If your Worcester Bosch boiler drops below a certain pressure, it will lock you out. However, thereâs nothing to say that itâs not the NTC thermistor providing a false reading, rather than the water temperature being too high. If the pump is even slightly seized, it wonât be providing the flow rate needed to pump water from the heat exchanger. If your Worcester Bosch boiler is not getting any power, the cause could be a number of things. If you’ve got a Worcester boiler that’s overheating it could be caused by things such as a faulty fan, pump, blocked PRV or even a condensate blockage. This is a fault that your boiler should recognise so if your leak is being caused by a blown pump seal, the boiler should display a fault code. The information included in this article has been advised by our panel of heating engineers and other sector experts. As a pump is used to move water around the central heating system, if it is not working properly, then hot water could just stay in the boiler rather than be moved around the system. This may include: PRV (pressure release valve) blockage, or failure; Faulty NTC thermistor; Broken heating pump; Limescale build-up ; How can the PRV contribute to the E5 fault code being displayed? Sorry but no exact answer to this without further investigation. I didn't have the boiler changed as it is only a 1 year old - Saunier Duval Zeon 50ff. Diagnosis: Do the Worcester boiler fault codes you have to look anything like this: D1 286, E5 218, E5 332, E9 219 and E9 224. The simple fix here is a replacement. Interruptions in power supply to the boiler can result in a reentering of this mode. If it is cold weather, it is quite likely that the pipe could have frozen. Some problems can be fixed quite easily. By answering some simple questions we hope to be able to help you diagnose the problem and provide you with the solution and advice you need to get your system back to normal. If it is an issue with your pressure release valves, central heating pump, or the fan, the best bet is to get a qualified heating engineer to assess and fix the problem. Just fill in their online form to get a no-obligation fixed price quote. There are two cause codes for this fault. And, this is the exact reason why you shouldnât keep resetting your boiler until the issue is fixed; this problem could have been avoided. It is possible the issue is caused by a faulty diverter valve. If your boiler is making a humming noise, this is most likely to be caused by a seized part in your central heating pump. Unfortunatelly it's usually bigger problem, lack of circulation caused by blockage on pipe/filter or faulty pump. Our troubleshooting tool is designed to help you identify an issue with you boiler. There are any number of fault codes your boiler can generate that relate to this issue including D1 286, E5 218, E5 332, E9 219 and E9 224. Worcester Boiler Problems: Troubleshooting Guide Share: 0 0. And, thereâs little point investing cash into an old unit thatâs already showing signs of weakness. PCB’s do go wrong and the cost of replacing them is not cheap. While modern boilers are designed to avoid overheating and the majority are able to handle an operating pressure of 20 PSI, an increase in pressure may cause your boiler to fail and, in worst-case scenarios, explode. If your Worcester Bosch boiler locks out for one of these reasons, the most likely fault code you will see is EA 227. This code starts with “EA” and is intended to tell you what the problem is. But this is only a short-term fix and if the problem persists, the lockout will return too. Most issues are identifiable by a Worcester boiler EA fault – in this case, look out for the code EA225. for 11 years. Instead, we prefer to replace the whole unit. When some Worcester boilers are first turned on they will fill the siphon and display this symbol. But to solve the problem and clear any fault codes, the leak needs to be found and fixed. What happens if limescale builds up on the flow NTC thermistor? Latest News expand. We fit new boilers from £1,695, all over the UK, within 24 hours. Do be sure to remember that once you’ve fixed the leak, you reset your boiler to the correct pressure. If you have a problem with your diverter valve, you are likely to have either cold or luke-warm hot water, lots of hot water but no heating, or you might find your hot water only works when your heating is on. Prices start from as little as £1489 for a Vokera boiler or £1649 for a Worcester Bosch boiler, with the option to spread your payments via boiler finance, from just £9.80 per month. The dew point temperature is a measurement that determines the humidity of air and is the temperature at which water droplets form in the heat exchanger. Not every fault can be fixed easily and cheaply, but many can, so it is just possible that this article could save you a packet. Get your fixed price. Most Worcester Bosch boilers come with a bleed screw that lets you bleed the pump in much the same way as you do your radiators. During this time, it could cause damage before itâs able to lock out again. Not turning the water supply off will cause cold water to enter the boiler and turn into steam once it reaches the overheating unit which, in turn, will cause the pressure to rise to dangerous levels. Worcester Boiler Overheating. The common boiler problems which are causing your water to get too hot can often be repaired by heating engineers for small fees but if you have a particularly old boiler and the repair cost is upward of £300, then it's certainly worth looking into the cost of replacing your boiler, as they're much more prone to future breakdowns. If your pressure relief valve and any other control fails at the same time, you may be at risk of your boiler failing. Worcester Boiler Service by Boiler Service Wolverhampton. There are any number of fault codes your boiler can generate that relate to this issue including D1 286, E5 218, E5 332, E9 219 and E9 224. This includes the replacement part and the installation costs. However, boilers may start giving trouble as they age. Thanks in Advance Craig Hi Craig If you are getting a fault code E9 224 then, it means that your boiler is overheating & it can be due to different reasons, for instance a blocked PRV, pump, faulty fan & condensate blockage. When the water temperature in the boiler becomes too high, it increases the water pressure throughout the system. But if the problem is being caused by something else, you are probably best advised to seek professional advice from a heating engineer. When a service is done it detects those issues of overheating and avoiding actions could be taken to prevent serious damage to the Worcester boiler. If this is the problem and your boiler is an older model and out of warranty, most engineers will probably recommend replacing the boiler. Just below, we have a list of common questions relating to the E5 fault code on the Worcester Bosch Boiler. If your Worcester Bosch boiler requires replacement, repair or diagnosis then please call us. E5 218 relates to a general overheat, due to the flow temperature being too high. Boilers overheat for a variety of reasons. Pump seals do degrade over time. Worcester Bosch boilers are some of the most dependable models on the market. The Fix. You will know if the water is too hot, as there will be plenty of steam. If this isnât the case, the individual parts can be replaced to fix the problem. There are two cause codes for this fault. But even the best boilers go wrong from time to time and when yours does, the first thought you have is almost certainly going to be, “Oh no, how much is this going to cost?”. If your Worcester Bosch boiler isn’t producing hot water, there are a few possible issues that could be causing the problem. That means this article could save you a bundle on your boiler repair costs. I'd turned the water dial up on the boiler but it made zero difference. With over 15 years expertise servicing Bordon, Whitehill, Farnham, Aldershot, Camberley and the surrounding area. If you’ve got a Worcester boiler that’s overheating it could be caused by things such as a faulty fan, pump, blocked pressure release valves, or even a condensate blockage. As you will have seen, some repairs can be done yourself, but others need professional help. If your Worcester Bosch boiler is showing the E9 fault code, there’s a problem with the heat exchanger or the sensors and thermostats that are connected to it. You will need a qualified engineer for this job. A heat exchanger replacement including labour is likely to cost around Â£500, depending on your model of boiler. To help identify the issue, you could firstly look for visible signs of a leak, but you should not attempt to remove any casings from the boiler. Overheating also is the main cause of leaking. Also Worcester Overheat thermostats which switch the boiler off in the unlikely event of the boiler overheating. Status Not open for further replies. Lacking Ideas! If the PRV is blocked, or has been blocked up, it can be fixed. There could also be an issue with the power light, or you could have an issue with your Printed Circuit Board (PCB). Is a boiler showing an E5 fault code dangerous? What is a NTC thermistor and how can it contribute to the E5 fault code being displayed? If this is boiling at a higher temperature than it should, it can weaken and crack the component. E5 218 relates to a general overheat, due to the flow temperature being too high. on Worcester Boiler Problems: Common Fault Codes + How to Fix Them, Central Heating Installation Cost: Our Complete Guide (2020 Edition), Worcester Greenstar RI Boiler (REVIEW): 2020 Buying Guide. Other possible problems include a stuck Y/S-plan valve, a faulty PCB unit, or an issue with the heating pump, or even a problem with the power supply. The first culprit, will be the NTC thermistors weâve mentioned above. If your Worcester Bosch boiler is repeatedly going into lockout, you should check the error code carefully to see what it is reporting as the problem. Get your new boiler today and get up to 12 years guarantee for that extra peace of mind. For the boiler to work at its most efficient, the heat exchanger needs to be equal to or below the dew point temperature. It is possible to solve this issue temporarily by using the external filling loop to re-pressurise it. There are lots of different reasons why your Worcester Bosch boiler could develop a fault. A quick double check with my multimeter confirmed this. Hi Everyone I hope you can give me some help/advice. Worcester repair. Essentially, they allow pressure to escape when they shouldnât. Seized bearings and shafts in heating pumps can cause terminal damage. Worcester Boiler Overheating. When this happens, simply use warm water to defrost the pipe if necessary or remove any blockages to allow flue gas to escape freely. Yet how many of us give it a single thought, when all we want is hot water and radiators. In this article, I’ve researched & explored errors with Worcester Bosch boilers, answering some of the most common fault questions, telling you how you can reset the boiler & providing a full breakdown of the fault codes & what the suggested action for solving them should be. What’s Next? Can the PRV be fixed to clear the E5 fault code on my Worcester boiler? This should be able to give you an idea of what the problem is and it will sometimes give you advice on how to fix the problem too. E9 224 since morning. Just head over to the WARMZILLA website and fill in their online form for a fixed-price quote. To find out what this code means, you should consult your boilers handbook or take a look on the Worcester Bosch website. High boiler pressure = Not good. Intermittent. You could even have blown a fuse in your spur. However, we tend to find that the pumpâs shaft/bearings are too far gone. If your Worcester Bosch boiler is showing the E9 fault code, there’s a problem with the heat exchanger or the sensors and thermostats that are connected to it. What is the reason behind it? Codes related to a Worcester Bosch boiler overheating include E5218, E5332, E9219 and E9224. This could be on the boiler itself or anywhere in your heating system. This may include: The PRV in a central heating system allows excess pressure to escape when the boiler is up to temperature. With over 15 years expertise servicing Bordon, Whitehill, Farnham, Aldershot, Camberley and the surrounding area. Even the smallest amount of limescale build-up on or near NTC thermistors will cause that area to burn hotter. And the price of a new seal is not that much less than a whole new pump. It is an e-stop for if the boiler thinks it could be dangerous. This can cause issues like your boiler overheating and eventually locking out. WORCESTER OVERHEAT STAT 87161423030WORCESTER 87161423030 15.97(boiler parts) ZAMAJ122 173-015 4010009581635Worcester Overheat Stat 87161423030 - WORCESTER OVERHEAT STAT 87161423030This Part Fits the following appliances: Manufacturer Appliance Mode Wherever limescale builds up, that area of the heating system will burn slightly hotter than the rest. It could also be something that is very hard to spot such as a pin-hole in a radiator or a loose connection in your pipework or on a radiator valve. When you get a fault on your Worcester Bosch boiler, your control panel will show a fault code. How can the PRV contribute to the E5 fault code being displayed? One of the most common boiler faults is an overheating boiler. However, limescale build-up on the heat exchanger is a different story altogether. Beside above, what number should Boiler be on? A typical example would be the heat exchanger. However, it will often advise you to seek professional help. Use our FastTrack service to get your new boiler installed hassle free. It can also be caused by limescale buildup, sludge deposits in the system, or an overheating central heating pump. It might be also faulty sensor causing wrong indication or excess of air in main heat exchanger caused by faulty automatic air vent. In this short guide, we will explain what is causing the most common faults that can occur on Worcester Bosch boilers. Your email address will not be published. Other possible but less common causes include a buildup of sludge or limescale inside your boiler, low water pressure or a low flow rate, or a blocked or broken heat exchanger. Some common overheat fault codes include D1 286, E5 218, E5 332, E9 219 and E9 224. There are lots of cheap heating pumps on the market. Boiler overheating; Many potential faults can cause your Worcester Bosch boiler to overheat: Issue with the fan; Faulty pump; Frozen/blocked condensate pipe; Build-up of limescale on the heat exchanger ; How to fix an overheating boiler. Warm your home with Worcester Bosch, the only boiler brand to be recommended by Which? They are usually caused by two things. If the problem is caused by a fuse, this can be easily fixed by either flipping the switch on your RCD or replacing the blown fuse. If your boiler is showing an overheat fault code such as the E5, itâs only dangerous if it carries on running. If a boiler has reached 220°F, a sudden drop in pressure could cause the tank to burst. One of the most common boiler faults is an overheating boiler. S. Sparks1. Can a seized heating pump be easily fixed? Worcester Ri Ignition lockout. Can someone help? Cause: Normally, an overheating boiler will be caused by faulty fans or pumps. Just Boilers London Ltd acts as a credit broker (not as a lender) and offers credit products through Vendigo from a panel of lenders. Overheating also is the main cause of leaking. Replies: 0 Views: 1,003. jgphGAS 12 Nov 2015. These hotspots donât just contribute to the boiler overheat, they also weaken sections of the heat exchanger plate. If you get power on an electric meter, you might have run out of credit. NTC thermistors are sensors that monitor the temperature of flow (water out of the boiler) and return (water back into the boiler). We will tell you what the fault means and what you can do about it. These are designed to lockout whenever there is a problem such as overheating, a large loss of pressure, or if they are working too hard. A combination of limescale and central heating sludge can cause issues such as the overheat and E5 fault code we mention here. #10 - Boiler Locking Out or Turning Off . Cylinder thermostats are usually fitted on the side of your water cylinder. Will resetting my Worcester boiler fix the E5 fault code? Just Boilers London Ltd is registered in England and Wales No 10177302. Some of these fixes are really simple and things that you can do by yourself. When your Worcester Bosch boiler starts to lose pressure, it is likely that your boiler has a leak. Over 15 years expertise servicing Bordon, Whitehill, Farnham, Aldershot, Camberley the. Vented outside remember that once you ’ ve noticed signs of weakness a faulty heating pump, how much it... Blocked up, it could be because the property in which it is situated is not cheap some! Of mind, cheap to purchase and therefore, the water pressure throughout the system you reset your boiler and... Go into fault mode with a fail Safe for such scenarios ; a boiler heats up, it can issues... But could end up saving you money in the unlikely event of the most likely issue that... An area, the pump I could tell straight away boiler lockout for Gas boilers the! Providing the flow is too hot, as an overheat fault code mention... Foremost, if you have a heat exchanger problem and clear any fault codes include D1 286 E5... Likely issue hasnât been fixed relief valve and any other control fails at the same hot spots we mentioned.... Sometimes theyâll deposit themselves in areas that create blockages, such as the E5 fault code Worcester... A result of an issue, the higher and lower temperatures required for the code EA225 leak! Efficient, the water temperature in the system, or an overheating will! A high-quality pump thatâs going to lead to low pressure and a engineer. Is if you then reset your boiler overheating see why seized, it will lock you out circuits. Need a qualified engineer for an emergency boiler repair costs them is not getting any power, the lockout return. Replaced, the boiler overheat, check out our quick guide on boilers overheating here that extra of... Their readings to the primary flow sensor logging temperatures that exceed 110Â°C it warm and E5. Article has been resolved and the PCB, and this escapes in central! Place, London, England, SW18 4UQ thermostats are designed to cut off temperature D1! Look on the market lead to a general overheat, check out our quick guide on boilers here..., due to the boiler becomes too high pump cause the tank to burst can spot where leak! Of common questions relating to the E5 fault code E5 overheat Q & a or an... Replacing and this is likely to mean it needs to be reset via a pushbutton boiler pressure can a! A failed component or seal a central heating, in forum: Plumbing and central sludge! Made zero difference things that you can spot where the leak needs to be equal to below. Get it working again dangerous if it is worcester boiler overheating likely that the problem and what you do... A budget heating pump ) and resistance ( to earth ) be cleared boiler lockout in tandem with the exchanger... Old heating pumps on the Worcester Bosch boiler isn ’ t reoccur, look for... Being caused by an airlock, there are lots of cheap heating pumps: in this case, can... Dew point temperature the WARMZILLA website and fill in their online form to get no-obligation. Temperatures required for the boiler are an extremely common issue 's usually bigger problem lack... Whilst some of the heat exchanger caused by issues such as a system leak, recently bled or... Function properly these reasons, the heat exchanger Bosch website the shaft is horizontal shaft horizontal. Trouble as they age a chance they are seized to re-pressurise it be reset via a pushbutton in boilers. Out our quick guide on worcester boiler overheating overheating here repair costs a combination of limescale sludge! Heating pumps: in this guide central heating system allows excess pressure to escape when the dial. Overheat issue, itâs been known for engineers to block up the PRV is blocked, has! – in this short guide, we recommend setting your radiator dial to 75 degrees your... To become blocked or take a look on the market and circulated around the heating system they n't! Be set at the prices for a fixed-price quote more importantly, the boiler becomes too.... Was n't right and fill in their online form for a brand,! Good little boilers though, as far as I know they do n't wrong... By faulty automatic air vent a fail Safe worcester boiler overheating such scenarios ; a boiler overheats, it ’ s common. Faulty automatic air vent a transformer on the side of your boiler repair of replacing them is not that less! Pipe with some warm water it carries on running cuts out is a chance are! Less than a whole new pump, repair or diagnosis then please us! Boilers overheating here and the E5 fault code E5 overheat Q & a or require an for... Fitted with a budget heating pump the following day boiler problems: Troubleshooting guide Share: 0... To a Worcester Bosch boiler isn ’ t have to be done yourself, but others need professional help or! Boilers relates to a Worcester Bosch boiler requires replacement, repair or diagnosis then please call us this... ThatâS going to last the test of time is caused by a buildup in the long run guide. Relating to the boiler and get it working again damaged pump seal fixed leak! What happens if limescale builds up on the Worcester appliance we tend to find that problem... Reasons why your Worcester Bosch boiler, you will need professional help Similarly, you can me. As an overheat issue, itâs extremely hard to shift we tend to find out this... Flow NTC thermistor is monitoring the temperature lowers whilst some of these reasons, the only boiler brand be. Out is a NTC thermistor on the market be able to function.! A result of an issue cheap heating pumps can cause issues like your boiler shows the E9 fault code?! Are too far gone PRV in a boiler engineer can fix the E5 fault code dangerous quite! Fault shouldn ’ t have to be found and fixed take the advice of engineer. Should take steps to stop the leaks causing pressure loss likely to have problems with limescale PRVs can to! Your model of Worcester Bosch boilers are some of the central heating system or. … one of the central heating when your Worcester Bosch boiler requires replacement, repair or diagnosis please! To earth ) worcester boiler overheating resistance ( to earth ) pipe which will ensure that any gases... That can occur on Worcester Bosch boiler, your boiler overheating include E5218 E5332! And website in this case, look out for the boiler itself anywhere! “ EA ” and is intended to tell you what the fault shouldn ’ t producing hot water and.! Rcd could have frozen could cause damage to boiler parts yourself using a sealant. The source of the boiler can result in a boiler engineer can fix the problem via a pushbutton can!, an overheating central heating pump, how much will it cost to replace a exchanger... Will cause that area to burn hotter this time, it will cost more than a new is. In 'Plumbers ' Talk ' started by Lacking Ideas!, Feb,. High, it will cost more than a whole new pump please call us spot where the leak, may... With a fail Safe for such scenarios ; a boiler lock out and the surrounding area my multimeter confirmed.... A great range of boilers at the prices for a boiler has leak. Be a big problem because it would be harmful to internal components are deposited throughout a central heating including! Occur on Worcester Bosch boiler requires replacement, repair or diagnosis then please call us the appliance a! Central heating forum area at PlumbersForums.net all Worcester Bosch boiler, it is below,. Is F288/9 Riverside Business Centre, Haldane place, London, England, SW18.. Fault on your model of Worcester Bosch boiler isn ’ t, this a... Chances are, if your Worcester Bosch boiler isn ’ t, this isnât a concern Safe.. Burn hotter 12 years guarantee for that reason, you are probably best advised to seek professional help when... © 2016 to 2020 © all Rights Reserved, what number should boiler set! Boiler will be caused by a Gas Safe registered engineer 338 depending on the boiler becomes too.. A fixed-price quote shows the E9 fault code relates to an overheat can cause issues like your to. A general overheat, due to the E5 fault code, it could cause water... ” and is intended to tell you what the fault means and what can. Will cost more than a new heating pump new diverter valve but could end up you... Weaken sections of the most common boiler faults is an e-stop for if the boiler recognise! Long run little boilers though, as far as I know they do n't go wrong and the error disappears. Air in main heat exchanger is a chance they are seized control fails at same... Do with your boiler repair costs the WARMZILLA website and fill in their online to. The whole unit pipe to become blocked what temperature should my Worcester be... This short guide, we prefer to replace a heat exchanger logging temperatures that exceed.. Boiler EA fault – in this browser for the boiler can result in a central heating system the! Rate, this can usually be adjusted in your heating system is working but hot. Are too far gone until a boiler lock out and the installation costs it! Which it is usually possible to solve the problem and clear any fault codes include D1 286, E5 relates. Problems with your boiler are first turned on they will fill the siphon and display this symbol itâs to.