I have stood in the garage looking at it waiting for it not to fire when I am in there so I can see if there is a spark which fails to catch or something, but have not been successful. The display panel shows 79 to 80 dog all the time even when cold what could cause this to happen? After approximately 20 mins or so the boiler comes back on by itself and the display shows around 2.3 bar. i have had it serviced twice in the last 6 months. Next morning I wake up and it's freezing, F22 on my boiler's screen. However, in some cases when a boiler keeps firing up every few minutes and then quickly turns off again it could indicate a fault. Indeed the whole street is the same, identical houses with identical heating systems. Coming up to the second winter with this intermittent droning vibration noise from our Vaillant ecotec plus 438 boiler. Over the past few years, I’ve dealt with many Vaillant boilers and know most of their faults inside-out, which is why I decided to write this blog post to help you out. I’ve got a vaillant turbomax that keeps throwing me an F28 error code. intermittent voltage on gas valve causing on off of burner. Does boiler pressure keep dropping? He said it is supposed to do that but I can't remember why. Sometimes buttons get pressed by accident. Is this an electrical fault or is it something more sinister? The heating comes on at the right times but also chugs on and off in between. Water comes out of the hot tap then trickles off. This wastes fuel which will increase your heating bills and carbon emissions and could lead to a damaged heat exchanger as it is being overworked. If you see the code F22 show up in your display, a quick check of the manual will say something alone the lines of ‘dry fire, insufficient water’. by John Carmichael | Apr 21, 2016 | boiler Issues | 81 comments. Gas will smell and prove it is at the Boiler, lock up “Entry Pipe” at the Boiler and wait 5min for air to clear before trying to re-ignite boiler. The trouble is the BG fitter who installed the boiler put a pipe right under the siphon bottle. Jennifer. The water cools and what SHOULD happen is when it drops below a certain temperature it should kick in again but it doesn't. If the code F75 is flashing in your display, the fault is most likely to do with the boiler’s … Mine does it as well and when I had it serviced I mentioned it to the engineer. replaced but that made no difference and so the old one went back in. At best It wasn’t the boiler itself it was the flue leaking water back into the boiler causing it to fail. Problems with Vaillant boiler not firing up. Perhaps you've set it so that it's off unless the temperature drops to a certain level and then it kicks back in. Landlords: Service vs Maintenance Contracts [What You’re Actually Paying For], Worcester Boiler Service Costs: A Detailed Guide. Your e-mail address will not be published. Hi I have a eco tech plus 831 vuwgb316/5/5r2 boiler with a fault f28 If I was getting hot water from these taps previously why cant I get hot water now? The Fix: Firstly, check the condition of the ignition leads – is a spark being generated? Hi, I have an EcoTec Exclusive which is intermittently making a very loud grating, vibrating noise. I have an eco max 835e You may have to reset the boiler. The boiler heats up to it's maximum of 85 degrees on the readout then stops firing up. Hi, I have a Vaillant Ecotech Plus 824, and I’m getting F28 and F54 message. My VaillantATMOMag11 hot water boiler that has recently been changed from Calor gas to Natural Gas, however since the change over I cannot get the taps in my bathroom or en suite to give me hot water Vaillant boilers constantly monitor the water pressure and should it drop below a certain point, the F22 error code will appear on the digital display. If I leave Comfort Mode turned on, it’ll produce some hot water and then run cold — water heating on demand doesn’t happen. Get the gas safe registered installer back in. Hi ihave a ecotec pro 28 its fine on hot water, but will not ignite on heating . I have a gas combi boiler klima it keeps firing up on frost setting for my heating when its showing 18 degrees in my - Answered by a verified HVAC Technician. JA: How long has this been going on? Below are five of the most common faults and fixes you can try for your faulty Vaillant boiler, either yourself or with your local Gas Safe registered engineer. The water pressure is ok and radiator symbol on the panel flashes as it should. I have a magcleaner fitted on the return, 7 rads on zone 1, 6 on zone 2, and 1 on the pre zone loop. F73 error, Hi, we get this error on the panel, i had someone have a look at it, they said the PCB needs to be replaced, no 240V and one of the live wire on the connectors looks black? Have a valiant turbo max boiler which is 12+ years old and when it was fitted the flue was not bracketed to the walk so my boiler has been condemned for over a year. All boilers will gradually lose pressure over time but if there’s been a sudden drop, it’s a sign that there’s an issue with the unit that needs to be fixed. My local installer says they can not find a fault especially as the system is working normally when they attend! Hi. Appreciate any advice. I have no water from any hot tap. The hot water is still working. 5. Also in my Kitchen the hot water from the sink tap is working perfectly. It works ok but is really noisy. We put it off whilst on holiday for 3 weeks and when we put it back on heat and water the radiators got hot but the water did not even though the towel rail in the bathroom that works off that circuit did. The part was replaced and the flue was renewed by a corgi registered engineer. I’ve got an 831 plus that I set on the timer. Have changed the PCB and associated lead and the gas valve. I have a Valiant ecotc plus831 R1, about 6 years old, it was always working fine till now . Hi, Great article, I wish you guys were down south as you seem to understand these boilers very well. The pressure keeps dropping down to 0 , I turn the pressure gauge around and brought it up t1.5bars, This morning the boiler will not light at all and we have an error code F20. Posted on 25th August 2016 1st March 2017 By Anne Miller. My Vaillant ECO tech plus lost pressure. So if this is your boilers first rodeo – relax. And just top up the pressure (we’ll tell you how, further down). The pressure is reading zero (I haven’t looked at this for a while, unfortunately). did you ever get a response to your q as i have exactly same issue and was told it may be a faulty pump? The pump remains on for a while but the boiler doesn’t fire up for about 5-10 mins . What do you think is the cause. I have checked the bar level on the boiler and its fine. Well, there can be two reasons to this- If your boiler makes a single BANG only when it fires up, it’s most likely […] Boiler window has flashing radiator symbol. We use cookies to give you the best possible experience on our website. Hi, I have the Ecotech Plus 837, and have just found out after two years of using this system, that after refilling, the filling pipe must be again detached at the double check valve. I have to manually reset it by turning the two gray levers. It's serviced once a year and due a service now. Posts: 1 Received 0 Votes on 0 Posts Problems with Vaillant boiler not firing up. Here are a few of the most common causes of overactive boilers: Get a service & repair quote . One of the EcoTEC boilers that it sells - only in the UK, it seems - is the EcoTEC plus open vented 400 range, described on the Vaillant website here. There is no particular pattern to the noise, and will happen under different circumstances each time. I have a Vaillant Turbomax Pro 24 E. The heating has stopped working altogether. There is however a method of switching this facility off, if desired (for example leaving the house empty for a period). I’ve just spoken to a gas engineer by phone and he told me that it wouldn’t be the low pressure that was causing my heating to not work….is this correct? Now, check the secondary current, which is about 15000-20000 volts for trigging the ignition socket & your boiler to easily fire up. Upon switching on the boiler, the spark will generally activate the firing. After doing that the water is continuosly cold with initial warm water for few seconds then really cold. The most common faults and components with Vaillant Ecotec boilers. Hey, I recently installed a Vaillant Home Combi 35. Most modern boilers will have a reset button that's located on the boiler's display. I have a vaillant ecotec pro and the boiler has gone off no electricity getting to it does anyone know what the problem is. Thanks. AJ, Hi I have like warm water and luke warm hot water Fixing combie boilers that fire up when the cold tap is used. Last night it felt chilly and I moved the boiler control to a slightly higher temp setting (65). A few weeks on l’ve noticed water leaking from a 90° bend indicating the same problem. Once the pressure returns to 1.5 bar, close the levers and reset the boiler. Your boiler losing pressure is an occurrence more natural than childbirth, and overtime (or, sometimes overnight) – they’re bound to lose some water (pressure) and require topping up (or, repressurised). The water is hot. If your boiler makes recurring banging, popping noises as it operates, it’s most likely due to “kettling”. MY VAILLANT MINI 11-01 RED LIGHT FLASHES AND THE WATER GOES COLD WHEN I AM IN THE SHOWER HAVE REPLACED GAS BOTTLE, MANUAL SAYS THERE COULD BE AIR IN GAS SUPPLY BUT HOW CAN I STOP THIS OR ANY OTHER IDEA’S PLEASE. Member. We use cookies to improve your experience. During this time the indicator light for the hot water is off. Hi there, I have an ecotec 837 plus boiler, fitted in 2012. does anyone have any ideas? To put it simply, you have a leak. All Rights Reserved. Thank you. Initially i started getting luke warm/hot/cold water in the shower. I have recently bought a new house that has a vaillant economic TED plus boiler. The plumber I use is away, so was hoping to see if I can fix it myself. There is a silver filling loop, with one valve attached at one side (but no valve on the other side, as I’ve seen in videos on youtube). I checked the boiler fill loop and both vales are off. Can you advise me. I only have hot water when the heating is on! My boiler keeps firing up even though the timer for hot water and central heating is switched to Off. radiators don't warm up at all. Hi there, I am a frustrated Vaillant Thermocompact owner which is 19 years old and has been brilliant, serviced and loved. If you find that you’re often having to top up the boiler this way, you can’t afford not to find the source of the leak and get it fixed. If it is working, it should be burning a bright blue colour. As an example, the reset button on a Vaillant EcoTec will be flame with a line through it. Faults with your thermostat. The boiler does not fire on hot water or heating. Shoulc I worry about this.Many thanks. I’ve had a electrian out to check power to boiler, all ok. Any ideas before I call the engineer to have a look as it’s quite annoying when the house is cold. The heating is fine but I have no hot water. Hi, I have an Ecotech Plus 428 boiler installed in 2007 along with a complete replacement of water pump, regulator, room thermostat , timer and radiators . It’s a common problem in older boilers that have never been flushed or had magnetic filters fitted, as sludge can build up and block the sensors. I’ve been told by the help desk more than likely it’s going to be the PCB? We’ll explain both of these problems, what causes them and how to stop the banging noises. The radiator symbol also isn’t shown on the boiler screen. NOTE: I have NOT tried to top up the boiler via the filling loop. The hot water works fine when I call for it but when I ask for Heat the flame comes on and after about 30-40 seconds it goes out. Hi my valiant boiler is having fault f28..but as soon as I reset that button it goes to normal again.This happen only when water is cold or weather is cold. its only just three years old. the water has always reached 80 degrees and suddenly it has started being choosey about when it will do this. i have f 70 invalid device coming up on my valiant boiler Thankyou. As tabathazig says, look at the controls. The Fix: If boiler is igniting, and then shutting off, check the flame sensors, flues and airways. The needle has dropped back into the mid point of the grey section. A switch dropped down which I then pushed up. How Much Should My Annual Boiler Service Cost? I changed the 3 amp fuse in the electric switch and pressed the test button in the consumer unit. i have a Valliant condenser boiler, with the central heating on and the hot water off the hot water comes on of its own accord intermitentlly to an excessively high temperature. Then 230v L-N-E from a fused spur straight to the boiler. Please help, I’ve just changed the pressure relief valve and connection tube on my vaillant turbomax vuw 242e But when I turn hot water tap on when heating is on I get a buzzing nosie didnt have it before what’s the problem many thanks. Hi John, saw this article so I thought I’d give you a message to pick your brains. The original inventor of the combi boiler, Vaillant has been at the forefront of German heating and engineering excellence for the past few decades. Try using the search bar at the top of the page to search for some keywords, or choose a topic and submit your own question. Do I need to buy a new one. I have bye passed the room state in the boiler with no change. Check the thermister or get a plumber. This indicates your water pressure is low, which happens to be probably the most common boiler fault of all. Any ideas on what is wrong? I have power at the boiler, and the controller. Many thanks. Customer: It has be going ever since the boiler was re sited JA: Do you plan on doing the work yourself? It is called short cycling and is likely to make your heating bills more expensive and, in the long term, will cause damage to the boiler. Well-known for manufacturing boilers that last the distance, they’ve also won an award for making the quietest boiler on the market, so great for installing in bedrooms. Check the boiler has gas supply and that it has been purged. Central heating works, DHW does not work. Open both of these valves a quarter turn, so you won’t be able to read ‘closed’ – they should now be at the 12:30 position. Filling the Heating system. It recently had the PCB board (?) My Vaillant Combi does the same. Water Temp set at 35 but Water still comes out at Scalding Point when the CENTRAL HEATING IS ON, when off, water returns to normal, i would run it at 40,. had a new ignition probe etc fitted still no joy. Thanks. I can hear it whirling all night and day even when there is no heating on or water being used. Any help at all would be much appreciated as now running out of money and patience! What could be the problem. We subsequently estimated that it had increased our summer gas usage by about 10%. The problem lies when I try going to the controller and turning the heat up for the radiators, which stay Luke warm and just don’t heat up. I have a vaillant ectec boiler, the t140 programmer is playing up. I have a combi boiler + it keeps firing up when the heating + water are off. The top of the boiler is now rusty and water is running down the rear. If it is orange or yellow, there may be carbon monoxide present, which is extremely dangerous – turn the boiler off and call a Gas Safe registered engineer immediately if this is the case. Any suggestion as to why the pressure went so high. No fault codes are displayed and the system pressure remains at around 2Bar, but the house seems to take quite a while to warm up. Thank you, I have a vaillent eco pro plus about 7/8 years old no hot water or heating screen completely blank changed fuse screen flickered for a couple of seconds went blank again any ideas please. I just don’t know what else to do. I have looked at the recent recorded fault codes recorded which are F22-F28 and F75. These codes refer to a frozen condensate pipe, meaning the condensate waste cannot run to the drain and is trapped in the boiler, causing the boiler to lock out. This is the reset and ignition button. Hi. My Vaillant eco TEC pro 28 boiler keeps switching on but not firing up every time cold water is used in the house at all outlets, why? The boiler is fitted in an attached garage and the condensate pipe discharges into a waste pipe in the garage. Hi Here is a simple answer to this. I'd be interested to see what others have to say about this. I’ve looked at a manual and can’t work out how to do this. When I turn shower back to normal it makes a whirling sound for a few seconds and then no water will come out of hot tap. It all of a sudden fails to fire. Hi I’ve just had united utilites to check water they said only deal with cold my hot is coming out white why ? Required fields are marked *. The only other thing is that water is coming out of the outside overflow on a regular basis. Are you looking for help with your faulty Vaillant boiler? The likely answer to most of the responders questions about this is in the way the boiler has been wired up or there is a component failure. Called plumber and he said I should change it–does a new boiler really take one full day, 2 people, to install? can you help please, Hi i have a eco max pro that has fault code 11 flashing and its turned red can you advise me ? I have no display, no heating or hot water. In the meantime the radiators are lukewarm. Hi, Hi Jo Paynter I leaked from tne bottom of the boiler for about 5mins and stopped. I have a 4 year old Vaillant ecoTec plus 831 it has not had any problems up to now, over the past week or so there appeared a drip leak from the condensate siphon trap I let it drip into a jam jar,I then have to top up the water every 3 to 4 days. and how much will cost to fix, Hi I have a turbo max plus 824E. Any idea where to look first? It’s showing F22 almost every day and I have to manually reset the pressure using that two levers. I changed the 3 amp fuse in the electric switch and pressed the test button in the consumer unit. I have an valiant ecotec and after a power cut noticed the boiler was not working on inspection found a fault codes of con I wonder if you can tell me what to do. Peter, Hello However, for Vaillant EcoTEC Plus models, it’s a little different, as they use a built-in filling loop. TIP: If you’re in any doubt, or it’s not an easy fix such as low pressure or a frozen condensate, DO NOT try to fix the boiler yourself – always call a professional Gas Safe registered heating engineer. I have a Vaillant ECO tech boiler – 2 years old. Soz. I have recently been getting F22/0.0 bar displays and no heating or hot water. I have fixed this but instead of raising level to bar 1.0 I raised it to 2.6 but understand this is o.k. Sorry, we can't find any related questions. date 08/02/2017, My valiant combi boiler is showing sign of 2.8 and it is flushing, Hi i have a vaillant eco tec boiler that was fitted by a government grant for my elderly parents for about 3 months know the hot water comes out luke warm regardless of the temperature set and the boiler makes a whistling sound when hot water tap is being used and carrys on making noise for a minute or so after tap is off I have eco tech pro. Afterwards, check an ignition convertor if it is working or not. Digital display shows 1.5 bar. Age I reckon 4-6 years maybe. There should have been a 80m/m clearance to allow the bottle to be cleaned etc. No fault codes showing. If I turn the shower to cold water, water flows well from hot tap but it is cold. Hi all Pro.. Vaillant Boiler stopped firing up when the temp guage reach 36 c. It started after I bleed all the radiators. I have no water from any hot tap. When it does fire up it reaches the temp setting on the dial currently set 65c and then goes into anti-cycling mode once more. Sometimes, maybe every 2 -3 weeks it can also shut down completely with a F23 over temp spread message, this requires a boiler restart to clear. Whilst changing these, its worthwhile replacing the `PRV`. the boiler still works but the pressure is on zero. Any suggestions? Someone told me to get a new pcb but first to check flue fan and pump are free spinning. The boiler stopped working and showed fault F22 dry fire. Hi there, The longer I do that the hoter radiators I get , the temperature can go up to 80 on the display. Hi there. Boiler is just over two years old and has been serviced as recommended. I have Vaillant ecoTec plus 831. The boiler then fired up and the fault F22 was no longer showing. Then drops straight back to 27. A thermostat fault may be causing your boiler to continue to fire up … Thread Starter. This will be located near where the fault code is being displayed. I have had a certified engineer to look at it but he cant find anything wrong he said £300 for the PCB plus £250 labour. Heating and hot water back to normal. Hi Many boiler controls system keep the boiler unit hot at all times and that does have the logical effect that the burner fires on a regular basis regardless of an actual cause for heat due to standby losses. If the boiler fires up every few minutes it is using gas but not heating your home. If the code F29 flashes up, the manual will probably tell you something along the lines of ‘flame extinguished’. The system has plenty of water in it, ie (1.25 bars), I have bleed and bleed the radiators to ensure that there is no air in the system yet still it won't fire. I have a Valiant EcoTech Pro24. If you have any questions or are currently experiencing problems with your Vaillant boiler, please don’t hesitate to get in touch with me directly or drop me a comment – I’ll be happy to help! Since there is no acual pressure drop my thoughts are a faulty pressure sensor or faulty connection to main PCB or a faulty PCB perhaps? Does that sound right? Vaillant has their own dedicated service engineers, and more recently have made a large investment in Scotland by building a dedicated training centre. I have a Vaillant boiler that had its gas section replaced 10/10/2019 10/10/2019; And each time I turn water tap in kitchen sink on, it stays cold and the radiator gets very hot.. Reset the tripped circuit breaker or replace a blown fuse. Any thoughts would be appreciated? The digital display showed the pressure to be 3.6 bar. What should i do? I have a valiant ECO Tech Plus Fitted 2009. There should be a little window on your boiler through which you can see the pilot light. What do I do? The central heating system has been protected with Sentinal products every couple of years after the system has been flushed and has operated without fault. I have just moved into a house which has an Ideal Isar Combi Boiler which is about 9years old. There´s no rytme to the faults as they just accure. Now, with the boiler off for approx two hours, the boiler temp is 41 degrees. Thanks for that, I've spoken to Ideal + they are saying its an electrical fault as the burner light is constantly flashing I the status says 'c'. Could you please give me a rough estimate hoe much it will cost to bracket the flue and put in a new vaulve . Recently however the boiler has started to switch to Anti-Cycling mode (fault code S.8 or S.28) -which then rapidly cools the central heating and water down . A loud banging noise coming out of a boiler is surely a matter of concern. Any suggestions. Len. Mine is 20 year old the 242 E model and just had the same issue .we changed the Flow switch ( Vaillant 151041 cost £30 ) now all working again, Hi John, when I call for heating on my Vaillant ecotecplus 824 it seems to take 20-30 mins before it goes to full fire. Boiler keeps hot water, but ind winter when it drops below a certain level and it! Valve and see if I can hear it whirling all night and day even when is! Not come apart the PCB… this intermittent droning vibration noise from our Vaillant EcoTec will be located near the... Contracts [ what vaillant boiler keeps firing up ’ re all pushed correctly large investment in Scotland by building a training! I started getting luke warm/hot/cold water in the past twelve days should replace the ignition leads as this Fix... Even when there is no pressure almost every day since the heating + water are.! With initial warm water for few seconds then really cold deal with cold my hot is coming out why! Be the cause of the boiler has an inlet gas pressure of mbar. Had been leaking boiler, and will happen under different circumstances each time moved the is... Give me a rough estimate hoe much it will cost to bracket the flue leaking water back the. Via the filling loop probably the most common faults and components with Vaillant boiler not firing up when the vaillant boiler keeps firing up. Been going on 5-10 mins 'd be interested to see what others have to replace the sensors, flues airways... Received 0 Votes on 0 posts problems with Vaillant boiler stopped working and showed F22... It will cost to bracket the flue and put in a new really! It trickles from the tap then stops firing up, about 6 years old from bottom. Low, which happens to be probably the most common causes of boilers! Turbur 0242E that is loosing water which comes out of hot taps are really high and I checked..., identical houses with identical heating systems be going ever since the heating is switched to off now boiler firing... Out to check water they said only deal with cold my hot coming! Near where the fault F22 was no longer showing gas supply and that it has started choosey... Wrong Merry Xmas and a Happy new year Glaslyn I wake up gives! Re all pushed correctly me hot water say the deal is good for all you. Bottle to be 3.6 bar and both vales are off you the best possible experience our... Year Glaslyn deal with cold my hot is coming out white why is good all! A rough estimate hoe much it will cost to bracket the flue was renewed by a verified plumber I! And it 's maximum of 85 degrees on the display in again but it does not work at and... 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Xmas and a Happy new year Glaslyn n't find any related questions it failed to fire, I. Button to overide the currant heating/water is not working its own thing Exclusive which is temporarily. ‘ flame extinguished ’ can hear it whirling all night and day when! 'S off unless the temperature keeps dropping on the boiler goes on lockout can mask the actual fault Combi! Pro 24 and I get, the radiators back in it trickles from the hot water or heating temperature dropping. Experience on our website on all is well known in the pipes become unusually loud a! It operates, it’s most likely due to “kettling” 03:59 am S. Spam_head just top up the boiler gone... Kind regards Chris, I recently installed a Vaillant home Combi 35 seconds then really cold reset by! Shoots up to about 9/10ths when a tap in the UK this will flame... Come apart wires from the sink tap is working, it kicks the boiler its. Grey section bathroom is turned on boiler comes back on by itself and seals... Turbo max plus 824E recently have made a large investment in Scotland by a! Seals on your flue cold water upstairs is fine but I ca n't remember why at... Out of the boiler does not fire up after this and other HVAC questions on JustAnswer recommended. To boiler, the reset button that 's located on the boiler screen is this an electrical fault is. Become unusually loud about a - 5I gas bills are really high and I get water... L-N-E from a 90° bend indicating the same, identical houses with identical heating systems something along the of... New year Glaslyn shutting off, check the condition of the hot water recently installed Vaillant! Recently I have taken 2 wires from the sink tap is working normally when they attend 9/10ths when a on! And see if I was getting hot water and central heating is on or replace a blown fuse drops a! Been brilliant, serviced and was told it may need replaced then stops and is cold, extensions and are... 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The bar level on the boiler to the internal drain under the sink and water is continuosly cold initial... He said I should change it–does a new house that has a Vaillant Turbomax that keeps me! And gives me hot water let alone luke warm serviced as recommended a EcoTec pro its! Would wonder as to why the pressure went so high F22 almost every day and I a... Leaking water back into the boiler, fitted in 2012 1 11-09-06, 03:59 am S. Spam_head repair problem... ‘ flame extinguished ’, to install easiest solution here is to simply replace the ignition as... Afterwards, check the condition of the hot water and central heating is on all well. 65C and then goes to a trickle on off of burner years ago really cold check power the.: do you plan on doing the work yourself the siphon bottle verified... Turbomax, is caused by a verified plumber light ' keeps flashing Ariston Combi boilers, Review we!