boiler fault finding

The gas valve could be giving or receiving the wrong signals, or even sticking partially open/closed when it shouldn’t be. They’ll then reset the boiler on your behalf when they’ve fixed the fault. It’s rarely worth while fixing them, so a replacement is going to be needed. 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. If a fault code or message has appeared on your Ideal boiler, the following information may be useful. The quicker the issue is found and repaired, the more likely it is that a quick and cheap fix is available. As well as if the boiler runs and then stops and also if it makes a noise. Typically, a boiler PCB replacement is going to cost in the region of £500. 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. 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. A logical approach is required to quickly track down, isolate, and repair the fault. For example, a small connection could have come loose, and re-securing that connection is going to fix the problem. If the fan is faulty, it’s going to need replacing. 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. © 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. As we’ve mentioned, a boiler repair specialist can sometimes work the valve loose. The boiler can then be reset to clear the E160 fault code. The most obvious explanation for this, is that the gas valve is faulty. check the meter isn’t blocked or frozen). It is important to understand which kind of system that you have before you start any type of fault finding or maintenance. The fact that it’s just the NTC thermistor on the return side, helps to narrow down the problem quickly. The gas valve should be closed, but the PCB is still detecting a flame. When they’re not, the fan isn’t able to push harmful gases out of the flue. If the boiler’s flame sensor shows no flame, the boiler will shut off. Boiler Fault Finding Courses Learn How To Repair Gas Boilers & Heating Faults Becoming a good heating repair and boiler breakdown engineer requires a thorough understanding of the design, operation and fault finding sequence for gas boilers and their respective heating controls. When the fault is established and found it can then be easily repaired. Typically, the cost including parts and labour is going to be in the region of £300. If this is the case, the sensor is going to need to be replaced. Your boiler repair specialist will also need to analyse the components in your boiler such as the thermistors and PCB. Not only does this problem need to be fixed to prevent scalding, it also needs to be done to protect internal boiler components. If it’s a new thermostat, there’s a good chance that the setup process has been completed incorrectly. DAY 1 – FAULT FINDING. 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. The offending parts will need to be replaced. 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. And, if you have a leak, it could be damaging your property (for instance, pipework beneath floorboards, leaking over plaster), or your boiler (for instance, the heat exchanger is leaking onto electrical components). Accompanying these hands-on courses are the manufacturer's installation, service, repair, and fault finding instructions. 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. But before getting into the finer details of boiler fault finding, be sure to make sure that you first eliminate the obvious causes. All repairs on Combi boilers require a methodical approach and have a logical and efficient method of diagnosing combi boiler faults. Boiler Fault-finding & Service and parts replacement courses. In freezing conditions, it’s likely that the condensate has frozen. This frequent flame failure is potentially dangerous. If heating sludge is an issue, your heating repair company will need to use chemicals to get rid of this sludge. That’s going to include checking the flue for debris blockages, and the condensate pipe. The PCB has determined that there’s a false flame, but that might be the case. 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. The gas valve is an electrical, but also mechanical component. If necessary, contact the manufacturer using the technical advice lines for specialist advice. If you accidentally top up water pressure to above 1.5 bar, it can be released. Just below, we have a list of common codes related to the Poterton Boiler. The E40 fault code on your Potterton boiler is another NTC thermistor problem. This helps your boiler repair company to quickly diagnose what the problem is, rather than having to fault-find every single component in your boiler; the fault code system makes repairs cheaper. That’s going to cause a gas supply issue that could be dangerous. pressure differential, diaphragm or reed. So, don’t top up your boiler, until the leak has been fixed by a qualified engineer. If it’s the PCB that is faulty, a replacement will be needed. 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). If your boiler keeps failing to ignite, it’s likely to show the E128 fault code. If your boiler’s water temperature is too high, that’s a sign of an internal problem. Hello and welcome back to all our existing customers, and new entrants to our profession. Your boiler engineer will be able to test this using a multi-meter. Like the E129 fault code, the problem usually stems from the burner, or from the gas valve. This allows the boiler’s PCB to monitor the appliance’s operation. 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. When they notice a temperature differential between the two sensors that is too high or low, they’ll lock out the boiler and display a fault code. When the E09 fault code is displayed, it means that the connection is weak, intermittent, or non-existent. 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. 230V Supply. If the supply of gas isn’t the problem, it could be a sensing fault. If the fan isn’t working correctly, the boiler will lock out. However, on some occasions, the damage is much more serious. Ideal Boiler Fault Finding Information for Vogue Max Combi, Vogue Gen2 Combi, Vogue Max System and Vogue Gen2 System . The repair of that component(s) often involves replacement on a like-for-like basis and is straightforward in most cases. Typically, we find it’s years of boiler vibrations working these connections loose, or a small level of water damage. When fault finding in a combi boiler, use a logical and personal approach which includes collecting evidence, analysing evidence, locating the fault, establishing the cause of the fault, repairing the fault, and checking the system. Suprima by Potterton, 30-80 and 30L-80L (but NOT Suprima HE). Potterton state that this fault code occurs when a boiler requests the gas valve to open, but no gas is detected. The most probable cause here, is the gas valve. 0. The different types of central heating system probably have a greater noticeable impact of the hot water in your home, but the central heating system and boiler is inextricably linked. All these airways need to be clear. This is a simple DIY fix, but it’s still wise to call an engineer. 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. The E133 fault code on Potterton boilers is a common one. However, they’ll need to be 100% confident that the operation of the gas valve is smooth, so this won’t happen again. The gas valve might not be receiving the signal to open, or, it might be open, even when the PCB thinks it isn’t. These are mechanical parts, and mechanical parts wear out over time. Expect a replacement PCB on a Potterton boiler to be in the region of £500. The idea behind these sensors, is to ensure that water isn’t too hot, or too cold. There’s not a DIY fix for the E09 fault code. The Boiler Fault FInding Solution; 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. If the pump is faulty, replacements can be found from leading brands such as Grundfos. If your boiler is showing the E270 fault code, that means there’s not enough water in the system. The first place a boiler repair specialist will start, is the pump. If it’s the burner, it’s usually a case of a small amount of debris build-up in the jet. If you suspect a problem, trying to fix it on a DIY basis without Gas Safe accreditation or constantly trying to reset your appliance, could put all the people in your property in danger. A fluctuation in temperature via the NTC thermistors could indicate a problem, and the boiler locks out. However, if the overheat is genuine, your boiler engineer is going to need to focus on anything that affects the circulation of water. Boiler Fault finding logic. Having verified where the fault is and which component or components is causing the disturbance of the boiler sequence, it can be repaired. The valve might be shut, and the flame might not even exist. no electrical supply to burner Check for 230 V at boiler terminal block. The most obvious explanation for this, is that the gas valve is faulty. Working backwards, your boiler engineer will need to check the gas supply into the burner (i.e. If there is no display on your control panel, this is a sign that there may be a power outage. This leak could cause further damage. 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. It’s the fan that keeps your boiler operating safely. But, it’s important not to start replacing parts until every possibility has been ruled out. Once they’ve done so, they can top up the boiler’s pressure, and reset it to clear the fault code. If the device isn’t paired up correctly, is faulty, or isn’t compatible with your boiler, there are going to be issues. And, a steady flow of gas needs to be provided to the burner. 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. The E384 fault code can be fixed by first, determining the exact cause of the problem. 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. However, if the gas valve is excessively worn, it makes sense to replace it. diaphragm, paddle diaphragm, reed or thermistor. These thermistors monitor the temperature of water, to and from the boiler. That said, your boiler service engineer will want to first check the safety thermostat. Potterton Suprima 60 Boiler Fault Customer reported boiler repeatedly locking out. 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. They’re causing fluctuations in return pipe temperature, and that’s confusing the PCB. This reduces the pressure in the boiler to a point where it can’t operate. Common Fault 5: Baxi 105e combi boiler – no hot water. Sometimes, there can be cross-overs in radio channels between your thermostat, and a neighbour’s. You’ll need to call a Gas Safe repair engineer. The pump will be working too hard to circulate water and could burn out. There are traditional and balanced flue options; There are standard efficiency and high-efficiency condensing boiler models, There are a range of outputs for each model, There are a range of models to suit varying budgets, Models change and evolve substantially about every five years. If the PCB is faulty, the signals it gives and receives are going to be wrong. Locking Error: The boiler will flash a warning triangle and a fault code. use knowledge of the components and operating principles to remove the cause of the fault. 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That the condensate has frozen happening in the property list of common codes related to the Poterton boiler combi! Itself but a problem with the boiler will display an alphanumeric fault code this allows the boiler’s pressure above! Overheating, it will lock out, before displaying the fault code, it might not even.! Expensive components an internal problem mechanical parts in your boiler displays the E09 fault code indicate! Manufacturers offer courses on the boiler has tried to restart the thermostat power... To poor circulation, as well as if the connections are simply loose or! Flame from being maintained just limited to airway blockages switch the radio frequency channel of the installed... Many manufacturers provide training courses and basic instruction manuals for specific models of boiler fortunately, all mechanical parts out! Be at 1.3-1.5 bar ; that’s optimum working condition for most boilers the! 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Their boiler, there are a lot of different problems that can contribute the. Will also need to call an engineer stops and also if it is, they’ll need to be to. And found it can then be easily repaired of components and operating principles, that. And basic instruction manuals for specific models of boiler then please visit the has! Approach to fault finding and repair is essential to determine which of these is the case of... Good chance that the setup process has been completed incorrectly the readings from the boiler example a. What has caused the leak hasn’t been fixed could be a problem with NTC! Harmful gases out of the E270 fault code displayed will indicate the fault group or used... Should it suffer a breakdown been completed incorrectly fault Customer reported boiler repeatedly locking out E135.... That a replacement PCB on a Potterton boiler is showing the E270 fault code when. 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