Alternatively, there could be a deposit build-up or a draught blowing the light out. I'm experiencing repeated lockouts on hot... Hi, hoping somebody can help me with my boiler problem. If not, a trained engineer will be able to help you with this. Combi boiler keeps cutting out when hot tap running. This is a blocked hot water heater exchanger This site uses cookies. tradesmen. Combi boilers are designed to offer a rise in temperature depending on the flow rate passing through the boiler. If the gauge has dropped below 1 bar, the water pressure will need to be topped up. < Back to guides Boiler Pressure. This should be at a setting of around 1 bar whilst the heating is off. Do you you need hotter water from your Combi boiler, especially on the kitchen sink? 90 months. This won't stop it, as the plate is blocked on the system side. I did some more... Boiler lockout on hot water demand (Potterton Combi 100) - CH working fine The thermostat is set to 20 degrees and the flame indicator actually goes out when the temperature reaches 19.5 degrees. Does your washer machine have a cold and hot inlet, or just cold? Discussion. Thanks for the info guys and sorry for taking so long to reply, just got married so things have been busy! A boiler with a coil system heats water passing through the coil on demand and warms the home by releasing heat into the air though vents; forced air is also the method by which a traditional furnace heats a home. The boiler is heating the water, then the water leaving the boiler gets too hot so the boiler shuts down until water leaving the boiler is cool again, and then cycles. Hot tap running cold when cold tap is on! As more hot water outlets are used, both the flow and temperature will be shared between the channels. This combi boiler shows it is on (there is demand for heat from it) but the hot water tap only receives brief spells of luke warm water. Privacy notice If your boiler is an all-in-one combi boiler and it is turning itself on and off every now and again, this is likely to be what is called its ‘Pre-heat’ function. 1 of 2 Go to page. Reply Reply Author. If this light keeps going out there could be a faulty thermocouple that is cutting off the gas supply. Discuss Evil combi boiler, hot water cutting out in the Central Heating Forum area at PlumbersForums.net. If you fall within this category you can use our ‘Find a boiler’ tool to … Terms and conditions Check if the pipe from the pump is getting hot. If you have a pressurized system, you may notice that it keeps losing pressure. Combi boiler cutting out continuously when running hot water I have changed the shower assuming that was the... © 2008-2020 MyBuilder Limited the problem started when i drained the system to replace a washing machine tap that was leaking.i do remember a gluging sound in the pipeworkd as the last of the water drained out. One of the key attractions of a combi boiler is that no separate water heater is required. It’s literally warming up so it can spring into action when you turn on the tap or heating. Hi Click here to find out more on how BOXT is helping to prevent the spread of COVID-19. The boiler initially cut out after a while of running hot water, running two tabs or the central heating at the same time. A steam boiler creates steam and circulates it via pipes to a radiator, while a water boiler sends hot water to baseboard radiators or specially designed systems under floors. If there is air in your central heating system, then your boiler may shut down. Luckily, most of the time you don’t need to be a trained engineer to notice when your combi boiler pressure is out of whack. I have to push it back in for up to 2 mins at a time in the hope it restarts. A boiler with a coil system heats water passing through the coil on demand and warms the home by releasing heat into the air though vents; forced air is also the method by which a traditional furnace heats a home. Then the thermal cut detects its over heating and shuts the boiler down. Shutting off on hot water demand isn't good. If there is air in your central heating system, then your boiler may shut down. Feb 26, 2013 #1 Hi, I hope somebody can give me a clue, although I stress I have no intention of trying to fiddle with the boiler myself! Wednesday 10th January 2018. You can confirm it’s a problem with the condensate pipe by pressing the reset button and when the boiler fires up, it should make gurgling noises before cutting out again. Limescale or sludge building up on your boiler’s heat exchanger can cause the boiler to make some strange noises which is known as kettling. Cookies If not, a trained engineer will be able to help you with this. ), Free Shipping for Loyal Forum Members - CLICK HERE. vescaegg. If your boiler isn’t receiving enough water to heat, then this could cause the boiler to turn off. An orange light will also display. Need to know the cost of a new boiler, quick? Boiler fires up and we get some hot water, then it just cuts out. 1; 2; Next. It essentially means that your boiler’s heat exchanger (the part that actually heats the water) is too hot. Below are common causes of a combi boiler producing water that's too hot. Always take extra care and ensure you don’t touch internal components and pipes. Shutting off on hot water demand isn't good. It essentially means that your boiler’s heat exchanger (the part that actually heats the water) is too hot. Vokera Flowmatic boilers: no hot water. Sounds like a thermistor would be first port of call. It sounds like it's a modulating combi boiler and it's not modulating. it has been a problem since installation what can be done to make it safe. The boiler is heating the water, then the water leaving the boiler gets too hot so the boiler shuts down until water leaving the boiler is cool again, and then cycles. This could be caused by a water leak, or a problem with the expansion vessel. + In Winter, your condensate pipe may freeze and become blocked. What to do: You may be able to re-pressurize your boiler yourself, by following the instructions in your boiler manual. If you’re finding that your combination boiler keeps tripping the RCD switch on your fuse board and tripping the electricity, it could be a sign of a fault or leak within your boiler system. The worst-case scenario for a boiler that cuts out is a faulty pump. 120 I suppose you could call it hot but i could hold my hand under it without pulling it away. D. daisydogbear. An uncomfortable or even hazardous water temperature isn't the only issue. If the boiler is in CH mode boiler will firer up and run, However if the pump is not circulating the hot water provided, water becomes hotter and hotter. The hot water in our shower / bath intermittently cuts out. This is a common fault with Ideal Response combi boilers, and you can usually identify it when you hear the boiler sparking and attempting to light three times before going into boiler lockout. One of the key attractions of a combi boiler is that no separate water heater is required. If you are running the water slowly then its likely that the temprature of the water is exceeding what the boiler will allow and if it cannot modulate then the only thing it can do is shut off to protect the boiler from actually boiling and you lot from scalds from very hot water. A blocked or frozen water pipe will stop the flow of water to your boiler and can cause it to turn off. Few minutes later it will light itself up again and we get another short burst of hot water. UK VAT Registered: 850 4121 63. Could be the thermostat, as you suggest, but not likely. The boiler recognises this and displays a fault code. The pump is usually in the airing cupboard and … More often than not, an error code will be displayed on the digital display to help you find out what’s wrong with the unit. Symptoms like these are usually signs of a blockage in the hot water heat exchanger in the boiler. If your boiler isn’t receiving enough water to heat, then this could cause the boiler to turn off. Common causes of hot water but no heating include broken diaphragms and airlocks or a failure of the motorised valves. One solution is to turn DOWN the required temperature of the water. The hot water provided by this device is at a higher flow rate than most combi boilers mentioned in this list with 95% efficiency. sounds like your pump isnt moving your water so your boiler is cutting off to avoid overheating. It’s important to remember that if handled the wrong way, a boiler can be a dangerous appliance. A safety feature designed to prevent boilers from overheating will force the appliance to shut itself down in these instances, as the pump’s job is to move a steady supply of hot water throughout your home – if it is failing to do this, the hot water will stay put in the boiler. Maybe a dodgy diverter valve, does the boiler heat the water ok when the heating is on? 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. Air in the system. Fault 5: Boiler cutting out, ‘chugging’ sounds If your boiler is cutting out, or going into lock-out whilst making sounds like it’s chugging or gasping for air , it may simply need a service. In a gas combi boiler, the word ‘combi’ is short for ‘combination’. When the boiler is operating, the gauge will usually rise to 1.5 bar or more. Video showing the problem with our hot water through a combi boiler. When the boiler is operating, the gauge will usually rise to 1.5 bar or more. Heat exchangers are also used in this combi boiler. 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. In a gas combi boiler, the word ‘combi’ is short for ‘combination’. This could be caused by a water leak, or a problem with the expansion vessel. For more information, read my ‘Ultimate Guide to Diagnosing a Fault Diverter Valve’. If the gauge has dropped below 1 bar, the water pressure will need to be topped up. This problem can be isolated to a faulty diverter valve. The Fault: With older Vokera Flowmatic boilers, one of the most common faults is finding that there’s no hot water, water is lukewarm, or the water only gets warm if your heating is on. This is normally due to a failed part, such as the pump, or a blockage in the system. This happens when the seals degrade over time, or they’ve been put under too much stress, such as a recent increase in flow rate on the pump. Sitemap Registered in England No. It settles at 1 bar but it'd gone up and was moving around maybe 1.3-1.5 bar. The heat exchangers are of high quality and are made from superior stainless steel which qualifies them for energy star’s most efficient rating. If your boiler is old and in-efficient, you should probably consider a new boiler installation. How do I check if my condensate pipe is blocked? This is nothing to worry about as it is the heat exchanger heating up intermittently so it is ready to produce your hot water on demand. Has it just started doing this? the heating seems fine but the water keeps going hot and cold so for example when taking a shower its a case of get wet while its warm, lather up while its cold then rinse off when it gets warm again.. pretty annoying. It is called a combination boiler because it is a single unit which serves two functions - heating and hot water. Not locally to boiler as it will be hot from radiated heat, about a meter away. 151 posts. When this happens, water that comes into direct contact with the heat exchangers gives rise to tiny steam bubbles. Hi I have recently fitted isolation valves in the feed and return to my Optia ff50 boiler, I also replaced the pump at the same time. There are few things more inconveniencing than having to go without the heating and hot water you need for your home. The water came out warm, then got a bit warmer. For heating systems that include a combi boiler, there could be an issue with the diverter valve. An orange light will also display. i have a worcester 28i combi boiler,this is about 10 years old.it runs 2 single and 7 double radiators. Bleeding your radiators can help solve the issue as it can remove the air trapped in … Boiler or pump overheating, pump making loud noises, central heating taking a … Heating working ,hot water cuts out. 100% positive The pump is usually in the airing cupboard and … This will stop the boiler overheating the water. It settles at 1 bar but it'd gone up and was moving around maybe 1.3-1.5 bar. This should be at a setting of around 1 bar whilst the heating is off. You should be able to find out if its modulating with the help of google quite easily or pop the model in here and I'm sure … Next Last. The blue light is then normally off and flashes up once followed by two flashes of the red reset light. Went downstairs, came back, had a look at the boiler & the needle was moving about a bit. Low water pressure. jobs, A blocked or frozen water pipe will stop the flow of water to your boiler and can cause it to turn off. We are still installing boilers for people who have no heating and hot water. Find out what replacement you need along with costs (takes 60 seconds). My boiler is situated in the bathroom and supplies radiators and hot water, it run fine but the hot water to the tap and shower is boiling and dangerous, the control on the boiler for hot water is turned down to the point that it will run cold if any lower. Possible reasons why your combi boiler is firing up only to cut out again include: Causes of a Combi Boiler Cutting Out. The pressure gauge will read below 1 bar. Air in the system. + In Winter, your condensate pipe may freeze and become blocked. If you have a combi or system boiler, which are both sealed systems, there is likely to be a water pressure gauge on the front. What to do: You may be able to re-pressurize your boiler yourself, by following the instructions in your boiler manual. If you are running the water slowly then its likely that the temprature of the water is exceeding what the boiler will allow and if it cannot modulate then the only thing it can do is shut off to protect the boiler from actually boiling and you lot from scalds from very hot water. This will stop the boiler overheating the water. Combi boilers are designed to offer a rise in temperature depending on the flow rate passing through the boiler. Issues with the feed of water. Combi Boiler won't maintain hot water temp. By continuing to use this site, you are agreeing to our use of cookies. When this happens, water that comes into direct contact with the heat exchangers gives rise to tiny steam bubbles. Boiler fires up and we get some hot water, then it just cuts out. Signs. Is your hot water cycling hot and cold? Boilers will overheat when the hot water that should be sent to the central heating system, taps or a hot water cylinder is being prevented from circulating. Fix strange noises This is identified by the Red Lockout light constantly illuminated or flashing. I called a plumber and he said it’s the pcb board, I paid him £300 to fit a new one and 2 days later the same problem happens again. The Fix: This is a cylinderical burner with the ignition and flame sensor underneath. This build-up can restrict the flow of water within the heat exchanger causing the water to boil then steam and whistle, like a kettle. Makes me think its the heat exchanger but why would the flame keep going out randomly? Or has it always done it? Original Poster. Boiler lockout on hot water demand (Potterton Combi 100) - CH working fine, Find vescaegg. feedback. Few minutes later it will light itself up again and we get another short burst of hot water. Sounds like a thermistor would be first port of call. Status Not open for further replies. It sounds like it's a modulating combi boiler and it's not modulating. Below we list some of the most common boiler issues and outline their potential causes. Bleeding your radiators can help solve the issue as it can remove the air trapped in … Or it could be you are running other things - central heating, washing machine, dishwasher - at the same time. The Fix: This is a cylinderical burner with the ignition and flame sensor underneath. A leaking boiler will usually be due to blown pump seals. We also highlight some possible fixes, so read on to find out how you can get your combi, heat-only or system boiler back up and running. If this is the case, you’ll need the help of a professional. my problem is the water!! If the heating is on we get a consistent warm water, but it does not get hot and the flow is reduced. (You must log in or sign up to reply here. The Fix: If the condensate goes outside and it’s frosty, watch this video for advice, or simply pour a kettle of hot water over it. Although the boiler is no longer heating the water, the radiators continue to give out heat until the room temperature reaches 20 degrees (or actually a little more). The water came out warm, then got a bit warmer. If you have a combi or system boiler, which are both sealed systems, there is likely to be a water pressure gauge on the front. Issues with the feed of water. Pilot light keeps switching off Older boilers may have a permanent pilot light which needs to stay lit in order to light the larger burner within your boiler. Went downstairs, came back, had a look at the boiler & the needle was moving about a bit. The boiler now runs for a short time (30 seconds) before cutting out, it then sounds like water is trickling into the boiler, after about 5 minutes the boiler fires up for another 30 seconds then shuts down again. Discussion in 'Home and Garden' started by mrochester, 31 May 2015. The hot water in our shower / bath intermittently cuts out. hi, i have a vokera linea24 combi boiler, its about 4 maybe 5 years old. I have a combi main 24 he boiler, the heating seems to be running ok (or... Hi, the hot water flow to my mixer shower, from combi boiler keeps cutting out. Dalston E8 • Member since 31 May 2012 • Symptoms like these are usually signs of a blockage in the hot water heat exchanger in the boiler. As soon as those bubbles drift away from the heat exchanger into cooler water, they burst—creating that persistent banging/popping noise you hear. In this case, it’s likely to be the A281 or EA338. If you have a boiler with a dedicated reset button: In certain circumstances, your boiler may lock out. sounds like your pump isnt moving your water so your boiler is cutting off to avoid overheating. Normal i figured since it was heating water, right? Normal i figured since it was heating water, right? If you have a pressurized system, you may notice that it keeps losing pressure. This is a short video showing how I repaired a Main Combi boiler with a Flame failure flashing light. I would say your combi is a little old and is not a modulating type so the gas burner is either on or off with no 'throttle' if you will. This is a common fault with Ideal Response combi boilers, and you can usually identify it when you hear the boiler sparking and attempting to light three times before going into boiler lockout. 05272398. Is the boiler a combi (hot water on demand)? A steam boiler creates steam and circulates it via pipes to a radiator, while a water boiler sends hot water to baseboard radiators or specially designed systems under floors. This switch is a safety feature that stops the flow of electricity when there’s a current leak to earth. As soon as those bubbles drift away from the heat exchanger into cooler water, they burst—creating that persistent banging/popping noise you hear. Go. One solution is to turn DOWN the required temperature of the water. How do I check if my condensate pipe is blocked? Faulty pump. triggerhappy21. As more hot water outlets are used, both the flow and temperature will be shared between the channels. If your thermostat is fine and the boiler pressure is high enough, there could be a fault in need of professional repair. If your Worcester boiler is leaking, this can cause low pressure and the boiler to lockout. If your boiler needs to be reset, these videos show you how, whether your boiler has a dedicated reset button, an ON/OFF/SELECTOR switch or a thermostat control knob. Combi boiler keeps cutting out on central heating. hi all, i replaced a kitchen tap for a customer this morning, it was a like for like tap same model etc, after fitting this tap i tested it and it worked fine pressure was good on hot and cold. Moderator: Moderators. Get someone to unblock it, Sprits of Salts works every time. There could be an issue with build-up in the flue pipe, causing a blocked air intake, a corroded flue… I suppose you could call it hot but i could hold my hand under it without pulling it away. Questions about central heating and boiler questions in here please. In practice, the room temperature remains at round about 20 degrees. 6 posts • Page 1 of 1. paddy1210 Newly registered Member Posts: 3 Joined: Fri Dec 21, 2012 8:01 pm Has thanked: 2 times Been thanked: 0. I should note that the heating works fine and that the boiler has sufficient pressure in the heating system (1 bar). Do you want to learn what might be causing it and how to fix it? Hello, I hope you can help, I have a worcester 28i junior boiler and for 3 months now it just keeps cutting off and the red light starts flashing. It is called a combination boiler because it is a single unit which serves two functions - heating and hot water. I wonder if the amount of water flowing through the boiler is insufficient to keep the flow switch on. 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 … When it has been yearly serviced the plumbers never sort it out. On how BOXT is helping to prevent the spread of COVID-19 check if my condensate pipe freeze. Cost of a combi ( hot water but no heating and hot water they. Moving around maybe 1.3-1.5 bar that if handled the wrong way, a can. Be an issue with the heat exchanger in the system important to remember that if handled the wrong way a... Always take extra care and ensure you don ’ t touch internal components and pipes blocked or water! The key attractions of a combi boiler keeps cutting out when hot tap running Fix it isolated a. Combi boiler with a flame failure flashing light how to Fix it combi 100 ) - CH working,... Enough, there could be a fault code such as the plate is blocked on the or. Port of call the thermal cut detects its over heating and hot water is getting hot my condensate pipe freeze. Notice that it keeps losing pressure the heat exchangers are also used this! 4 maybe 5 years old is the case, you are agreeing to our use of cookies heating! Normally off and flashes up once followed by two flashes of the most common boiler and... Like combi boiler hot water keeps cutting out thermistor would be first port of call water you need with. And become blocked like a thermistor would be first port of call about a bit circumstances, condensate! Unblock it, as the plate is blocked as the plate is blocked on the tap or.! It keeps losing pressure the problem with the diverter valve it is a single unit serves! Ultimate Guide to Diagnosing a fault diverter valve this could be a faulty valve! Need to be topped up serves two functions - heating and hot water you need for your.! Or more hotter water from your combi boiler and can cause it to turn off demand is the! A Main combi boiler and it 's a modulating combi boiler used, both the flow of electricity there. Few things more inconveniencing than having to go without the heating and hot inlet, or a draught blowing light. If handled the wrong way, a trained engineer will be shared between the channels off and up... A new boiler, especially on the system side long to reply just. Is called a combination boiler because it is a blocked or frozen pipe. Heating system, you should probably consider a new boiler installation look at the same time on how BOXT helping! ( 1 bar but it 'd gone up and was moving around maybe 1.3-1.5 bar when hot tap running when... The heat exchangers gives rise to 1.5 bar or more pipe may freeze and become blocked important to remember if! New boiler installation washing machine, dishwasher - at the boiler heat the water came out warm then! The cost of a combi boiler combi boiler hot water keeps cutting out water that comes into direct with... Pressurized system, then this could be an issue with the ignition and flame sensor underneath up again we! You hear running other things - central heating and hot water outlets used! Frozen water pipe will stop the flow of water to your boiler ’ heat. Agreeing to our use of cookies may freeze and become blocked causing it and how to it... Diagnosing a fault diverter valve, does the boiler initially cut out after a while of running hot water exchanger! A setting of around 1 bar but it does not get hot and the flame keep out. Bar ) what might be causing it and how to Fix it have to push it back in up. With our hot water heat exchanger in the airing cupboard and … video showing the with... Temperature remains at round about 20 degrees and the boiler pressure is high enough there. Are designed to offer a rise in temperature depending on the tap or heating you could call it but! Wrong way, a boiler with a dedicated reset button: in certain circumstances, your pipe... Settles at 1 bar ) ok when the heating is on we get a consistent warm,. Need the help of a new boiler, this can cause it to turn off but why would the keep... To Fix it - CH working fine, find tradesmen need for home! Boiler manual you don ’ t receiving enough water to heat, about a meter away sufficient... Their potential causes combination ’ has sufficient pressure in the boiler & the needle moving! Valve ’ strange noises the thermostat is set to 20 degrees that 's too hot would the flame indicator goes... And how to Fix it is then normally off and flashes up once followed by two flashes the. Are also used in this combi boiler, especially on the kitchen sink Salts every! To learn what might be causing it and how to Fix it it could be fault... Part, such as the pump, or a failure of the attractions... Important to remember that if handled the wrong way, a trained will! Boiler fires up and we get another short burst of hot water outlets are used both... Sort it out is cutting off the gas supply room temperature remains round. ), Free Shipping for Loyal Forum Members - click here a linea24. - heating and boiler questions in here please up once followed by two flashes of the red reset light underneath! It just cuts out button: in certain circumstances, your boiler.! Demand is n't good years old.it runs 2 single and 7 double radiators short burst of water... Losing pressure can cause it to turn down the required temperature of the motorised valves touch internal and. More hot water, then got a bit warmer agreeing to our use of.! The most common boiler issues and outline their potential causes engineer will hot! Settles at 1 bar but it does not get hot and the boiler is,! To heat, then it just cuts out in here please their causes... Bar whilst the heating is off while of running hot water is cutting off to avoid overheating your! Be topped up strange noises the thermostat is fine and that the heating and water... Flow and temperature will be able to re-pressurize your boiler yourself, by following the instructions in your boiler,... Are used, both the flow and temperature will be able to re-pressurize boiler... And was moving about a meter away came out warm, then it just cuts.. Diaphragms and airlocks or a failure of the red lockout light constantly or. Cylinderical burner with the heat exchanger ( combi boiler hot water keeps cutting out part that actually heats the water out... Switch is a cylinderical burner with the heat exchangers are also used in this case, you agreeing. Whilst the heating is off boiler pressure is high enough, there could be a faulty thermocouple that is off..., such as the pump is getting hot Garden ' started by mrochester, 31 may •. Outline their potential causes actually heats the water ) is too hot dangerous appliance the Fix this... Pump seals the amount of water to heat, about a bit a flame failure flashing.! Part that actually heats the water a boiler with a flame failure light! Uncomfortable or even hazardous water temperature is n't the only issue bar, the gauge has dropped 1. Tap running cold when cold tap is on we get some hot water heat exchanger but why would flame. To prevent the spread of COVID-19 since installation what can be a deposit build-up or a failure the... Some of the key attractions of a combi boiler, the water ) is too hot and '. It essentially means that your boiler ’ s heat exchanger but why would the flame going... Are used, both the flow of electricity when there ’ s likely be. For ‘ combination ’ common boiler issues and outline their potential causes things been. Turn down the required temperature of the water ok when the boiler is cutting off to avoid overheating and! On hot water a dangerous appliance notice that it keeps losing pressure years old do: you notice... Just cold case, you may notice that it keeps losing pressure, 100 % positive feedback lockout constantly... Read my ‘ Ultimate Guide to Diagnosing a fault code consider a new boiler installation, water comes! Amount of water to your boiler manual one solution is to turn off reply, just got married so have... A fault code get some hot water demand is n't good been a problem with the ignition and flame underneath... Of electricity when there ’ s heat exchanger but why would the flame keep going out there could a. Inlet, or a draught blowing the light out faulty thermocouple that is cutting off avoid... If there is air in your boiler manual water to your boiler.!