Not only this, it’s likely that even if freed, the problem (sticking, as a minimum), is going to happen again soon. 2 October at 4:19PM in In my home (includes DIY) MoneySaving. Thanks for reading our 3-minute guide to boiler gas valves. The PCB is the heart of your boiler. Depending on the fault with your Ideal boiler, you might not need a heating engineer but if you’re in any doubt whatsoever, don’t hesitate to hire one. All being well, your gas valve should adjust to suit hot water and heating demand. Considering this, if you are able to diagnose the issue and take a few preliminary steps before you book a repair, you could save the engineers time and … 9. Due to the cost of labour, the cost of a repair in this case isn’t a financially viable option. And, as they start to wear, they become prone to sticking. That heat exchanger then is used to heat water. While we always recommend calling a trained engineer to help with boiler problems, many technicians charge by the hour. 5. 1. For some faults, the boiler locks out to protect important boiler components from damage (for instance, lack of water, causing the pump to work harder than it should). Your email address will not be published. Gas off at boiler gas valve. Gas off external to boiler. We’ve been to properties where the engineer has jumped to conclusions and replaced the gas valve. Improper … The Fix. 21 replies 403 views Livinlovinlaughin Forumite. The problem here, is the gas valve might still be stuck open. Speak to your engineer and see if there’s a non-OEM (but high quality) gas valve, like Honeywell, that’s compatible with your boiler. This Weil McLain boiler troubleshooting guide explores common problems and steps you can take to identify and possibly solve them.. Keep in mind the risks associated with boilers – severe burns, gas explosion and the risk of shock. They don’t just stick partially open (letting-by), they can get stuck in any position (fully closed/open). However, the time taken and the cost of these kits usually means replacing the valve is a better option. Although the gas valve may also be at fault, the PCB needs to be fixed too. So, always speak to a Gas Safe heating engineer, and don’t attempt to fix your boiler on a DIY basis. As you can imagine, a gas valve that’s leaking gas into your boiler isn’t safe at all. For instance, the Vaillant F62, Worcester 234 or Baxi 133. What, what could be wrong with your gas valve? Even when there’s a small possibility of a repair, it’s unlikely your boiler engineer is going to take the risk, especially when this part is one that can essentially, end up in a boiler letting-by gas. If there isn’t any gas making its way to your boiler, your system won’t have the fuel necessary to heat your home’s water. For more boiler problems please click here . If these connections are loose or damaged, that’s going to result in intermittent signals being sent to the gas valve. As we’ve already mentioned, not all boiler faults are what they seem. After all, it’s the PCB that controls these components and displays the fault code in the first place. 5. If your boiler is 5 years or older (especially if it’s a lower quality brand), it’s likely the gas valve is beyond repair. A much better option would be to get your boiler repair company to replace the valve. No electrical supply to burner. 5. This creates weak (or incorrect) signals and the PCB may think the gas valve is off (and vice-versa), even when it isn’t. 7. This fault is less commonly seen and if you are seeing either of these fault codes there will probably be one clear issue: you won’t have any hot water or heating supplies. They could to relate to the gas valve being stuck, letting-by, or more frequently, something along the lines of “flame detection, even when there’s no demand for gas”. It’s controlled by an electrical signal coming from the printed circuit board (PCB). The parts they should be checking include: If the gas valve and 2 or more of these other parts are in poor condition and your boiler is out of warranty, it’s likely a boiler replacement is the most cost-effective solution, not a repair. Whilst it might seem like the gas valve is incorrectly adjusted, not responding, or letting-by, this might be due to the signals it’s being given by the PCB. Gas valves last for years, so once a replacement is fitted, it’s likely to outlast the boiler, unlike a repair on an excessively worn part. You can replace the gas valve, although, unless your water heater is not working at all this should not be needed. Here is a list of the most common boiler issues, what causes them, and what can be … A faulty However, that’s not possible if it’s been incorrectly adjusted. Lochinvar boiler troubleshooting | All . Take a look through the most common Ideal problems and how to fix them. If they find any section of wiring damaged, connections loose, or faulty components, they’re going to need to be replaced for the gas valve for be operational. Required fields are marked *. When the need for gas in the burner increases, a communication is sent from the PCB to the gas valve, which opens and allows gas to flow through the valve in to the pilot assembly or the burner dependant on the model of the appliance installed. If someone has previously tried to fix a gas valve fault, it’s likely they may have tried to change the adjustment on the valve. HeatingForce is reader-supported. Your email address will not be published. Any boiler fault is potentially dangerous, especially any problem that relates to gas. So, the cost of parts is going to have a direct impact on the cost of the overall valve replacement. If the leak stems from your pressure relief valve, it is likely that your system’s pressure has become too high. Once your emergency boiler repair company arrives, they’ll check over the gas valve. Faulty gas control valve. When the valve gets stuck or seized it will either: When this happens, your boiler will show a fault code. 8. Replace if necessary. Sometimes when people go on vacation or leave their home for an extended period of time, they’ll close their gas control valve for … If this wasn’t the problem, and they failed to put the valve adjustment back to its original setting, this is what could be causing the fault. Gas valves can be found on gas furnaces, gas fired steam boilers or hot water boilers, and gas … Whilst the meter regulates the flow of gas into the mains and to the boiler, it’s the gas valve that controls the flow of gas into the burner and pilot jet. No Hot Water. You might have noticed the LED lights on the display panel flashing, the boiler cutting out before getting up to temperature, and hot water working when the heating doesn’t (and vice-versa). Although there are many scenarios where the gas valve on your boiler can be fixed, that’s not always going to be the case. Gas Boiler problems? Your boiler repair company will be able to take apart the valve and hopefully, they can free it to a point where it operates smoothly again. A boiler engineer will be able to run checks to see if a faulty diverter valve is the cause of the problems, or if there is another underlying issue. If you can smell gas, it’s wise to turn off your gas at the mains. When there’s a problem, this supply can be interrupted, causing faults that relate to a lack of flame, loss of flame, or flame instability. Boiler thermostat set too low. Common Boiler Problems: Causes and Quick Fixes . If your gas valve has only recently started having issues with the sticking (in any position), there’s a good chance it can be salvaged. Resetting your boiler should only be done when the problem has been found and fixed. The main control board can detect if the gas valve is not connected and will display the Gas Valve or Gas Valve Fail fault. In this 3-minute guide to boiler gas valves we’ll quickly explain how these valves work, common problems, as well as the potential replacement and repair costs. If you require an emergency call out for your boiler repair, the cost can vary depending on the time you require an engineer to visit and the company your using in question. 8. Do not disconnect the wiring from the gas valve and attempt to measure voltage at that point. On/off switch is in 'OFF' position. Understanding the components of a hot water boiler can help with basic troubleshooting. Find out more about high pressure in our boiler pressure article. We use cookies to ensure that we give you the best experience on our website. If this is the case, you might see a range of fault codes being displayed. No hot water from your Potterton boiler is not necessarily caused by a faulty diverter If there’s a problem with communication or power with the PCB, this could be the root cause of the problem. In this scenario, it’s likely the valve is beyond repair. You can save money by resolving certain boiler problems yourself. Because gas is involved, problems with gas valves are a major safety concern. Replace the wiring if necessary. And, we say £300, because the cost of parts for different boilers, varies a great deal. If all else fails, it’s likely the valve is faulty, or beyond repair. If it’s a case of simply freeing the valve due to it being stuck open/a closure fault; this could be less than £100. Pilot partially blocked or needs adjusting. Faulty gas control valve. But, when your boiler locks out due to a gas valve fault, the idea is to make your boiler safe; continued operation could mean gas is being leaked into the burner. Always ensure your engineer inspects all the most expensive parts of the boiler, before replacing the valve. It makes little sense to spend money on labour, only to have a repair company back to then replace the valve. A typical gas valve replacement price will be around £300 including parts and installation. The thermostat cannot be replaced independently from the gas valve. If it is, they’ll be able to assign the correct level of adjustment and reset your boiler to clear any fault codes being displayed, so your boiler is fully functional once more. Start boiler using Lighting/Operating Instructions. If the gas valve is the only component causing issues, it’s likely a £300 replacement valve (or, a cheaper repair), is the most financially viable option. The closure fault mentioned above, could be due to an electronic issue, but it also could be to do with the gas valve sticking. While they are more reliable than gas boilers, they are not always perfect so from time to time electric boiler users can find themselves with no hot water. After having a water meter fitted last week, my Ideal Logic + Combi 30 boiler has stopped working. As the source of central heating and hot water, a functional boiler is essential to any British home – particularly during the colder months. And, due to the cost of a PCB replacement (upwards of £450), combined with a gas valve fix or replacement, you’ll need to think carefully as to whether a replacement boiler might be the better option. All plans include: annual boiler service, all parts and labour, unlimited support and 24hr helpline. Vaillant F28 / F29 Boiler fault. If your unit isn't producing any hot water, it could be a number of things. That gas is then ignited by the pilot light and the jet flames heat up a “heat exchanger”. If 2-3 expensive parts in a boiler are worn, it makes sense to invest that cash into a new boiler, not an old one. Instead of occasionally causing issues, restricting the flow of gas, or providing too much, it’s going to stick or seize completely. Before completely writing off the gas valve, a Gas Safe engineer will be able to check the wiring, connections and operation of the valve. You see, during normal operation, when a gas boiler receives the call for heat, the gas valve opens and releases a small amount of gas into a sealed combustion chamber via small “jets”. Gas Valve Thermostats. Call a boiler repair company and turn off your appliance. In this article, we’ll cover the most common problems with gas valves, any available fixes, and what you should expect to pay in terms of repair costs. Other types of gas valves include the standing pilot gas valve. If the gas valve and 2 or more of these other parts are in poor condition and your boiler is out of warranty, it’s likely a boiler replacement is the most cost-effective solution, not a repair. This reacts to you changing your thermostat and turning on taps. You may experience a lack of heat or hot water due to And, if you’ve got any questions about gas valves, leave a comment below. Gas Valve Troubleshooting - Gas valves used in a modern state of the art residential gas furnaces are typically controlled via a state of the art electronic ignition control or a printed circuit board. The first thing your boiler repair company will want to do, is run a quick visual inspection. 2. If your boiler is 5 years or older (especially if it’s a lower quality brand), it’s likely the gas valve is beyond repair. Many of the problems you encounter with gas boilers, you will not encounter with an electric one. However, your boiler should lock out and display a fault code when it notices a problem. The gas valve on your boiler will open and close, attempting to provide the burner with the correct level of gas. However, whereby a replacement valve can be purchased from the likes of Honeywell, this price can be reduced (they sell some valves for under £90). If the fan isn’t operational, the air pressure switch feeds back this information to the PCB, and the boiler will lock out. ; Temperature pressure relief valve … If you do need a replacement, you should expect to pay somewhere in the region of £300, including parts and labour. However, if your boiler is old, out of warranty, and has problems with other parts, it’s likely a replacement is the most financially viable option. Any fault code that relates to an electrical part (such as the gas valve) might not be as accurate as you think. Likewise, many gas valves are generic. The SE Water meter man has been back to look at it and said it is nothing to do with the meter. It is likely that the valve has simply become stuck over time and needs to be cleaned using a commercial chemical cleaner, after which it can be refitted. Boiler repair costs will vary greatly based on the problem and rates charged by the installer. If you’ve noticed a whole host of other problems alongside a gas valve related fault code being shown, the PCB could be the culprit. Call a Gas Safe engineer and leave the fixing and resetting of your boiler, to them. They’ll be able to test both, using a multi-meter. However, they’ll need to rule out wiring, connections and the PCB. In most scenarios, the gas valve can be freed and refitted. With Boiler Guide you can get free boiler repair quotes from engineers near you. There are repair and reconditioning kits available for boiler gas valves. In turn, that’s going to result in intermittent operation of the valve, fault codes being displayed, and the boiler locking out. And once you turn heating or hot water off, it asks the gas valve to close. 6. On the flip side, gas valves for Glow-Worm boilers can be as cheap as £100. The boiler gas valve problems and faults, here we have Q & A or require an engineer for an emergency boiler repair. If by calling an emergency engineer to come out and fix your boiler immediately, you may find if you require a gas valve, you should expect then to carry one unless they are full aware of the make and model and that you require a gas valve already as every company may have different terms. Boiler gas valve replacement costs are usually determined by the cost of the valve itself. 6. If you work on a boiler without this accreditation, it’s not just dangerous, in many cases, it’s illegal. Without these signals, they don’t know what to do next, and the PCB doesn’t know what they’re doing currently. 3. If there’s a closure fault with your valve, that’s going to mean that it’s “letting-by”. 7. 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