If your boiler is like this, then I can see it having problems with a thermostatic mixer: 1. I turn CH off, push reset, then turn on the hot water just to get the boiler to kick in. Relevance. Can someone give me a bit of advice regarding my Worcester Bosch 24i boiler. The boiler fires up its oil burner, and then a pump inside the boiler begins pushing water through the heat exchanger. Repeat from 1. It will fire up and run for about a minute and then cut off for a few seconds and then fire back up. etc. If the old boiler was doing the exact same thing as the new boiler then the boiler is not the fault.It is possible that you have some kind of blockage in the radiator pipe work.The boiler is not getting rid of the heat as there is no circulation,that would explain why it fires up for a minute then shuts down. The Fix: The diaphragm washer can be replaced using a service kit. I have a ravenheat rsf 100ET combi boiler . Anyone in that case would wonder as to why the boiler makes banging noise when firing up. Thanks for the help. ... empty what you think may be a boiler full of water out, then open up the bleed valve on the radiator nearest to the boiler. Every time we turn the hot water tap on, it fires up and gives us hot water for about 20 seconds, then the boiler starts banging and cuts out. The temperature shown on the boiler display very quickly drops back to the 30 or so degree level where the boiler cuts in again. In the past, they were the most used boiler, and back boilers can be quite messy when taking them out and replacing with a combi boiler. Can you suggest some simplified ways at maybe been able to fix this problem thanks The hot water and radiators are all working fine at the moment. 3. 10 years ago. Need to know the cost of a new boiler, quick? My Ferroli Modena 80E combi boiler fires up, then a few seconds later switches off. Below are common causes of a combi boiler producing water that's too hot. Favorite Answer. It keeps doin this for a good few times b4 it finally fires up. The boiler doesnt short cycle when it is warming up from a cold start- it only does this when the system is at temperature- the power dial is set to maximum so wasnt sure whether it was just putting a little extra heat in to keep it ticking over. Has anyone had a similar problem? If this light keeps going out there could be a faulty thermocouple that is cutting off the gas supply. I notice that the oustide of the boiler gets quite hot as well. Combi Boiler Problem. That gas is then ignited by the pilot light and the jet flames heat up a “heat exchanger”. Hi My Sabre combi boiler (less than a year old) cut out last night, and I have no hot water or heating. Hi I have a firebird 90 boiler and when I switch it on the burner keeps tryin to fire up but cuts out again after a second or two. Baxi Its range of EcoBlue, Duo-tec, Megaflow and Platinum combi boilers come in sizes to suit almost any size and type of home, and they range in price between £650 and £1,200. I recently had a water leak in my house, so i had to turn off the mains and drain the system. This then sends an electrical signal to the pcb. when the hot water runs it fires up and then cuts out almost immediatly , and cycles firing then closing , it has run for a 30 seconds but then starts cycli … read more If it is below this, then the boiler pressure is too low, this is resolved by topping up the boiler; To find out the way to do this for your boiler, you will need to consult your boiler manual. This could be a problem with your boiler, it could be your system is gunked up, or it could be your thermostat commanding the heating system to turn on and off. 4. The status indicator light is on red; I reset the boiler, it fires up for a few seconds, the light is green, then it cuts of and the light stays red. If your Baxi 105e combi boiler is failing to provide you with hot water, or the water is only heating up when the central heating is turned on, it could be a problem with your diaphragm washer. With the h … read more The hot tap at the sink and wash basin is very very hot but when taking a shower the boiler cuts in and out. That heat exchanger then … The pointer needs to be in the green section, if your boiler isn’t colour coded, then the pressure needs to be between 1 – 1.5 Bar. If you require removal of your back boiler and would like to convert to one of the latest, energy-efficient combi boiler then get a fixed price on a new boiler now. However, as the pressure drops, the boiler switches off and stops heating the water. Anyway my daughter’s boiler would fire up and go for about 20 seconds then cut out. On inspection it repeatedly fires up when temperature on boiler shows a little over 30 degrees, runs for perhaps 10 seconds that raises the temperature to over 70 degrees and then cuts out. It stays alight for about 2-3 mins and then turns off. Boiler fires up and starts producing very hot water. I then tightened it again and once I did this the boiler started firing up again. IS YOUR boiler making a loud banging noise? Your boiler is firing up so the fan and air pressure switch are operating correctly. Same with the reset button nothing is happening. So then I 'fool' it. I can hear water spitting for a couple of seconds. Water too cold, mixer increases flow of hot water. A noisy boiler is often caused by “Kettling”, which is a build up of limescale in the heat exchanger. Answer Save. Boiler cuts out when having a shower and water goes very cold, doesn't always fire back up though shower still on Replaced shower as thought it was thermostat - makes no difference. Read our Alpha combi boiler reviews to find out what expert heating engineers, and its own customers, make of the brand. It was sort of an intermittent fault that’s been happening for over a year at least. The mess caused by the back boiler conversion is temporary, and the installer/s will clean most of it up for you. I tried the same thing as earlier in the week and nothing is happening. Sometimes boilder doesn't kick in at all and have to turn on upstairs tap first to draw hot water through then … 1 Answer. Water too hot, mixer reduces flow of hot water. They then gave up and called Ideal out for a joint visit. Also when the boiler fires up I … If I leave a hot water tap running slowly it stays on. ... the voltage jumps and the boiler detects this as unnaturally cold and cuts out. Ideal classic boiler cuts out after 2 mins? When I run a hot tap the combi boiler fires up and heats the water. It can stay on for up to three hours, but generally cuts out after an hour or two. If that's happening then the water flow from another tap/shower might not be enough to keep the boiler firing. When I turned on the mains again, our boiler, an Ideal Classic LX FF will not keep turned on. Our boiler fires up fine and works for about 15 mins, then it starts cutting out. Thank you. Then after a minute of hot water running, getting the temp up to 50, then I turn CH on and it seems to stick for a bit. 12:03 pm ... Combi condenser boilers are not to be trifled with for that reason. Banging, gurgling, rumbling or whistling pipes can be caused by a build up of limescale or air in the system. Ideal man turned up, cover off, ran the hot water and stuck his hand in to feel the plate. However, today, the boiler is again not firing up. Ricardo. What is the fault likely to be on worcester 24i combi boiler? 2. You can get a back boiler replacement for as little as £17 per month. Doesn't do it every time and no pattern to when it happens, but about 1/3 fire ups are a problem. With the photocell out, the boiler fires up but then cuts out as you'd expect. The oil now in the plastic viewing tube is on the "need to top up" marker which, I presume, might explain why there's enough oil in the system to fire the boiler up, but not enough to keep it going, hence the boiler fires for 30 seconds and then cuts out again. Older boilers may have a permanent pilot light which needs to stay lit in order to light the larger burner within your boiler. Alternatively, there could be a deposit build-up or a draught blowing the light out. Then a thimble full of water. I tried ringing a few local plumbers and they are not able to come out until Monday. In the 1960s, it started getting popularity; in the 1970’s and 1980s, it was able to get to its highest success. The reset button works in this scenario as expected. When the hot water tap is switched on, the boiler fires up for 5 seconds then cuts out for 5 seconds then fires up for 5 etc. I do have a bowl underneath to catch any water, I thought the rubber seal at the top of the central plastic pipe might be not sealing properly. I also have this, no leak until the boiler fires up. Yeah with the photocell in, and running without my interference, then the boiler attempts to fire over and over but never cuts out. Just re-read my initial post and it was slightly wrong- the zone valves are on the flow from the boiler not to the boiler. My money would be the boiler and not the thermostat, but you could take the communication wires out of the thermostat and twist them together for awhile to see if your boiler stays on. Whether you have a combo boiler or a gas boiler, making sure it is working efficiently will save you money and stop you from being freezing in … Water too cold for a bath. I am worried there is an underlying issue and things may suddenly give up. The shower is not so noticible as it's thermostatic and the boiler fires up again before it gets too cold. If this signal is not reaching the pcb your boiler will switch … You see, during normal operation, when a gas boiler receives the call for heat, the gas valve opens and releases a small amount of gas into a sealed combustion chamber via small “jets”. If your boiler is old and in-efficient, you should probably consider a new boiler installation. Hi We have a Halsted Finest Gold Combi Boiler. Common Fault 5: Baxi 105e combi boiler – no hot water. Well, there can be two reasons to this- If your boiler makes a single BANG only when it fires up, it’s most likely […] Then it fires up then it turns off again. etc. I've recently had a new Combi Boiler fitted (Worcester Greenstar 25SI Compact) to replace an ~18 year old British Gas C1 that failed and currently I'm not overly impressed. Boiler shuts down and water turns cold. If I press reset it does nothing. 5. When our old, normal boiler fires up, it messes up the DAB radio in the kitchen for a second or two. When I turn the kitchen hot tap on, I can have the water running for up to 30 seconds before the boiler fires … When the boiler fires up the flame sensor has to detect a flame. What to do: By bleeding your radiator or power flushing your pipes, you can remove limescaleand air from your system. A loud banging noise coming out of a boiler is surely a matter of concern. Find out what replacement you need along with costs (takes 60 seconds). My combi boiler has begun making a tremendous thumping noise when it fires up. That gas is then ignited by the pilot light which needs to stay in. Before it gets too cold by a build up of limescale or air in the heat.! Boilers may have a permanent pilot light which needs to stay lit in order to light the larger within. 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