Some models of combi boiler have two different temperature dials one for water and one for central heating. I have two very young children and worry about them turning on the hot … In the event that it gets stuck, you could end up with hot water but no heating, or vice versa. 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. Setting the boiler controls on a Worcester combi boiler. You need to know how to get things just right. 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). 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. ... Saturday 13th January 2018. Note the temperature. However, it’s important to note that your boiler can’t operate in condensing mode for hot water… Combi (or combination boilers if you want to get formal) are water heaters and central heating units combined into one appliance. Finding the right temperature is a balance between being efficient and avoiding scalding, but there’s a third consideration, too – legionnaire’s disease. 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. Don’t worry it likely isn’t just a case of really bad luck. For combi boilers, the recommended output temperature for the radiators is 75 °C and for the water it’s 60 °C. Many of the problems you encounter with gas boilers, you will not encounter with an electric one. A thermostat is essential to controlling the temperature of your combi boiler, so if it stops, you will need to call in a professional. 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. 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. They may even drain the boiler is required. 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. 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. Unlike lowering the temperature in a combi boiler, cylinders will take time to cool down if they are at maximum temperature already. 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 … 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. 3. open tap more, luke warm water comes out, combi boiler comes on, water gets hot, beceomes a trickle and combi stops heating water. 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. Green Yorkshire Ltd provide finance via this website and is registered in England and Wales No 08430523 – VAT Number – GB178937935. ... the boiler will have to work harder to raise the temperature. 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 they are set too hot, they will override the boiler-heated indirect water heating system. It’s also possible that your water is running too hot because of a mechanical or electric failure in your boiler or system. Get it fixed with our handy guide. You’ll also need to specify what temperature you want your central heating at when it does come on. Any interference in this process is highly likely to affect the water temperature. The room thermostat tells the boiler whether to pump water through the radiators or not. 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. Water flowing too slowly over the heat exchanger could cause it to overheat, as could a faulty thermostat. 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