in not the same as your hot tap water temperature. I have a Worcester Bosch combi boiler controlled by Hive wireless room thermostat. 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. 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. You’ll also need to specify what temperature you want your central heating at when it does come on. 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. Either way, you are best advised to contact a professional engineer to examine your combi boiler to see if they can diagnose the problem. As the source of central heating and hot water, a functional boiler is essential to any British home – particularly during the colder months. I think this happens cause the water is too cold when it's coming into the boiler. Everything seems OK so far, but I have a question relating to the hot water temperature. When running the tap, the water seemed to get very hot - certainly too hot to put my hand in. 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. And of course, everyone is different what might be nice and relaxing for one person could be far too hot for another. 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). But there is such a thing as too hot, especially when you consider that a boiler heats your home’s water supply as well. If the problem persists, you'll need to call an expert. A room stat can also cause the water to get too hot, but is normally protected by a safety stat within 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? A system or conventional heat-only boiler feeds its water in pipes around the hot water cylinder, which warms up the fresh water inside. Then turn it back on again and reduce the temperature to a cooler level to see if things change. The room thermostat tells the boiler whether to pump water through the radiators or not. The hot water temperature control could be part of a digital readout or a knob on the front of the boiler unit. What kind of boiler do you have? 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. Open hot … ballybally Posts: 844. The temperature setting on the cylinder might be visible, or it could be behind a panel. Don’t worry it likely isn’t just a case of really bad luck. Solution: Reduce the temperature to between 40-50 degrees Celcius. The installer set the temperature to 55 degrees. The combi boiler can then deliver faster, but only for as long as the water store lasts. 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. Green Yorkshire acts as a credit broker (not as a lender) and offers credit products through Vendigo from a panel of lenders. Don’t confuse the temperature on your room thermostat with the water temperature – they are two different things. You can buy a boiler online with Boiler Central. Remember the message from Goldilocks I mentioned earlier? You might also be unable to alter things and return them to normal unless you shut the boiler off completely. Finding the right temperature is a balance between being efficient and avoiding scalding, but there’s a third consideration, too – legionnaire’s disease. Combi boilers have some sort of control to set the temperatures. Well, I don’t think anyone will blame you for getting annoyed, but there could be a reason behind everything. The average setting for a gas-powered hot water boiler is 180°F. A thermostat is essential to controlling the temperature of your combi boiler, so if it stops, you will need to call in a professional. 4. Many of the problems you encounter with gas boilers, you will not encounter with an electric one. 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. No more hot showers to soothe those tired aching bones after a hard day of labouring. Water from boiler too hot? 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. 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. Remember, a combi boiler heats water as and when it’s needed, so the results should be instant. Is your hot water cycling hot and cold? But aside from those dangers, it also teaches us the importance of getting things just right. Main Issue # 2: Your Combi Boiler is On Its Way Out. Let us help you find your nearest Ideal Recommended Installer. 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. Have you ever read Goldilocks and The Three Bears? A combi boiler will need a flow rate of around 10 litres per minute, although some people argue it … 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. 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. Well, that is what we are going to look at when it comes to combi boilers. 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. It then goes cold for a while, then heats up to the temerature I set on the boiler thermostat. A boiler like a bowl of porridge should have its temperature right in the middle. 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'll … 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. 3. open tap more, luke warm water comes out, combi boiler comes on, water gets hot, beceomes a trickle and combi stops heating water. Once you’ve located it, it could be a manual control (a knob, dial or a slot for a screwdriver) or digital. How much this repair will cost will really depend on what is causing the problems with the flow rate. 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. They could be manual, i.e. You might need to remove a cover to access the thermostat, and it’s often one that you adjust with a screwdriver. Remote control devices are available, but for most people they are unnecessary as the temperature is probably adjusted rarely. Although it’s quite rare, especially in water that is regularly changed, like in a cylinder, the risk should not be ignored. 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. However, combi boilers, despite being a more modern alternative, aren’t immune to problems. 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. Then, dip in a thermometer to get the temperature. The temperature your hot water should be set to depends on the type of system that you have. Note the temperature. Water flowing too slowly over the heat exchanger could cause it to overheat, as could a faulty thermostat. Adjusting one should not adjust the other. This will be higher than the other two. After that, you may have a shower going hot and cold because the combi boiler can only pass on what it receives. Temperature drops and the cycle repeats. Anyone know how to help? You shouldn’t need to adjust these output temperatures as you may alter the boiler’s efficiency . Fixing this issue is again, something that should only be done by a professional engineer. 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. Forum Member. Instead, it’s heated on demand from the mains as soon as a hot tap is opened. So, let’s look at some of the common temperature problems with combi boilers and find out how to deal with them. Have a look on the side of the hot water tank itself, not the boiler, and check to … Water flowing too slowly over the heat exchanger could cause it to overheat, as could a faulty thermostat. Unlike lowering the temperature in a combi boiler, cylinders will take time to cool down if they are at maximum temperature already. Check your manual for details, but you should be able to lower the temperature at one of these controls. Green Yorkshire Ltd provide finance via this website and is registered in England and Wales No 08430523 – VAT Number – GB178937935. Now we need to know what type of boiler you have. 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. It’s also possible that your water is running too hot because of a mechanical or electric failure in your boiler or system. If it’s a combi boiler, hot water goes directly from it to the taps. Combi boiler temperature setting advice: Problem: Temperature dials on the boiler unit are too high. If you have a combi boiler, hot water isn’t heated and stored in advance in a cylinder. They may even drain the boiler is required. I have two very young children and worry about them turning on the hot … 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. a dial that you physically rotate or a slider; or they could be controlled digitally, from a panel. ... the boiler will have to work harder to raise the temperature. You should be able to do it straight away. 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 pint glass or measuring jug are good – anything that won’t lose heat quickly. If manually turning down the temperature doesn’t work, it’s time to call out a … Setting the boiler controls on a Worcester combi boiler. These control the output temperature for the radiators and the hot water temperature. If you think your boiler is able to be repaired then take a look at some boiler cover plans here. To maximise efficiency, we recommend setting your radiator dial to 75 degrees and your hot water to 60 degrees. 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. 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? Get it fixed with our handy guide. Make sure you are using the right one when you want to change the temperature. For combi boilers, the recommended output temperature for the radiators is 75 °C and for the water it’s 60 °C. If manually turning down the temperature doesn’t work, it’s time to call out a Gas Safe engineer. Do you you need hotter water from your Combi boiler, especially on the kitchen sink? 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. 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 immersion heater is off (never used) 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 … If they are set too hot, they will override the boiler-heated indirect water heating system. 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. 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. 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 … Turn the temperature of the tap control down a bit, then perform the thermometer test again. 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