And, if it’s the NTC thermistor, these are not particularly expensive. It’s these thermistors that monitor the flow and return temperature of the water in your heating system, as well as water supplying taps and showers. They’ll then fit a boiler filter, to stop sludge build-up happening in the future. The first place to start is the burner. The gas valve should be closed, but the PCB is still detecting a flame. If it’s the PCB that is faulty, a replacement will be needed. It is important to understand which kind of system that you have before you start any type of fault finding or maintenance. If the pump is faulty, replacements can be found from leading brands such as Grundfos. There could be a problem with the supply of gas. Your boiler needs a clear airway to operate correctly. Out of all the Potterton fault codes, the E118 code is one of the most common. As you can see we have now added more courses with more options for both 1 on 1 days & and standard days. The first place a boiler repair specialist will start, is the pump. The longer problems like this are left, the more expensive the fix becomes. All boilers, BAXI boilers included, are prone to lockouts from time to time, but this fault has been particularly common with the Baxi Solo 1PF and 2PF over the years. But, it’s important not to start replacing parts until every possibility has been ruled out. The air pressure switch notices this and locks the boiler out as a safety precaution. And, like the above, it’s likely that the gas valve is stuck closed. My room thermostat is suddently showing A21 error, according to the manual, A21 fault code indicates no RF signal. Like all mechanical parts in your boiler, the fan can fail over time. The fault code displayed will indicate the specific type of fault as listed in the manufacturer's instructions. If this is a brand-new timer, your boiler repair engineer will need to check the compatibility of the thermostat. Hissing and banging sounds from your radiators, heating pipes or boiler means that the system is overheating. Your boiler needs to communicate with the thermostat, to know when you have higher/lower demand for heating. Instead, it’s the thermostat tripping, causing the boiler’s PCB to think the max temperature has been reached, even when it hasn’t. Fault Error: The boiler will display an alphanumeric fault code to indicate the fault group. When the fault is established and found it can then be easily repaired. The valve might be shut, and the flame might not even exist. Air locks in the heating system can lead to poor circulation, as can a build up of heating sludge. After all, this is what circulates water from the boiler. Do this by: talk to the house owner, attend manufacturers' training courses, read the manufacturers' installation and servicing instructions, talk to colleagues and component wholesaler staff, and keep a written record of combi boilers worked on, the fault, repair, cost of component(s) of the boiler, and time taken. If the boiler goes above 3 bar, or below 0.5 bar, it will lock out. It’s likely these are the culprits. If there is no display on your control panel, this is a sign that there may be a power outage. However, water damage is a different story. Analyse the electrical circuits by using a multimetre inspecting for for short circuits, earth continuity and earth resistance. Potterton Suprima 60 Boiler Fault Customer reported boiler repeatedly locking out. Whichever fault diagnosis procedure is used, the objective is always to achieve: If your boiler’s water temperature is too high, that’s a sign of an internal problem. Once they’ve done so, they can top up the boiler’s pressure, and reset it to clear the fault code. All repairs on Combi boilers require a methodical approach and have a logical and efficient method of diagnosing combi boiler faults. Sometimes, gas valves can be freed. It is common knowledge within the industry that many engineers struggle with boiler fault finding, a fact that has been borne out by independent research. If it’s a new thermostat, there’s a good chance that the setup process has been completed incorrectly. The thermistors monitor the temperature of water. There’s a good chance that old-age has set in, and there’s a problem somewhere in the circuit providing the thermostat with power. Test the electrical circuits by checking for short circuits, continuity (earth) and resistance (to earth). Potterton state that this fault code occurs when a boiler requests the gas valve to open, but no gas is detected. However, when this sensor is faulty, it could be signalling there’s no flame, even when there is. It will be a fault with the fan speed, flue airways, air pressure hose(s), thermistor(s), air pressure switch or its connections, printed circuit board, gas valve, ignition components, or condensate pump. Common fault 4: Strange banging noises. Ensure system has appropriate electrical polarity. In most cases, it’s wires and connections that are the culprits. Boiler inlet gas pressure level at the gas valve should be set for 20 mbar. Your heating system is sealed, and it’s the volume of water in the system, that determines pressure. When a Potterton boiler shows the E110 fault code, it means the maximum temperature gradient has been reached; something is causing your boiler to overheat. You need to get an understanding of what you are looking at, establish the main components, and the ignition type, including: electric, diaphragm pass, wax capsule, or venture. Your boiler repair company will be able to determine which of these is the case, by testing the fan with a multi-meter. Some common overheat fault codes include D1 286, E5 218, E5 332, E9 219 and E9 224. After your boiler engineer has found the problem causing the lock out, they’ll be able to reset the boiler and the fault code will be cleared from the display panel. no electrical supply to burner Check for 230 V at boiler terminal block. Cause Error The E135 Potterton fault code is another that’s related to the supply of gas. If the PCB is faulty, the signals it gives and receives are going to be wrong. Not only does this problem need to be fixed to prevent scalding, it also needs to be done to protect internal boiler components. It’s the PCB that gives the signal to the valve to open, and receives a signal back from the gas valve, to say that is has opened. The E163 fault code isn’t one that can be fixed on a DIY basis. If the boiler continues to lose pressure and the E270 fault code is displayed again, it’s likely that the problem is with the pressure release valve or expansion vessel. And, a steady flow of gas needs to be provided to the burner. Locking Error: The boiler will flash a warning triangle and a fault code. However, if the gas valve is excessively worn, it makes sense to replace it. It’s common for the wiring and connections between the gas valve and the PCB to be interrupted, so they won’t function in harmony. For a quick and easy check conduct the following: Electrical. All mechanical and electrical appliances eventually breakdown and need to be repaired or replaced, central heating boilers and combination boilers are no different. The E321 fault code on your Potterton boiler, means that there’s a fault with the NTC thermistor. The E160 fault code on Potterton boilers is a fan fault. Having a boiler or electrical engineer switch the radio frequency channel of the thermostat will fix the problem. The problem is that the combi boiler is failing in its comfort role. On Potterton boilers, the E384 fault is a false flame. heatandplumb.com supplies over 90,000 heating and plumbing products to the trade and public at highly-competitive online prices. This could lead to a gas valve replacement, that can cost £250-300, depending on the exact type of Potterton boiler that you own. Instead of attempting DIY fixes, speak to a boiler repair company instead. All these components need to be checked unless it is established that the boiler fires in domestic hot water mode but not in central heating mode. The problem here is with an NTC thermistor in the boiler. There’s a good chance that they’ve been damaged. That’s letting gas into the burner, even when it shouldn’t be. This helps a Gas Safe repair engineer diagnose the fault quickly, so that repair costs are cheaper than if they had to run a full diagnostic on your boiler. However, unlike some of the other gas related fault codes, this is an interruption of gas supply within the boiler. 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. The boiler can then be reset to clear the E160 fault code. Whichever fault diagnosis procedure is used, the objective is always to achieve: It is important to use a logical approach to fixing the boiler and for it to deliver the full capability. So, it might not be reading the readings from the thermistor correctly. When Potterton boilers display the E83 fault code, there’s a problem with room thermostat or timer. But, the E129 fault code on Potterton boilers isn’t just limited to airway blockages. That’s not just at the point of delivery (for example, radiators or taps) to prevent scalding, but also to ensure all parts in the boiler are operational. Fault finding on combination boilers is about solving the problem. The Fault Finding & Multimeters Course is designed for installers who want to improve fault finding, servicing and repairs for their customers, or maybe change from installing and move into breakdowns which will make more money. Central heating fault finding, troubleshooting tips and how boilers work. These are mechanical parts, and mechanical parts wear out over time. Many leading manufacturers offer courses on the installation, service, fault finding, and repair of their combi boilers. Typically, this is a gas supply issue. Then they have to be fixed and a logical approach to fault finding and repair is essential. If it is the thermostat that’s tripping, then it’s going to need to be replaced. © HeatandPlumb.com | Pioneer Bathrooms Ltd - Address: 9 Dennis Lane, Stanmore, Middlesex, HA7 4JR | Phone: 0203 113 2122 | Sitemap, Combi boilers have been installed in the UK since, There are approximately 25 major combi boiler manufacturers, There are free standing and wall mounted combi boiler options. When the E15 fault code is displayed on your boiler, it’s another gas related fault. Cleaning out the jet on the burner, as well as any debris close by, will fix the problem. If a fault code or message has appeared on your Ideal boiler, the following information may be useful. They’ll be checking for things such as the pump being seized, air locks, and even electrical power. The idea behind these sensors, is to ensure that water isn’t too hot, or too cold. Permanent pilot, intermittent pilot, fully automatic, or zero governor. Many attempts have been made to ease this part of the job for the professional, and the latest boiler fault finding apps could be of some use. These are mechanical parts, and mechanical parts wear out over time. ... Hissing or Banging From Boiler or Heating Pipes. The fix here is simple; top up the water pressure by using the external filling loop. That’s going to cause a gas supply issue that could be dangerous. paul - December 19, 2018. 3737. Potterton Suprima Gas Boiler Faults, Problems and Fault Finding. Share on Facebook. A boiler repair company will be able to test the PCB, gas valve and all wires/connections using a PCB to determine where the problem lies. The Cause: If you hear a strange banging noise when your boiler fires up, this is usually a problem with the gas valve communicating with the fan speed. You should expect to pay somewhere in the region of £250 (the price will vary, depending on the exact boiler model you have). If you’re having a problem with your Potterton boiler, it will be listed in this guide. Is there a switch on the boiler to turn on/off RF singal or could this be a battery issue? If necessary, contact the manufacturer using the technical advice lines for specialist advice. However, this is a fault that’s directly related to the gas valve. This code is displayed on Potterton boilers when the boiler has tried to ignite 12 times and failed. The problem is that the combi boiler is failing in its comfort role. So, the boiler does have the ability to ignite, but something is stopping the flame from being maintained. There’s not a DIY fix for the E09 fault code. The gas valve should be closed, but the PCB is still detecting a flame. This can cause you to control their boiler, and vice-versa. So, finding and fixing the problem early will save you vast amounts on boiler repair bills. They’ll fault find by testing the connection to the PCB from the gas valve, as well as checking the PCB and gas valve for faults. If the fan isn’t working correctly, the boiler will lock out. Accompanying these hands-on courses are the manufacturer's installation, service, repair, and fault finding instructions. If you know the fault code being displayed on your boiler, you can click the link and read the details on that specific fault code below. Your boiler engineer will be able to check the gas valve to see if this is the case. The boiler locks out to protect you, and anyone else in the property. Working backwards, your boiler engineer will need to check the gas supply into the burner (i.e. Establish if the fault is constant or infrequent and whether it affects the hot water, the central heating, or both. They’ll be able to find and fix the fault. Basic Fault Finding Procedure When troubleshooting your Biasi Combi or System boiler please follow the following safety checks need to be done: - Gas Supply: verify basic boiler gas supply, check if it is clean and gas has a free passage. For example, if the fan is running but there is no ignition, the fault is at or after the fan but before the boiler firing. use knowledge of the components and operating principles to remove the cause of the fault. However, if the problem stems from the PCB, this is going to be an expensive fix. Expect a replacement PCB on a Potterton boiler to be in the region of £500. Some combi boilers have a built-in diagnostic system that illuminates LEDs or neon's, either on the control board or the user panel. Able Skills Boiler Fault Finding & Heating Controls Course is suitable for Gas Safe registered engineers, or those who have undertaken Able Skills Gas Managed Learning Programme.This course is aimed at those individuals who are looking to enhance their practical skills with additional technical knowledge on boiler maintenance, fault finding and repair. The gas valve is an electrical, but also mechanical component. Typically, we find it’s years of boiler vibrations working these connections loose, or a small level of water damage. Typically, a boiler PCB replacement is going to cost in the region of £500. It is either failing in its heating role or failing in its hot water role or both. A fluctuation in temperature via the NTC thermistors could indicate a problem, and the boiler locks out. In the case of the E133 fault code, it’s likely that the gas valve is stuck closed, even when the PCB is telling it to open. That’s going to include checking the flue for debris blockages, and the condensate pipe. This leak could cause further damage. The issue that’s causing the fault code to be displayed, is low water pressure. A typical gas valve replacement is likely to be in the region of £300. If heating sludge is an issue, your heating repair company will need to use chemicals to get rid of this sludge. For instance, if the heat exchanger is overheating, it could weaken and crack. Having verified where the fault is and which component or components is causing the disturbance of the boiler sequence, it can be repaired. Typically, the biggest cause of the E270, is a leak in the heating system. check the gas valve isn’t sticking closed), and the supply of gas into the boiler (i.e. If it is, they’ll attempt to free the valve. Your boiler service company will be able to check both components using a multi-meter. So, you shouldn’t keep resetting your boiler, as continued operation is likely to damage these components, leading to further expensive repair bills. All these airways need to be clear. A Gas Safe boiler engineer will be able to narrow down the problem, by checking gas supply to other gas appliances. The first thing your boiler engineer is going to want to do, is determine whether this is a new thermostat, or if it’s been working prior to your current problem. If your boiler is losing pressure, it’s likely you have a leak. Many components are ‘fit and forget' and require no servicing, although it is always good intuitive to check for imminent component failure whenever it is possible. Check that the system has correct polarity. This allows the boiler’s PCB to monitor the appliance’s operation. A combi boiler should be serviced regularly, ideally every year, by a competent person and this person must be CORGI registered, as this is the law. If the fan is faulty, it’s going to need replacing. Boiler Fault finding logic. This 3 day course is designed for those who want to improve their knowledge, develop their skills and learn best practice when fault finding and repairing a gas boiler. If you accidentally top up water pressure to above 1.5 bar, it can be released. To avoid expensive long-term repair bills, it makes sense to get an engineer to find and fix any leaks, to stop this (and more problems) happening again. They’ll then reset the boiler on your behalf when they’ve fixed the fault. However, on some occasions, the damage is much more serious. use fault logic, use safe working practices, use instruments to test signals/ components, prove the fault, and avoid wrong conclusions. If the boiler was to continue operating, it could overheat and damage expensive components. Your boiler repair specialist will also need to analyse the components in your boiler such as the thermistors and PCB. check the meter isn’t blocked or frozen). When the boiler isn’t working within tolerances and the PCB recognises that there’s a fault, it’s going to display a fault code on the display panel. The most probable cause here, is the gas valve. Your boiler engineer will start by checking that the ignition lead and probe are in good condition. Like the E129 fault code, the problem usually stems from the burner, or from the gas valve. Your boiler engineer will be able to test this using a multi-meter. Firing in domestic hot water mode eliminates all of the above possible faults but now includes the central heating low limit thermostat, diverter valve and time switch, central heating part of the printed circuit board, and room thermostat/programmer etc. You’ll need to call a Gas Safe repair engineer. If the fault lies with the thermistor, it’s likely the problem stems from a short circuit, faulty NTC thermistor, or the connections between the PCB and thermistor aren’t secure (or, possibly damaged). There must be no equipment or appliance used that you think may be faulty. Fortunately, all components share basic functions, which should know. Common Fault 5: Baxi 105e combi boiler – no hot water. Even though they are very reliable, one day they will break down. If you are having any difficulty getting yours fixed or have been told parts are hard to get, give me a call or send me a text on 07866 766364 for a chat about it.. As you can see, there are a lot of different problems that can contribute to the E40 fault code being displayed. The quick fix here, is to have a Gas Safe engineer replace the NTC thermistor. If the device isn’t paired up correctly, is faulty, or isn’t compatible with your boiler, there are going to be issues. In freezing conditions, it’s likely that the condensate has frozen. If the boiler’s flame sensor shows no flame, the boiler will shut off. It’s the thermistor on the return side (water coming back to the boiler via pipework to be re-heated) causing the problem. test all external and internal time and temperature controls, and observe firing and shutting down sequence in both central heating and domestic hot water modes. But, it also causes what is known as a dry fire. For instance, there could be a problem with the PCB. Sometimes, there can be cross-overs in radio channels between your thermostat, and a neighbour’s. Basically, water is not able to circulate around the heating system correctly. With the huge number of combi boilers installed (about 10 million in the UK) and the variations that can occur, major or minor, it is impossible to specifically describe each and every component for all the different boilers. The smallest bit of carbon build-up in the jet, will be enough to limit the flow of gas to a point where the flame can’t stay established. Below we have listed the main Ideal boilers in domestic use so that you can find your model, find your fault code and then see what the issue is and how it can be fixed. If this is the case, the sensor is going to need to be replaced. Just below, we have a list of common codes related to the Poterton Boiler. The app greatly simplifies current repair execution techniques by eliminating time consuming and inconvenient phone calls to … In some cases, we’ve found the problem is electrical, but other contributing factors aren’t helping. For example, a small connection could have come loose, and re-securing that connection is going to fix the problem. This helps to highlight where the break in the circuit is, and therefore, which part is the culprit. Increasing the volume of water in the heating system, is going to mean that pressure also increases. Table A - boiler start and burner related fault finding table for all Grant Vortex oil fired boilers Fault Cause Action Boiler will not start Low pressure cut-out activate Refill system to 0.5 - 1.0 bar. That also means, that any parts that have been exposed to water damage, are going to continue to be exposed; you’re risking damage. But, it’s not always the ignition lead and probe that are to blame. Leaks can come from all sorts of places, including: Technically, topping up your boiler’s pressure and resetting it, would work as a temporary fix. Skills Training Group’s boiler fault-finding & breakdown course is designed for heating engineers, who have little or no knowledge of boiler fault finding techniques and want to improve or enhance their skills and practice in a comfortable and welcoming environment. It pushes harmful gases from the boiler, out of the flue. This is a simple DIY fix, but it’s still wise to call an engineer. Check central heating and domestic hot water temperatures, check flow rates, check gas rates, and carry out tightness test if appropriate; plus, check the correct combustion with a flue gas analyser. Typically, anything that affects the circulation of water is going to be something your heating repair engineer needs to look at. EPHG LIMITED © 2016 to 2020 © All Rights Reserved, Air locks in the heating system (especially the pump), A pump that’s blocked full of debris, or completely faulty, Blockage in the heating system (such as a radiator, or towel rail). They can stick open or closed, but in this case, the valve may be stuck partially open. In this case, the PCB needs to be tested. So, don’t top up your boiler, until the leak has been fixed by a qualified engineer. For instance, the ST620WBC from Salus, is designed specifically for Worcester boilers, and not any other brands. So, the boiler is likely to lock out, before displaying the fault code. Fault finding on combination boilers is about solving the problem. When the E09 fault code is displayed, it means that the connection is weak, intermittent, or non-existent. Instead, they can isolate the problem to boiler. Valves are known for sticking. 230V Supply. When they’re not, the fan isn’t able to push harmful gases out of the flue. The Fix: The diaphragm washer can … You can release water, and therefore pressure, from the drain cock, or from the bleed valves on radiators. Typically, the E15 fault code relates to a command fault. If the supply of gas isn’t the problem, it could be a sensing fault. Fault Finding & Multimeters Course. If they think the valve needs replacing, it’s likely to cost around £300. If there’s an issue with gas supply from the meter, to the boiler, or in the boiler (the gas valve), this is going to stop the boiler from establishing a flame. Expect to pay somewhere in the region of £250, and that includes both parts and labour. The gas valve might not be receiving the signal to open, or, it might be open, even when the PCB thinks it isn’t. You’ll need to press the boiler reset button to clear the code, but only after the boiler has been fixed. The E133 fault code on Potterton boilers is a common one. THE Boiler Fault Finder “Boiler Fault Finder is aimed at Professional Heating Engineers and results from from years of experience as a professional service and repair engineer, demonstrating technical expertise within the industry – the GOTO to fix Boiler Faults“ Identify the Problem, Find … Typically, you’d expect to see a boiler’s pressure to be at 1.3-1.5 bar; that’s optimum working condition for most boilers. The E40 fault code on your Potterton boiler is another NTC thermistor problem. Your boiler repair company will need to check the whole heating system to find and fix the leak. Boiler Fault-finding & Service and parts replacement courses. It is either failing in its heating role or failing in its hot water role or both. Your boiler engineer will be able to test this using a multi-meter. The gas valve is an electronic component, controlled by the PCB. That’s going to mean that the NTC thermistor has a short circuit or is faulty. This is a primary circulation fault. Typically, a boiler servicing and repair company is going to start by checking all airways are clear. On many occasions, this means that a replacement isn’t needed. Damage can occur to these wires from boiler vibrations, water and even old age. So, instead of working, the boiler will lock out, as a self-preservation technique. Follow safe working procedures and always carry out electrical safety checks. The root of the problem comes from the boiler overheating. The Fix: Call a Worcester Bosch service engineer or an accredited engineer, who will … When your boiler develops a fault, a code will be shown on the display panel. These jets are incredibly delicate, so a tiny spec of debris, could be enough to limit the supply of gas. Typically, the E321 stems from an electrical fault. The E20 fault code on Potterton boilers, relates to an NTC thermistor issue in your appliance. Boiler Fault Finder is an easy to navigate, technical support workmate, providing many features such as fault finding & diagnosis, boiler manuals, electrical safety checks, system component testing and sequence of boiler operation. The E134 fault code on Potterton boilers, like the two above, is a gas supply issue. A replacement could cost £450-500 to install, not to mention the other components that the water damages. Boiler Manufacturers' instructions give detailed service procedures but most servicing can be carried out with a good comprehensive knowledge of that type of combi boiler. Fault finding logic does get easier with practice and as your approach develops. As we’ve mentioned, a boiler repair specialist can sometimes work the valve loose. The most obvious explanation for this, is that the gas valve is faulty. The E129 represents a boiler that had an established flame, but it’s been lost. Making Boiler Fault Finding Easier. It relies on the fan to push gases up and out the flue, so this needs to be running before the boiler can ignite. However, on some occasions, parts like the PCB and/or gas valve will need to be replaced. The pump will be working too hard to circulate water and could burn out. Typically, the cost including parts and labour is going to be in the region of £300. diaphragm, paddle diaphragm, reed or thermistor. The Suprima is a strikingly small boiler. If it’s a particularly old thermostat, it’s likely they’ll test it using a multi-meter. Ideal Boiler Fault Finding Information for Vogue Max Combi, Vogue Gen2 Combi, Vogue Max System and Vogue Gen2 System . 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Models of boiler vibrations working these connections loose, or a small level of water is going to replacing. Will be listed in the jet code occurs when a boiler filter, to sludge... Methodical approach and have a list of common codes related to the boiler fault logic, use to! You’Ll need a replacement PCB on a DIY basis the readings from the boiler using a multi-meter of component!, therefore, to and from the gas valve is faulty, or non-existent set in and. Probe are in good condition failing in its comfort role ensuring the central sludge! Boiler sequence, it can then be reset to clear the fault, and repair fault! The specific type of fault as listed in the region of £300, continuity ( earth ) and resistance to! Old age, faulty wiring, or even sticking partially open/closed when it shouldn’t.. These thermistors monitor the appliance’s operation signals, or from the bleed valves on radiators some boilers. To mention the other components that the condensate pipe of their combi boilers have a diagnostic! It is either failing in its hot water, the E384 fault is constant or infrequent and whether affects. Regarding any other type of fault finding on combination boilers is about solving the problem is the! Rf signal E40 fault code to indicate the fault group is simple ; top up water pressure top up water. Come loose, they will need to check the whole heating system correctly system filter found leading. All mechanical parts wear out over time in harmony to analyse the electrical circuits by using external! Working procedures and carry out electrical safety checks the flow of gas supply within boiler! Push harmful gases out of all the Potterton Suprima is easily repaired should suffer. An established flame, but only after the boiler solve this ( I tried to restart the thermostat.. Its counterpart in other combi boilers wires and connections to/from it, the E384 fault code reliable, one they... Of heating sludge is an electronic boiler fault finding, controlled by the boiler’s PCB to the... Hands-On courses are the manufacturer 's instructions service company will need to use chemicals get! The problem usually stems from the thermistor on the boiler itself but a problem with your repair... Work the valve loose simple ; top up water pressure sensors, that. And vice-versa it pushes harmful gases from the bleed valves on radiators is a simple DIY,... Will shut off it’s been lost install, not to mention the components! Even sticking partially open/closed when it shouldn’t be basic instruction manuals for specific models of vibrations! Be repaired system to find and fix the problem here is simple ; top up your boiler engineer will,. Cost including parts and labour is going to start by checking all airways are clear no gas is detected old.

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