Any idea where to look first? Hi, Great article, I wish you guys were down south as you seem to understand these boilers very well. My gas bills are really high and I’m wondering if this boiler is trying to tell me something? Hi there, I have an ecotec 837 plus boiler, fitted in 2012. Any thoughts would be appreciated? I’ve got a vaillant turbomax that keeps throwing me an F28 error code. The display panel shows 79 to 80 dog all the time even when cold what could cause this to happen? The Fix: Firstly, check the condition of the ignition leads – is a spark being generated? At times goes to 59 A switch dropped down which I then pushed up. I have looked at the recent recorded fault codes recorded which are F22-F28 and F75. Why Your Boiler Fires Up Then Turns Off. If not, you should replace the ignition leads as this may fix the problem. Hi. On the display it has a egg timer displayed I have a Vaillant boiler that had its gas section replaced 10/10/2019 10/10/2019; I have checked display, there are no fault codes coming up, sometimes it says “heating over run” and sometimes “OHV mode”. 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. It all of a sudden fails to fire. Question - My warmflow boiler bluebird 90/120 keeps firing up, About a - 5I. I have recently bought a new house that has a vaillant economic TED plus boiler. The boiler stopped working and showed fault F22 dry fire. Any suggestions? Fill the water over 1.5bar what shall I do, I have a turbomax about 10 years old stated coming up with F22 fault but pressure above 1.5 bar I can hear it whirling all night and day even when there is no heating on or water being used. Perhaps you've set it so that it's off unless the temperature drops to a certain level and then it kicks back in. 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? Thank you. The heating comes on at the right times but also chugs on and off in between. Thanks. A switch dropped down which I then pushed up. Having been away for two weeks over Xmas leaving heating on tick over I found that the flue had been leaking. The gas supply is confirmed to be okey. This has happened three times in the past twelve days. 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 have a vanilla tea exoteric pro 28 and last night noted that it had switched off at the mains and when I turned itback in and refilled the tank and the bar went up I though it was ok until I noted the thermostat and the boiler were not communicating and the heating is on permanently. Phil. Last night it felt chilly and I moved the boiler control to a slightly higher temp setting (65). Water comes out of the hot tap then trickles off. I then was told to replace aqua pressure flow sensor. Many thanks for any help. Digital display shows 1.5 bar. 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. Any suggestion as to why the pressure went so high. Ensure the boiler has an inlet gas pressure of 20 mbar at the gas valve. Well, there can be two reasons to this- If your boiler makes a single BANG only when it fires up, it’s most likely […] I can’t seem to find the part number of the siphon bottle. Check your flue, extensions and bends are connected properly and have not come apart. Does that sound right? Hi, the water has always reached 80 degrees and suddenly it has started being choosey about when it will do this. The radiator symbol also isn’t shown on the boiler screen. 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. I’ve had a electrian out to check power to boiler, all ok. APS never been changed as far as I am aware of. As an example, the reset button on a Vaillant EcoTec will be flame with a line through it. Hi, I have an EcoTec Exclusive which is intermittently making a very loud grating, vibrating noise. The water is hot. It has a VRC 700 controller, which I have taken 2 wires from the boiler to the controller. You may have to reset the boiler. I have no water from any hot tap. JA: How long has this been going on? This will be located near where the fault code is being displayed. 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 . So if this is your boilers first rodeo – relax. During this time the indicator light for the hot water is off. Is this normal? Have changed the PCB and associated lead and the gas valve. Next morning I wake up and it's freezing, F22 on my boiler's screen. I’ve been told by the help desk more than likely it’s going to be the PCB? The boiler then fired up and the fault F22 was no longer showing. 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. 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. What do I do? If the code F75 is flashing in your display, the fault is most likely to do with the boiler’s … Could you please give me a rough estimate hoe much it will cost to bracket the flue and put in a new vaulve . Any info would be appreciated. Once the pressure returns to 1.5 bar, close the levers and reset the boiler. The first thing I know is that there is the red illuminated light at the top of the light bar that shows you what is going on. 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. the condensate is inside and connected to the internal drain under the sink and water is passing with good flow so not blocked. 16. 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. Then drops straight back to 27. Code F75. Any idea where to look first? Hi all Pro.. Vaillant Boiler stopped firing up when the temp guage reach 36 c. It started after I bleed all the radiators. The Fix: If boiler is igniting, and then shutting off, check the flame sensors, flues and airways. 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 a valiant boiler ? 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. I have called my engineer to check the boiler as the pressure was dropping to 0 after filling up the system with water. Hi ihave a ecotec pro 28 its fine on hot water, but will not ignite on heating . My fiddling with water pressure and trying only show spark but no sustained operation. The boiler is still I working very well. To get hot water I have to reset and then run the hot water. Dealing with a faulty boiler can be stressful, especially when you have to decipher fault codes and are left feeling unsure of what the problem actually is. This is the reset and ignition button. I turned it on and it starts off ok then goes to a trickle. Most modern boilers will have a reset button that's located on the boiler's display. After doing that the water is continuosly cold with initial warm water for few seconds then really cold. I am a at loss to what it could be if not the PCB…. All Rights Reserved. Any ideas before I call the engineer to have a look as it’s quite annoying when the house is cold. I have a Vaillant Turbomax Pro 24 E. The heating has stopped working altogether. Also in my Kitchen the hot water from the sink tap is working perfectly. I have a Valiant ecotc plus831 R1, about 6 years old, it was always working fine till now . To put it simply, you have a leak. Is the thermostat set to a certain temperature? had a new ignition probe etc fitted still no joy. The boiler read it get to 30 Hi I have a eco tech plus 831 vuwgb316/5/5r2 boiler with a fault f28 I have a vaillant ectec boiler, the t140 programmer is playing up. 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. Hi Jo Paynter If I turn indicator on shower to cold, I get cold water from the hot taps. The top of the boiler is now rusty and water is running down the rear. An when I turn a tap on, it kicks the boiler up and gives me hot water. Any ideas on what is wrong? Check the thermister or get a plumber. We use cookies to improve your experience. Any help greatly appreciated TIA. Join Date: Nov 2006. A few weeks on l’ve noticed water leaking from a 90° bend indicating the same problem. He said it is supposed to do that but I can't remember why. Are you looking for help with your faulty Vaillant boiler? Many thanks. The water level is low: Maintain the water level in the boiler at half-full.The boiler's automatic filling system, controlled by the pressure-reducing valve, should maintain the proper water level at 12 to 15 psi of pressure. The boiler heats up to it's maximum of 85 degrees on the readout then stops firing up. My Vaillant ECO tech plus lost pressure. I’m definite they’re all pushed correctly. 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. 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'. My Vaillant Combi does the same. Besides this noise it works fine and heats everything up nicely. I have fixed this although I did do it too high …2.6 rather than bar 1.0. As tabathazig says, look at the controls. I’ve got an 831 plus that I set on the timer. And just top up the pressure (we’ll tell you how, further down). Just now boiler keeps hot water in demand on, that's why 'green light' keeps flashing. Thread Tools Search this Thread #1 11-09-06, 03:59 AM S. Spam_head. But shoots up to about 9/10ths when a tap in the bathroom is turned on. Mine does that too. Afterwards, check an ignition convertor if it is working or not. 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. The heating is fine but I have no hot water. When I return indicator to normal there is a whirling noise and water ceases to come out of hot taps. Posts: 1 Received 0 Votes on 0 Posts Problems with Vaillant boiler not firing up. Two doors on boiler on zero As well? I have a Valiant EcoTech Pro24. Vaillant Ecotec 831. Customer: It has be going ever since the boiler was re sited JA: Do you plan on doing the work yourself? Hi John, saw this article so I thought I’d give you a message to pick your brains. 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,. Any idea’s ? If there is apparently no leak in the home but the boiler pressure still keeps dropping, the culprit may be one of the boiler’s internal components. A loud banging noise coming out of a boiler is surely a matter of concern. Jennifer. It fires up too when I turn on the taps on the washbasin. Hi. 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? However, in some cases when a boiler keeps firing up every few minutes and then quickly turns off again it could indicate a fault. 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. Most modern boilers will have a reset button that's located on the boiler's 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. It's serviced once a year and due a service now. I was initially told the tap filters needed cleaning which I have actually replaced them with new one’s to no effect. I have Vaillant ecoTec plus 831. Mine does it as well and when I had it serviced I mentioned it to the engineer. its only just three years old. Vaillant is a German boiler manufacturer, which is well known in the UK. The plumber I use is away, so was hoping to see if I can fix it myself. Reset the tripped circuit breaker or replace a blown fuse. however, it has suddenly started doing its own thing! I checked the boiler fill loop and both vales are off. Soz. Thx. The pressure keeps dropping down to 0 , I turn the pressure gauge around and brought it up t1.5bars, It only appears to leak after it has been boiler has been working. The only other thing is that water is coming out of the outside overflow on a regular basis. Although the showers in both rooms does give hot water. If there is power to the valve, but no gas flowing, it may need replaced. 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. He thinks it’s either a diverter valve or the thermostat. i have had it serviced twice in the last 6 months. I have recently been getting F22/0.0 bar displays and no heating or hot water. What could be the problem. Could it be that the boiler gets too hot or simply suffercates, I’ve got hot water but the heating do not come on, Hi John, If the boiler fires up every few minutes it is using gas but not heating your home. Anyone in that case would wonder as to why the boiler makes banging noise when firing up. Sometimes buttons get pressed by accident. Upon switching on the boiler, the spark will generally activate the firing. 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 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. 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. 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 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. 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. 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. Thread Starter. The boiler then fired up and the fault F22 was no longer showing. I have no display, no heating or hot water. does anyone have any ideas? ToraToraToraCan We Say The Deal Is Good For All? The most common faults and components with Vaillant Ecotec boilers. We subsequently estimated that it had increased our summer gas usage by about 10%. Can it be helped ? 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. I’ve looked at a manual and can’t work out how to do this. In May 2011, a Vaillant press release announced that it had achieved UK installation of one million EcoTEC boilers. I have a Vaillant ecoTECpro 28 boiler installed Nov 2012. Why does the outer case of my boiler get too hot to touch is this dangerous, sir Any ideas? Have you any thoughts on what might be the cause of the RCD tripping out? We have a vaillant Eco TEC plus 438. And each time I turn water tap in kitchen sink on, it stays cold and the radiator gets very hot.. Any ideas please as my heating engineer is at a loss too. 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? I have an ecotec plus 831 boiler. I hv valliant ecotec pro 28 r1.while gettg water level through valve.if we dont move the valve back down aftr water level is up.what can happen vid it.can it cause major damage. i have a vaillant VK654/9 – 1654/9 there is a beeping sound and a voice saying low battery, I cannot find were the battery is located. 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 . 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’. Find the answer to this and other HVAC questions on JustAnswer. would it be safe to say its the PCB not the gas valve ? You may have to replace the sensors, and the seals on your flue. Either the flue isn’t all the way in the 90 bend, or the seal was damaged at the time the new flue went in. The pressure is reading zero (I haven’t looked at this for a while, unfortunately). Any suggestions. AJ, Hi I have like warm water and luke warm hot water 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. 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!! 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. The boiler is fitted in an attached garage and the condensate pipe discharges into a waste pipe in the garage. At best We use cookies to give you the best possible experience on our website. Thank you in advance. Indeed the whole street is the same, identical houses with identical heating systems. 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. 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. However if heating is on all is well no codes no firing issues etc. Here is a simple answer to this. 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. This is the reset and ignition button. Your e-mail address will not be published. Thanks I have bye passed the room state in the boiler with no change. 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. How Much Should My Annual Boiler Service Cost? I have checked the bar level on the boiler and its fine. Can you advise me. I’ve had it recently serviced and was told no problems, to be careful with the pins. Vaillant condensing boiler ecoTEC plus? For EcoTEC Plus models, look below the boiler; there should be two grey levers which will have ‘closed’ written on them – each should be sitting at the ‘quarter to 3’ position (if it were a clock). The boiler stopped working and showed fault F22 dry fire. 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. The Fix: You may have to wait for the condensate to defrost. It recently had the PCB board (?) 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 have a valiant ECO Tech Plus Fitted 2009. 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. An engineer has been out four times – have had sensors, diverted valve and heat exchange plates replaced, engineer has now run out of ideas. If the code F29 flashes up, the manual will probably tell you something along the lines of ‘flame extinguished’. Your e-mail address will not be published. It works ok but is really noisy. Initially i started getting luke warm/hot/cold water in the shower. 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. 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? We obviously shouldn’t have to do this everyday. We have a 2-year old Vaillant boiler that has water temperature profiles so the central heating water will only heat … And how severe is the problem? 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 intermittent voltage on gas valve causing on off of burner. Len. Called plumber and he said I should change it–does a new boiler really take one full day, 2 people, to install? Would love your thoughts on this. Member. Thanks. 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. by John Carmichael | Apr 21, 2016 | boiler Issues | 81 comments. Posted on 25th August 2016 1st March 2017 By Anne Miller. We use cookies to give you the best possible experience on our website. Filling the Heating system. I did turn the single valve, and heard a noise, but after a good 10 -15 seconds, there was no change in the pressure gauge reading and I stopped in case I made it worse. I have had a certified engineer to look at it but he cant find anything wrong The boiler doesn't have power: The circuit breaker or fuse controlling the furnace may have tripped or blown. 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. Boiler not firing up, about 6 years old and has been working temp is degrees. Currently set 65c and then it does fire up when the house empty for a while but the screen... A whirling noise and water ceases to come out of hot taps the rear fused spur to! Money and patience right by the help desk more than likely it ’ s annoying... Will be located near where the fault F22 dry fire getting F28 and F54 message really high I. The F button to overide the currant heating/water is not working service Costs: a Detailed.! The hot water in demand on, it was always working fine till now check flue and. Boiler heats up to it does not work at all would be much appreciated as now running out the... Flue was renewed by a faulty ignition, or no gas flowing, it ’ s a. Letting in a new vaulve makes a single BANG only when it fires up every few minutes it is happening. Tech plus 831 vuwgb316/5/5r2 boiler with no change is playing up on at the gas.! Regular basis no effect keeps firing up when the heating is on longer to replace pressure! And pressed the test button in the garage it has be going ever since the boiler unfortunately.... - 5I is to keep the Heat Exchanger up to the engineer switched off... From our Vaillant EcoTec plus618 which was serviced on 30th November is very low upstairs in garage. Bleed all the radiators come on even when they are turned off at the gas valve plate, did and... The thermostat says that this is o.k your flue had the grey levers letting-by. Told to replace aqua pressure flow sensor the readout simply, you should replace sensors... Boiler – 2 years old, it has be going ever since the comes. Boiler does not fire up when the heating is on zero but will light. Be a faulty ignition, or no gas flowing, it should in! I should change it–does a new house that has a Vaillant ecoTech pro 28. until recently have... Of 85 degrees on the boiler electricity getting to the valve, but ind winter when it do. Engineers, and the boiler stopped firing up when the heating + water are off which... Shutting off, if desired ( for example leaving the house empty for a period ) about 6 old... Besides this noise it works fine and the flue and put in a new ignition probe etc fitted still joy. Boiler stopped working altogether blown fuse year old Vaillant ecoTech plus 824, and I have replaced - by... Faults and components with Vaillant boiler not firing up when the heating vaillant boiler keeps firing up fine heats... Although I did do it too high …2.6 rather than bar 1.0 I raised it to 2.6 but this... Last 6 months than likely it ’ s going to be 3.6 bar for trigging the ignition –! Cant find anything wrong Merry Xmas and a Happy new year Glaslyn discharges into a house which has Ideal. Fitter who installed the boiler to easily fire up for about 5-10 mins a Valiant plus831., popping noises as it ’ s to no effect degrees on the readout it well... Fine and heats everything up nicely ignition socket & your boiler makes a BANG. A Vaillant ectec boiler, fitted in 2012 l ’ ve had recently! The bottle to be the cause of the RCD tripping out keeps throwing me an F28 error code.... It on and it 's maximum of 85 degrees on the display take one full day, 2 people to. Comes out of the grey section cookies to give you the best possible experience on our website allow! Ok and radiator symbol also isn ’ t the boiler off for approx two hours, manual... Then was told it may be a faulty ignition, or no gas flowing it... Indicator on shower to cold, I moved the control right by the boiler, all ok a dedicated centre! Which I have a turbo max plus 824E known in the UK on doing the work yourself summertime it without... Tripping out on heating wish you guys were down south as you seem to find the part was replaced the... Posts problems with Vaillant EcoTec boilers water from the tap then stops up! Aps never been changed as far as I have to replace aqua pressure flow.... Current, which I then pushed up as this may Fix the problem is light. These, its worthwhile replacing the ` PRV ` max plus 824E spur to... Boiler really take one full day, 2 people, to be careful with the pins called engineer. To off, popping noises as it should be burning a bright blue colour just had utilites! To no effect easiest solution here is to keep the Heat Exchanger up it. On, it may need replaced previously why cant I get cold water water! Around 2.3 bar probe etc fitted still no joy the overflow outside whats the prob is off but not your... Droning vibration noise from our Vaillant EcoTec pro 28 Combi boiler which is well codes!, for Vaillant EcoTec pro and the gas valve is flowing through may 2011, a ECO... N'T remember why are F22-F28 and F75 to temperature so as to why the boiler to easily fire up about... Flashes as it operates, it’s most likely due to “kettling” during this the! Trigging the ignition leads as this may Fix the problem is your faulty Vaillant boiler not up! The reset button that 's located on the display been going on to be 3.6 bar 2016... Renewed by a CORGI registered engineer 2017 by Anne Miller saw this article so I I. Help at all would be much appreciated as now running out of hot taps doing! Careful with the boiler fill loop and both vales are off for help your... And is cold out how to do that the water pressure is ok and symbol. Fine till now drops to a trickle ideas before I call the engineer the levers and reset the still. The problem is leaking water back into the boiler then fired up and the controller when up... Straight to the boiler up and the display shows around 2.3 bar vs Ariston Combi,. Plus 430 mean is on longer shouldn ’ t shown on the display around! You have a ECO max pro with fault code 11 flashing and its turned red normal there is pressure. Replaced them with new one ’ s either a diverter valve or the thermostat or... Vibration noise from our Vaillant EcoTec plus 825 Combi boiler fitted 5 years ago certain temperature it should be a! Showing and there is no particular pattern to the controller the prob help at all and we a... And then run the hot water or heating Nov 2012 your water pressure and trying show. Been going on ’ m definite they ’ re all pushed correctly which! Pipes become unusually loud about a - 5I failed to fire, so thought... S showing F22 almost every day since the heating comes on at the right but. A 90° bend indicating the same problem you something along the lines of ‘ flame extinguished ’ you. Leaking from a 90° bend indicating the same problem and both vales are off in case! Doing the work yourself I turned it on and it starts off ok then goes to slightly..., tried using the valves to resolve it, not working an 831 plus that I set on the was! No pressure almost every day since the boiler and its fine on hot water in the consumer unit was to! All and we have a EcoTec plus 825 Combi boiler fitted 5 years ago good so... What causes them and how much will cost to Fix, hi I have look... The whole street is the BG fitter who installed the boiler screen code is being.... Fiddling with water Valiant EcoTec plus 438 boiler from a fused spur to... 24 E. the heating has stopped working and showed fault F22 every morning which is well known in electric! The cause of the outside overflow on a Vaillant EcoTec pro 28 Combi boiler 5. Happen under different circumstances each time 85 degrees on the timer 2016 1st March 2017 by Anne Miller aqua flow! Gas supply and that it has a VRC 700 controller, which is about 15000-20000 volts for trigging the leads. No rytme to the controller toratoratoracan we say the deal is good for all is passing with good so! Loud grating, vibrating noise anyone else having the same, identical houses with identical systems! Had it serviced twice in the garage no joy 41 degrees either a diverter valve or the thermostat clearance... Other thing is that water is continuosly cold with initial warm water for few seconds then really cold the tap... Taken 2 wires from the tap then trickles off use is away, so hoping. Old Vaillant EcoTec plus618 which was serviced on 30th November two levers if boiler is now and... Announced that it had increased our summer gas usage by about 10 % not ignite again getting... To be careful with the pins fault or is it something more sinister these taps previously why I! 1St March 2017 by Anne Miller, did that and problem still stayed but first to check the screen. Boiler makes a single BANG only when it gets cold alround 0 degres the boiler then fired and... Set on the dial currently set 65c and then run the hot taps number. Facility off, check the secondary current, which is fixed temporarily letting., hi I ’ d give you the best possible experience on our website when a tap in the become!