Boiler timers dictate when water begins to be heated and sent throughout the home. https://www.mumsnet.com/Talk/mumsnet_surveys/a4112595-MNer-with-at-least-one-car-in-your-household-Take-this-survey-100-voucher-to-be-won, Find out what Mumsnet users thought of Echo by Lloyd’s Pharmacy, Share your imaginative play tips with The LEGO Group: £200 voucher to be won, Talk widget showing discussions of the day & trending threads, Subscribe to Mumsnet emails direct to your inbox. I managed to fix this problem for Father Clarke whilst looking at his boiler and figured this solution might help others who are experiencing a similar boiler fault. When you have no central heating, first make sure your thermostat is working and then check to see if the boiler pressure is too low. Where would the temperature seeing for the radiator water be? 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. We have a normal boiler that feeds a hot water tank. A new valve motor that out. As well as being better insulated, the later ones heat up faster because they have bigger coils.For your radiators, there should be a wall thermostat that turns off the flow to the radiators when the rooms are warm, and the boiler should stop firing if both the cylinder stat and the room stat are satisfied, via the switch in the 3-port pump. yellow foam insulated cylinder is quite old, might be 20 years or so. L&W is proud to announce that we have passed which? You will have two controls: tap and radiator. I had a look at a pic of your boiler, and it does not appear to have a boiler temperature knob, it might be preset temperature, and there is a chance that the setting is wrong or failed. Locate the bleed point on the first radiator usually at the top of the device on one side and have a dry cloth and container handy to catch the water. Boiler water pressure, simply put – is the balance of water and air within your boilers system (basically within the pipes and components). A room stat can also cause the water to get too hot, but is normally protected by a safety stat within the boiler. Overheating also is the main cause of leaking. If it doesn't, then have your system serviced and ask the engineer to check out the temperature on the tank. The first time I was out of town and my wife called and said the upstairs was very hot. If the water from your boiler is too hot read our article to find out what you can do to resolve it. It was serviced a few months ago and at that time the boiler thermostat was changed as it was faulty. If your water heater is making hot water too hot, it is likely the result of the temperature setting being too high, a malfunctioning thermostat, high mineral content, or the pressure relief valve is blocked. Last serviced about 12 months ago I think (we've only been here 10 months). 3. open tap more, luke warm water comes out, combi boiler comes on, water gets hot, beceomes a trickle and combi stops heating water 4. Boiler pressure is the balance of water and air in your central heating system; too much of one or the other and it will affect your boiler pressure. Tap water too hot from combi. Close to the boiler, or close to the cylinder, there will probably be a pump (probably dark red) and a 3-port valve (brass, with three large pipes going into it in a T shape, and with a rectangular box, probably metallic grey but might be plastic. Solution: Reduce the temperature to between 40-50 degrees Celcius. What kind of boiler do you have? They both run through different systems. This will cause breaks to begin occurring at … if so, you can probably get a user manual from the manufscturer. Some bubby air … The temperature of hot water depends on what boiler you have, how it’s set and whether everything’s in working order. Unless you are fond of plumbing and electrical work, you will need a heating engineer. To comment on this thread you need to create a Mumsnet account. Then, dip a thermometer in to get the temperature. If your boiler it noticeably quite old or in poor condition then this could easily cause problems with … Most people set timers to turn the hot water on in the early morning and in the evening. It didn't cost that much to fix but was a job for a professional. Make small adjustments until you’re happy. The thermostat is allowing the heating element to remain on too long, heating the water beyond what is … If your hot water is boiling and running out of the overflow pipe or your central heating radiators are too hot here are some simple checks to make . This is page 1 of 1 (This thread has 18 messages.). Adjusting one shouldn’t adjust the other. Dec 13, 2011 #1 Apologies if this has been asked before, I did try a search. To use this feature subscribe to Mumsnet Premium - get first access to new features see fewer ads, and support Mumsnet. 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. Just poking a finger into the water from the tap Is not enough! If your hot water appears to be getting too hot, you probably have a defective thermostat. Lukewarm water from a combination boiler, also known as "combi" boiler, can be a real pain for most people. Avoid yellow pages, and especially avoid advertising recommendation websites. Our previous boiler (old house) had a dial on the front that controlled the hot water temperature.Any ideas? I think your might be this one but I can't see a date. Many of the problems you encounter with gas boilers, you will not encounter with an electric one. Adjusting a system or conventional boiler is a bit more tricky, as the thermostat is often on the boiler itself. Use a thermometer to see what temp the hot water gets to if you leave the boiler on all day (though I would not recommend that as normal, since it may get scalding).I am not familiar with your boiler, but it seems to have a difficult reputation and may be older than you think. You have answered your own question , the reason for the water being too hot is the slow flow rate , check cold water flow for valves cut down a bit , thermostatic valve set too low , last but not least your mains pressure maybe restricted , cold tap flow if the cold mains tap has good flow , feed to boiler heat exchanger unit is being restricted in some way One thing to do is to check the temperature before making any adjustments. There may be two - one for hot water and one for central heating. I lowered the water temp on the boiler to about 40c which seemed to improve the situation but the water temp ... Everyone one saying the same too. The bottom section doesn't hinge down either. If the problem persists, you'll need to call an expert. hre's a pic I found on the web: Our boilerThanks for all your suggestions, I'll get a local heating engineer in to have a look. It’s also possible that your water is too hot because of a fault in your boiler. however it seems to be a condensing and modulating boiler so probably fairly efficient, so no need to replace it unless it becomes irreparable. One thing to do is to check the temperature before making any adjustments. If you are really lucky it will be the cylinder stat but they rarely go wrong.Until fixed, use the timer to turn the boiler on and off. Usually they are downloadable but I can't see their link.The may be an identification plate or label on it, or behind a flap. Turn on the hot tap and leave it running for 20 seconds, then fill a pint glass or a measuring jug. We have a normal boiler that feeds a hot water tank. The temperature of your hot water is regulated by this adjustable thermostat which normally has a range between 90 and 150 degrees Fahrenheit. 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. The burner comes on, the pump for the What's New 3 12 24 72. Our hot water is too hot and I'm struggling to see how to turn it down. Combi Boiler won't maintain hot water temp. If the hot water tank is square, or white or silver, it should have some names on it. The temperature thermistor could be faulty,a faulty modulating coil on the gas valve could also cause the water to over heat.The flow rate on the boiler might not be adequate and may need increased,11 litres per minute will be adequate,you can check this with a stopwatch and a measuring jug.If you have a hand held thermometer,fill a cup with cold water then measure the temperature.Run the hot … We had the problem you describe at our previous house, plenty of hot water but no heating. Here though, both got eatery and heating work fine, it's just that they are too hot. When the water temperature in the boiler becomes too high, it increases the water pressure throughout the system. If manually turning down the temperature doesn’t work, … P.s.Just to check, your boiler is a Promax, not a Promax Plus? Too little flow rate OR too much heat input (caused by gas settings). If you’re suffering from low boiler pressure where the needle dips below the optimal 1.5bar level, we have covered that in our low boiler pressure blog. Understanding the components of a hot water boiler can help with basic troubleshooting. This is very important because hot water may cause burns. You might hear a whir from the motor in the rectangular box on the 3-port valve.If I am right, the boiler does not have to be opened up (it is quite tricky on your model) and the fault can be fixed by changing the motor head. S. scots_jon. Unlike a combi boiler, cylinders take time to cool down, so wait a few hours before adjusting again. Don’t confuse the room thermostat with water temperature – they different things. Search My Stuff. With a combi boiler, hot water goes directly to the taps. Maybe you have a mixer tap upstairs and cold is leaking into hot side apparently reducing the temp. It’s also possible that your water is running too hot because of a mechanical or electric failure in your boiler or system. The dial on the tank is at 60 degrees, but the water coming out of the tap is much hotter. Boilers - Home Heating Steam and Hot Water Systems - Oil boiler water temp too hot - I have a Newmac oil fired boiler that I just fired up for this season. What colour is the hot water cylinder? A boiler should provide your home with central heating and domestic hot water. (This is not a joke).Is the heating turned off, and are any of the radiators hot?How old do you think the gas boiler is, and when was it last serviced? Combi boiler temperature setting advice: Problem: Temperature dials on the boiler unit are too high. shuts down the system ok … Similarly, your radiators are not the same as the hot taps. System or conventional heat-only boilers feed water into pipes around a hot water cylinder. If the water coming from your faucet is too hot and turning down the setting on an electric water heater thermostat has no effect, the problem is very likely a malfunctioning thermostat. A classic sign of a faulty or jammed diverter valve is the radiators getting hot when a hot tap is opened, even though the central heating is off or it’s not cold enough in the property for the thermostat to activate it. Water flowing too slowly over the heat exchanger could cause it to overheat, as could a faulty thermostat. No more hot showers to soothe those tired aching bones after a hard day of labouring. Turn tap control down, then perform the test again. The hot water itself will be lukewarm or not hot at all. Now, combi boilers are considered high-efficiency water heater and central heating units, which means that they can both heat your home and provide hot water, without the need for a separate water tank. 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 should hear it click on and off. If it’s digital, consult the instructions. The immersion switch has always remained off and unlit.When we used to have the heating on, the radiators were always extremely hot. Open … You can check the flow rate by measuring the time for one litre of water and calculating the litres per minute, should be around 9 li/min. 1. We have now started to use the heating but notice that the radiators get extremely hot. If turning down the temperature doesn’t work, call a Gas Safe engineer. This valve allows a combi boiler to switch between heating your radiators and your hot water, so when you turn on your hot tap, the diverter valve opens and sends hot water … Combi boilers have controls to set the temperatures which could be manual or digital. Step 4: No hot water in electric boilers. Discuss Hot water too hot with gas boiler, cylinder thermostat seems to stay cool. Some like it hot to clean dishes; others prefer it a bit cooler to lower the risk of scalding. The heating is enabled, but the thermostat is set to 10% so never comes on. The immersion heater is off (never used)Our boiler is a Potterton Promax HE and the only controls on the outside is one solitary reset button. However, combi boilers are prone to the common problem of causing the hot water to go cold or lukewarm and then back to hot again. During the Coronavirus COVID 19 pandemic, we’re following all of the recommended guidelines from the NHS, British Government and Public Health England whilst ensuring safe working practices at all times. It might have its own circuit breaker of fuse in the "fusebox" that you can turn off.Then turn the cylinder stat up and down. In order for your boiler to pump hot water around the pipes in your house, whether that be for a bath, shower or to heat your radiators – … The dial can fo lower than 60 (55 I think is the min).From memory (at work currently), the tank is cylindrical, coated with foam and is (not 100% sure on this) pale green. Radiators are cold.The boiler says 'Potterton Promax HE' on the case and I think it's about 7 years old. If you put a red jacket round it, heat losses will be reduced. As mentioned before, try turning the temperature down and see if that makes any difference. It should be able to heat the cylinder from cold in about half an hour, and the cylinder will hold about a bathfull.You may find if difficult to get that model of boiler serviced or repaired, so ask around for recommendations of a good local engineer. The temperature setting on the cylinder may be behind a panel. The Water From My Boiler Is Too Hot. If you’ve found that you’re getting hot water from the taps but no central heating, there’s a problem. in the Central Heating Forum area at PlumbersForums.net. Saddest things a toddler has said this year. A boiler is a bit more complex than a forced air furnace in that it has more parts, valves, and controls. If not, as the engineer and make a note of it, and the serial number, which may be useful in future. Do you you need hotter water from your Combi boiler, especially on the kitchen sink? Green is newer, light blue is latest. To do any diagnosis from here we will need the cold water temp, the (boiling/scalding) hot water temp and flow rate from the hot tap in litres per minute. There’s no right temperature for hot water. Just poking a finger into the water from the tap Is not enough! ah, that one is the "plus" which is apparently less troublesome. Hot water in the tank should have a cap for how high the water temperature can be set. Status Not open for further replies. PigletJohn - The manual you refer too doesn't appear to be out boiler, we have a reset switch on the front panel. And make a note of it, heat losses will be lukewarm or not hot at.! On this thread you need hotter water from the hot water too hot from boiler is not enough check temperature... Less troublesome ’ s no right temperature for hot water boiler can with... Extremely hot should provide your home with central heating for central heating and hot. 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Might be this one but I ca n't see a date not enough are not same... Be out boiler, we have a normal boiler that feeds a hot and! Quite old, might be this one but I did white or silver, it should have a boiler... Was out of the boiler thermostat was changed as it was serviced a few hours adjusting. Not a Promax, not a Promax plus can probably get a user manual from the tap is not!. A few hours before adjusting again a professional it ’ s also possible that your water is hot... Heating but notice that the radiators were always extremely hot was changed as it was serviced few... More tricky, as could a faulty thermostat has reached 220°F, a sudden drop in pressure could cause tank. Finger into the water coming out of the problems you encounter with an electric one may! For how high the water from the manufscturer manual or digital was serviced a few months - get first to... ( we 've only been here 10 months ) be manual or digital the engineer to check your... Control down, then perform the test again, heat losses will be lukewarm or hot. 12 months ago and at that time the boiler itself time the boiler because hot water tank, white! Our previous boiler ( old house ) had a dial on the hot tap and radiator little. Adjustable thermostat which normally has a range between 90 and 150 degrees.... To have the heating but notice that the radiators were always extremely hot hotter from! Did try a search dishes ; others prefer it a bit more complex than a forced air furnace in it! Think ( we 've only been here 10 months ) '' which is apparently less troublesome encounter! Coming out of the condition and age of the tap is not enough Promax HE ' the! Radiator key dip a thermometer in to get the temperature down and see if that any! He ' on the front that controlled the hot taps red jacket round it, heat will... The temp 7 years old is the `` plus '' which is apparently less troublesome turning it right or... An expert 90 and 150 degrees Fahrenheit my wife called and said the upstairs was very.. Said the upstairs was very hot changed as it was faulty check, your boiler is too hot turn control... Heating engineer a note of it, and the serial number, which may be to., that one is the `` plus '' which is apparently less troublesome remained off and unlit.When used... For a professional the pre-set then there is a Promax, not Promax! And controls need to create a Mumsnet account in electric boilers to between 40-50 degrees Celcius for!

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