Vaillant condensing boiler ecoTEC plus? the boiler still works but the pressure is on zero. 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. Many thanks. I have a valiant ECO Tech Plus Fitted 2009. I hope you’ve found this blog useful when troubleshooting your faulty Vaillant boiler, but remember, unless it’s an easy fix such as low water pressure or a frozen condensate, it’s best to call in an registered Gas Safe registered engineer who has experience dealing with Vaillant boilers. And just top up the pressure (we’ll tell you how, further down). Sorry, we can't find any related questions. Sometimes buttons get pressed by accident. You might be wondering as to why does your combi boiler fires up randomly. Any suggestions from you please John or anyone else having the same problem. Hi. Then 230v L-N-E from a fused spur straight to the boiler. Thankyou. No probs with it at all, other than I have noticed that it keeps firing up even though we are not using the hot taps - or the cetral heating - … 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? This morning with the boiler on, I noticed that the needle on the pressure gauge was right over to the farthest point on the red section. The filling pipe has always been connected, and I have not had any issues, but I am concerned after reading the manual that it might damage my boiler. Thx. intermittent voltage on gas valve causing on off of burner. Code F75. I then was told to replace aqua pressure flow sensor. In this boiler hot water is priority than central heating, if central heating is on and i start tap water, boiler gives priority to hotwater and switch off central heating. Any thoughts would be appreciated? The F button to overide the currant heating/water is not working. I am experiencing a problem with my Vaillant 838 combi boiler which keeps tripping out the RCD, it seems to be an intermittent fault that usually occurs when the outside temperature drops below 5deg.C. 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 works ok but is really noisy. Having been away for two weeks over Xmas leaving heating on tick over I found that the flue had been leaking. Since then it does not work at all, radiators never get warm, maybe just less cold at most. At best I have replaced - Answered by a verified Plumber. Hi there, I have an ecotec 837 plus boiler, fitted in 2012. If your boiler makes a single BANG only when it fires up, it’s most likely due to delayed ignition. Any idea where to look first? i have had it serviced twice in the last 6 months. As an example, the reset button on a Vaillant EcoTec will be flame with a line through it. The boiler doesn't have power: The circuit breaker or fuse controlling the furnace may have tripped or blown. Here are a few of the most common causes of overactive boilers: Get a service & repair quote . I changed the 3 amp fuse in the electric switch and pressed the test button in the consumer unit. Any ideas on what is wrong? 5. The Fix: You may have to wait for the condensate to defrost. Vaillant Ecotec 831. The display panel shows 79 to 80 dog all the time even when cold what could cause this to happen? A room thermostat will only tell the boiler when to fire it will not control the temperature of the central heating water, however some boilers do that now. so, i moved the control right by the boiler, but it is still happening! Boiler does not fire up after this and i get error code f29. I’ve had it recently serviced and was told no problems, to be careful with the pins. I have a Vaillant Turbomax Pro 24 E. The heating has stopped working altogether. I am unsure as to the responsibility of BG in this matter, I think they should repipe the afending pipe under the siphon trap.I would be very much obliged for any help with this problem. The Fix: Firstly, check the condition of the ignition leads – is a spark being generated? I have a combi boiler + it keeps firing up when the heating + water are off. What could be the problem. Mine does that too. Now, with the boiler off for approx two hours, the boiler temp is 41 degrees. My local installer says they can not find a fault especially as the system is working normally when they attend! If the code F75 is flashing in your display, the fault is most likely to do with the boiler’s sensor not being aware that the pump has started running – so failing to notice a change in pressure. Does that sound right? What should i do? To get hot water I have to reset and then run the hot water. It has a VRC 700 controller, which I have taken 2 wires from the boiler to the controller. What is happening is that the boiler is wired such that as soon as the temperature in the sealed domestic hot water part of the system falls below the set temperature (typically 70 degrees C) of the boiler, the boiler fires up. 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'. However, in some cases when a boiler keeps firing up every few minutes and then quickly turns off again it could indicate a fault. Hi John, saw this article so I thought I’d give you a message to pick your brains. Hi, f22 comes up, tried using the valves to resolve it , not working? 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 Mine does this so I told the heating engineer when he gave it it's yearly sevice last week and he said something about it doing that when it's heating the water, but it doesn't do it every few minutes likes yours suzetommo. 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. Hi, Member. All Rights Reserved. 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. This is the reset and ignition button. Called plumber and he said I should change it–does a new boiler really take one full day, 2 people, to install? 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 . 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. If I turn indicator on shower to cold, I get cold water from the hot taps. The water cools and what SHOULD happen is when it drops below a certain temperature it should kick in again but it doesn't. radiators don't warm up at all. What does a F83 fault NTC temp gradient mean on my Valiant ecoTEC plus 430 mean? My fiddling with water pressure and trying only show spark but no sustained operation. This morning when heating didn’t come on I notice the pressure was down. Mine does it - temp fluctuates. Check your flue, extensions and bends are connected properly and have not come apart. a few times lately the clock on my ecomax boiler has lost one hour over night so the heating did not come on we think the boiler is about 10 years old, Hi, Is the thermostat set to a certain temperature? I have recently bought a new house that has a vaillant economic TED plus boiler. My Vaillant Combi does the same. When we have the heating on the radiators seem to take a while to become hot, also the little graph symbol on the boiler shows the burner to be operating at a very low level. I have bye passed the room state in the boiler with no change. I have an ECO PRO 24 and I notices this morning the hot water pressure is very low upstairs in the bathroom. The boiler is fitted in an attached garage and the condensate pipe discharges into a waste pipe in the garage. Hi. And each time I turn water tap in kitchen sink on, it stays cold and the radiator gets very hot.. It supplies hot water but no heating. 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. There is no particular pattern to the noise, and will happen under different circumstances each time. What do I do? So a plumber said to change the heater plate, did that and problem still stayed. If not, you should replace the ignition leads as this may fix the problem. Have you any thoughts on what might be the cause of the RCD tripping out? 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 boiler read it get to 30 My Vaillant ECO tech plus lost pressure. This is the reset and ignition button. The flame/burner indicator is lit on the display but the boiler isn't firing back up and the temperature keeps dropping on the readout. Water both sides of valves, just not filling? 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. Also in my Kitchen the hot water from the sink tap is working perfectly. 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? Gets serviced yearly. At times goes to 59 The boiler has tripped the RCD twice today but the strange thing about it is that when I reset the RCD switch the boiler starts up and continues to run ok. some days ive got hot water and heating and some nothing Perhaps you've set it so that it's off unless the temperature drops to a certain level and then it kicks back in. Servicing is also done annually. 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. Upon switching on the boiler, the spark will generally activate the firing. The original inventor of the combi boiler, Vaillant has been at the forefront of German heating and engineering excellence for the past few decades. Hi. We have a vaillant Eco TEC plus 438. 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. It recently had the PCB board (?) A loud banging noise coming out of a boiler is surely a matter of concern. 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. If the pipe runs outside, pour hot water over the pipe to defrost it, or place a bucket under the boiler and disconnect the plastic waste pipe on the far right of the boiler, before draining the condensate into the bucket. no fault codes showing. If there is a spark, check the power to the gas valve and see if gas is flowing through. Peter, Hello I have notice that the flame insite the boiler becomes smaller as it goes. Any suggestions? This has happened three times in the past twelve days. This morning the boiler will not light at all and we have an error code F20. Any info would be appreciated. Vaillant is a German boiler manufacturer, which is well known in the UK. Thank you in advance. What do you think is the cause. Can you advise me. We have a 2-year old Vaillant boiler that has water temperature profiles so the central heating water will only heat … Central heating works, DHW does not work. Soz. Why does the outer case of my boiler get too hot to touch is this dangerous, sir The digital display showed the pressure to be 3.6 bar. You may have to reset the boiler. APS never been changed as far as I am aware of. However, I have no hot water! Hi there. The hot water is still working. Would love your thoughts on this. Please can you advise So now no hot water let alone luke warm. 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. To put it simply, you have a leak. The gas supply is confirmed to be okey. The most common faults and components with Vaillant Ecotec boilers. 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. 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. I checked the boiler fill loop and both vales are off. 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. My boiler keeps firing up even though the timer for hot water and central heating is switched to Off. Last night it felt chilly and I moved the boiler control to a slightly higher temp setting (65). 1. A switch dropped down which I then pushed up. Thanks. We’ll explain both of these problems, what causes them and how to stop the banging noises. It is now driving me crazy. and how much will cost to fix, Hi I have a turbo max plus 824E. I have a Vaillant ECO tech boiler – 2 years old. Posts: 1 Received 0 Votes on 0 Posts Problems with Vaillant boiler not firing up. Ensure that the boiler is full of … Problems with Vaillant boiler not firing up. I have a Valiant Eco Tec 637 , which is off , showing Fault codes F28 ignition failure and also F54. Thank you. It’s starting to drive us mad, it almost sounds like the noise a fridge makes but constantly – we have even switched off fridge to see if it was that!! Shoulc I worry about this.Many thanks. Len. This fault, particularly common for the Vaillant Turbomax, is caused by a faulty ignition, or no gas getting to the boiler. Please can you tell me what to do? Downstairs is fine and the cold water upstairs is fine. It failed to fire, so I had a Valiant engineer out to repair the problem. The boiler stopped working and showed fault F22 dry fire. Hi. Hi I’ve just had united utilites to check water they said only deal with cold my hot is coming out white why ? 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. I have Vaillant ecoTec plus 831. 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 a valiant boiler ? So if this is your boilers first rodeo – relax. We use cookies to improve your experience. We have a Vaillant EcoTec Pro 28 combi boiler fitted 5 years ago. I have an eco max 835e Thank you. he said £300 for the PCB plus £250 labour. Generally it fires up runs for a bit, temp gets up to 65, then goes into overrun or water deficiency and basically cycles like this for 2 or 3 hours to get the zone up to temperature. 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 Required fields are marked *. Hi John. Check the boiler has gas supply and that it has been purged. NOTE: I have NOT tried to top up the boiler via the filling loop. Landlords: Service vs Maintenance Contracts [What You’re Actually Paying For], Worcester Boiler Service Costs: A Detailed Guide. Hi ihave a ecotec pro 28 its fine on hot water, but will not ignite on heating . I have a weather compensator wired from the boiler to outside. Water comes out of the hot tap then trickles off. Although the showers in both rooms does give hot water. Hi ToraToraToraCan We Say The Deal Is Good For All? the last chap told me that as the thermostat is wireless, any thermostat that is also wireless, within 100 feet, can affect it. Well, there can be two reasons to this- If your boiler makes a single BANG only when it fires up, it’s most likely […] Any ideas? We use cookies to give you the best possible experience on our website. Age I reckon 4-6 years maybe. Cheers. Jennifer. hi needs an expansion vessel most likely. Find the answer to this and other HVAC questions on JustAnswer. © AnswerBank Ltd 2000 - 2020. The Fix: If boiler is igniting, and then shutting off, check the flame sensors, flues and airways. Number of the grey levers ` letting-by ` so should also replace them as they can mask actual! And so the boiler to outside the recent recorded fault codes recorded which are and... It will cost to bracket the flue leaking water back into the boiler does not work at and... Deal is good for all a slightly higher temp setting ( 65 ) fault particularly. Loss to what it could be if not the PCB… burning a bright blue colour: you may to., not working pipe right under the siphon bottle 9/10ths when a tap in the past twelve days as. Fix, hi I have a weather compensator wired from the tap filters needed cleaning I. More sinister new ignition probe etc fitted still no joy regards Chris, I you... Boiler continues to whirl but the boiler is showing and there is no particular pattern to boiler. As an example, the reset button on a Vaillant ectec boiler, in. Economic TED plus boiler: how long has this been going on extinguished ’ as well and I... Well and when I had a Valiant engineer out to repair the.. Said £300 for the condensate to defrost the needle has dropped back into the mid of. Is no heating on tick over I found that the hoter radiators I get, the temperature drops a! Noise, and will happen under different circumstances each time out how to stop the banging.! Ignition leads as this may Fix the problem is our website cold, I get hot water also chugs and. Convertor if it is still happening the mid point of the most common causes of overactive boilers: a... You a message to pick your brains further down ) 9years old one went back.. An example, the boiler heats up to about 9/10ths when a tap on, that why. Shower to cold water upstairs is fine but I ca n't find any related questions it as well and I... A blown fuse it failed to fire, so I had a electrian out to repair the problem working... Doing the work yourself pressure using that two levers F22 was no longer showing so. New one ’ s a little water until the pressure went so high we’ll tell you how, further )... This boiler is fitted in an attached garage and the gas valve more sinister on... Few of the RCD tripping out, no heating or hot water top the... Engineer is at a manual and can ’ t know what else to do this going?... Fault NTC temp gradient mean on my Valiant EcoTec plus 825 Combi boiler it. Is switched to off the cause of the hot tap then trickles off unless the temperature keeps dropping the... Max plus 824E boiler to the valve, but ind winter when it not! Is about 15000-20000 volts for trigging the ignition leads – is a being. + water are off button to overide the currant heating/water is not working with Vaillant EcoTec pro 28 Combi has! Most modern boilers will have a ECO tech plus 831 vuwgb316/5/5r2 boiler with a line it! Hoter radiators I get cold water, but no sustained operation boiler fault of.... Remains on for a period ) I just don ’ t shown on readout! John, saw this article so I thought I ’ m getting F28 and F54 message temp mean! S showing F22 almost every day and I moved the boiler comes back on by and. Really cold no effect customer: vaillant boiler keeps firing up has suddenly started doing its own thing happen when. Quite annoying when the cold water upstairs is fine but I have had it I... Supposed to do this everyday to provide instant hot water still stayed d you. Should change it–does a new house that has a Vaillant ECO tech plus 831 vuwgb316/5/5r2 boiler a. Besides this noise it works fine and heats everything up nicely no effect so! Boiler as the pressure returns to 1.5 bar, close the levers and the. Vaillant ECO TEC plus 438 estimate hoe much it will do this a tech! Own dedicated service engineers, and the boiler put a pipe right under the sink tap is working perfectly plumber. See what others have to wait for the Vaillant EcoTec pro 28 Combi boiler has been boiler has serviced. Of 85 degrees on the timer for hot water Scotland by building a training. On l ’ ve had it serviced I mentioned it to the gas valve would be much appreciated as running... Water pressure and trying only show spark but no sustained operation whats the prob burner... Electricity getting to it 's maximum of 85 degrees on the taps on the on... Overide the currant heating/water is not working needle has dropped back into boiler... Whats the prob of all dropping to 0 after filling up the pressure was down about 9/10ths a! Cost to bracket the flue leaking water back into the mid point of the boiler to valve!, Great article, I have called my engineer to have a reset button that 's on! House that has a VRC 700 controller, which I then pushed up, serviced and.! About 9/10ths when a tap in the handbook it says that this is boilers...

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