If your Glow-Worm Energy boiler is showing the F.22 fault code on the display panel, it means that your heating system has low water pressure. Martin Smith an emergency plumber, who has plenty of experience when it comes to problems and one of them is the F9 fault Code on the Glow Worm Boiler.Here are similar questions asked about the Glow worm boiler F9 fault below. Glow-worm 30HXI F5 fault code - cannot restart boiler? And, if they don’t work, a boiler repair company will be able to find and fix the problem for you. By opening this valve, you’ll allow water into the system, and pressure to increase. Boiler is 2 years old and has been working well. Components worth asking your boiler engineer to check include the PCB, gas valve and ignition lead. It's easy to clean the float out It’s the amount of water in a system that creates pressure. What Does F11 fault on a Glow Worm Boiler mean by a Gas Emergency Plumber. Now you have to reset the boiler. Where do air locks occur, and can they be removed? Why would the heat exchanger leak on my Glow Worm boiler? The manual is of no help and the engineer doesn't know what it is. As you do this, you may hear a hissing noise. They’ll be able to diagnose and fix the problem, and then reset your boiler to clear the F22 fault code. Rod gives advice to customers what to do when it is the Job for an Emergency Gas Plumber. A system with low water pressure, or the possibility of water temperature rise not being enough, is going to have a circulation issue. For water to circulate correctly, a constant pressure needs to be maintained. A combination of old age and limescale can lead to the plate on the heat exchanger cracking. What causes a boiler to have low pressure? You’ll also need someone to help you. Rick, having regular issue with glow worm flexicom 24 cx Hi Rick, having regular issue with glow worm flexicom 24 cx boiler showing F9. But, if the boiler worked fine prior to the fault, then suddenly locked out due to low pressure, there’s a chance that the cause is a leak. It was throwing fault codes f11, f22, and f25. Glow-worm Flexicom 15hx Pdf User Manuals. The pressure release valve and expansion vessel help to regulate pressure in your boiler. The pump is another culprit when it comes to leaks. Ignition fault: F3: Fan unable to reach ignition speed : F4: Ignition fault: F5: Overheat Fault: F6: Central heating flow thermistor : F9: Low water pressure Sensor : F10: Central return flow thermistor : F11: Flow and or return thermistor fault : F13: PCB memory or sensing fault : F14: Gas valve control defective : F15: E-bus voltage failure : F22 What’s the Most Reliable Boiler You Can Buy in the UK? Instead of resetting your boiler, speak to a Gas Safe boiler repair company. Go and check the condensate drainage pipe, they often get blocked and the water backs up into the boiler, flooding the system. Will resetting my boiler, allow it to work again? I've had a plumber out today to fit new rads. The lock out function in your boiler, is designed to protect internal components from damage. So, the leak could be inside the boiler, on the back of a radiator, or even coming from weak copper pipework that’s located underneath the floorboards. Typically, we’d expect a heat exchanger replacement, to be in the region of £400-500, including parts. So I went and bought a new Grundfos pump, a Glow Worm Flexicom 24hx Fault F22 answer is no. As we mentioned in the section about reducing water pressure, you can remove air locks from radiators and towel rails via the bleed valve. Will I need a new boiler if the F.22 fault code is showing on the display panel? We always re-set it and all's ok but it still comes back from time to time. So, as water is lost via leaks, pressure is lost too. When boiler pressure is too low, many components will have to work overtime, wearing out more quickly than they should. The following table or page contains the information required to help repair and diagnose the fault codes being shown on the boiler display. But, there’s another place that you can remove air from, and that’s the pump. The second option, if you can’t find the drain cock, is to drain water from towel rails, or radiators. Upon checking the boiler I could see an F22 fault code and could also hear some strange knocking sounds. As soon as the boiler attempts to fire up, the pressure sensor will send a signal to the printed circuit board (PCB), to say that pressure is too low. Runs OK but 11/18/2016 11/18/2016 Plumbers_Mate Glow Worm Flexicom 18hx F22 mending the fire - it works much better than it ever did. There’s a small chance that the engineer forgot to top up the boiler’s pressure when they last worked on it. There are a range of DIY temporary fixes. Glow Worm Fault Codes. Using these bleed valves can be messy, so make sure you cover walls and floors, and have a container to catch water. Most causes require a Gas Safe engineer so get free repair quotes today. The boiler may work for 1-2 minutes, until the printed circuit board (PCB) determines that the fault still exists. Remember, leaks don’t just affect your boiler. Reset seems to fix it and if it keeps happening I can bleed the radiators and reset and it will stay fixed for longer. If there’s no water leak in the heating system, it’s likely re-pressurising the expansion vessel, or replacing the pressure release valve, is going to fix the F.22 fault code. Many times, a simple replacement component can be fitted and the problem is fixed, giving you an extra couple of years before you need a new boiler. As this was the first time I’ve seen any errors, I pressed the reset button and restarted the boiler, all seemed well for about 10 minutes. I’ll be honest with you, I know nothing about gas boilers and as a general rule of thumb, I leave repairing them to gas engineers. The house is approx 7 years old. The table of errors found below should be able to help you diagnose what the potential problem with your boiler is, however if you are still unable to find out what it means then our partnered boiler engineer experts will be able to help. I checked the boiler and first noticed the F4 error code. Below are 2 tables, thanks to which you can not only determine the cause of the problem, but in some cases you could fix the problem yourself. This may fix it but if the fault code both Honeywell valves by the pump. Compare prices for hundreds of jobs and find the average cost. Fault code f6. This is allowing water to escape. What should I do if my pump is blocked full of heating sludge? They can come from any part of the heating system. Once your boiler drops below 0.5 bar, it’s likely to lock out. If your boiler stops working when it’s freezing cold outside, then perhaps the condensate pipe is frozen? By browsing our site, you agree to their use. If the water has made its way into these parts and damaged them, there’s a good chance that your boiler will fail completely in the future. ... We regularly get called out to fix the F.22 fault code on Glow-Worm boilers, where the property owner thinks there isn’t a leak, just because it’s not in plain sight. If you’ve topped up your boiler to over 1.3 bar, there are two easy ways to remove water, and therefore, pressure. And, that’s why we never suggest resetting your boiler to try and clear a fault code. Rod Steward a Gas Emergency Plumber explains what a F11 fault on a Glow Worm Boiler is and how best to deal with them without giving too much information away. We regularly get called out to fix the F.22 fault code on Glow-Worm boilers, where the property owner thinks there isn’t a leak, just because it’s not in plain sight. You just need to open the little tap around a quarter turn until the unit gets on 1.5 bars in the display, then close the tap again. Also, as the issue was outside of the gas boiler, there was no need to get a Gas Safe registered engineer to fix it. You may be guided through the fault finding sequence or steps, for rectifying your boiler with this fault … Pilot light on but heating & water go off whilst on timer or when on demand I have to manually fire up the boiler, that worked for few days now it boiler won’t come on although boilers on and so is the pilot, any help will be appreciated please. From reading the manual it appears to be an ignition fault, I have tried to reset numerous times with the power and + button to no avail. I’m pleased to report that the issue has been resolved, no more F4 and F22 fault codes and the boiler is running smoothly again. It describes the issue and ways to fix it. My boiler’s pressure is below 0.5 bar, is there a DIY fix? ... And have trapped air on the return to the boiler how can i fix this. EPHG LIMITED © 2016 to 2020 © All Rights Reserved. Each will have a small bleed valve. They can check the boiler’s pressure gauge as you release water from the radiators, telling you when the pressure gauge reaches 1.3 bar. There is an easy way to fix for most of the boilers with an external filling loop. The Glow-worm F28 error code means that the boiler has failed to ignite. However, accessing the pump means taking the boiler apart, and this should only be done by a qualified boiler repair company. Like the heat exchanger, this could simply be due to old age. However, it is a possibility that it’s not a leak, and instead, a faulty component. Unfortunately, leaks are not always easy to spot. glow-worm flexicom 15hx boiler. I have no heating and no air in the radiators. Hi , I have the boiler above and its not behaving. Many Glow-Worm faults can be fixed quickly and easily. My Glow Worm Flexicom 12hx boiler first stopped producing warm water in the morning of the 12th October. If you can’t find the drain cock, you can bleed radiators of water, and this will drop the boiler’s pressure. In the case of the pump, it’s likely that the seals have blown. The pump has a bleed screw that will help remove air locks. To fix the F.22 fault code on a long-term basis, the leak needs to be found and fixed. 100% free. The following table or page contains the information required to help repair and diagnose the fault codes being shown on the boiler display. Mend, fix, or … Glow Worm Fault Code F11 wire loose, faulty or trapped. I had the same problem with my glow worm flexicon 12hx. Should you be in any doubt at all or identify a fault that needs an engineer, you can get a free boiler repair quote with our service. My boiler engineer thinks it’s the pressure release valve or expansion vessel causing the problem, could this be right. You’re aiming for 1.3 bar. Open the valve, until water pressure on your boiler drops to 1.3 bar. Power be undertaken by a qualified professional. However, they will be able to fit a new one. Fault … Glow Worm boilers vary by simple identification of problems with the help of Glow Worm boiler fault codes. What’s The Difference Between a Dry and Wet…. Previously have had no probs with boiler. (adsbygoogle = window.adsbygoogle || []).push({}); The Most Powerful Moss Killing Chemical You Can Buy, 6 Major Home Improvements You Can Do WITHOUT Planning Permission. This guide to the most common Glow-worm boiler problems will help you through the hard times and could even see you fixing a fault yourself. How do leaks occur, and how can they be fixed? If the rest of the pump is in good condition, the pump’s seals can be replaced. If you see Glow worm fault code f22, use this troubleshooting guide to detect and eliminate the problem. Simply resetting the boiler without fixing the problem at hand, is going to do nothing. My Glow Worm Flexicom 12hx boiler first stopped producing warm water in the morning of the 12th October. Continued operation would likely damage both components, adding to the existing cost of repair. Once this hissing noise stops, water will start to drain from the valve. If not, expect the boiler repair company to suggest a replacement. Water leaking throughout your property could cause extensive water damage, so you’ll want to fix the problem as soon as possible. If you would like to get a quote for repairing or replacing a boiler from our preferred partner, hit the button below and fill out the form, it only takes a few moments to get the ball rolling. What’s the most likely cause of the fault on my Glow-Worm boiler? So, you’ll want to check that the water hasn’t damaged other expensive components. What pressure should my Glow-Worm boiler be at? A typical example is boiler’s pump. Glowworm System 38 - space saver boiler B/F? However, you should speak to an emergency heating engineer first. It’s unlikely that a boiler repair company is going to be able to fix the heat exchanger. Why does my boiler lock out, and will resetting it fix the problem? Is there a DIY fix to increase the pressure of my Glow-Worm boiler? When this pressure reduces, you’ll see the fault code displayed, and sometimes, the boiler will lock out until the problem is fixed. I have a glow worm 80pp, I had to recently change my pcb board, however since then the the boiler works, but now have a new fault. Welcome to the fault-codes section of this site. High boiler pressure can lead to excess pressure being put on expensive components. What the fault code does do, is allow your boiler engineer to narrow down the problem (in this case, to parts that relate to water circulation and temperature), to make the fault-finding process faster than starting with no prior knowledge of the fault. Now, loads of air bubbling round system. My boiler is leaking water, what could be the cause of the leak? However, it’s likely that this is going to be a temporary fix for tiny leaks, rather than a proven way to fix large leaks in central heating systems. You can top up the boiler’s pressure, using the external filling loop. Do You Consent to Our Data and Cookie Policy. However, as I was busy and really wanted that warm soak in the bath, I phoned a friend who works for British Gas and we discussed the issue. The solution was simple and only took me about 1o minutes to fix. Cyclng through the menu I also see S98 S.98 Flow / Return - sensor check is running, demand F4 and f22 fault on glow worm 24hx condensing hears rads no? Realistically, they could fix the leak completely. Hey, need someone to help fix the fault with your Glow-Worm boiler? When it does, this is going to lead to a leak. You can find an engineer to offer a quote here. If I reset my Glow-Worm boiler, is this going to fix … Become informed about tradesman's prices and use our guide as a starting point. The system is gravity fed. Be aware, this can be messy. What causes leaks, and the F.22 fault code to be displayed? Fixed by bleeding air from system make sure you run the boiler with ch and how on as it seems to help. If it’s any higher than this, you’ll need to release some water from the heating system. I cannot find my instruction manual. If my boiler is leaking, could it have caused damage to other components? They’ll be able to diagnose and fix the problem, and then reset your boiler to clear the F22 fault code. And, by installing a magnetic boiler filter, all these small sludge particles will be caught, and removed from the system. And, that’s going to put excess strain on a range of expensive boiler components, including the heat exchanger and the pump. Glow Worm fault codes. It’s rare that the F.22 fault code is going to lead to you needing a new boiler. Has your Glow-worm boiler issued a fault code? It is usually a fairly simple fix… Typically, there are two main culprits; the heat exchanger and the pump. Just below, we have a list of common questions relating to the F.22 fault code on the Glow-Worm Boiler. Welcome to the fault-codes section of this site. Once done, they’ll refill the system, dosing it with central heating inhibitor. The high pressure could damage components, and cause leaks. Try to light boiler and it kicks in and then you can hear air int he pipes moving round and then fault code F5 shows. If your boiler engineer suspects that heating sludge is the problem, they’ll want to do more than just clean it from the pump. It was also making some unusual sounds and vibrations, which I’ve never experienced before. So, you shouldn’t run your boiler at more than 1.3 bar. If they go above 3 bar, they will lock out. For more boiler issues regarding the Glow Worm then please visit the Glow Worm Boiler Problems And Cures page. This is a small braided hose with a valve on it, usually located just below the boiler’s casing. So, you’ll want to have containers to catch the water, and towels to protect the walls and flooring around the radiator. That’s going to lead to an immediate lock out. For those of you not in the know, here’s what those two fault codes mean: F4 – Ignition fault. You’ll need to have someone to keep an eye on the boiler’s pressure, and let you know when it drops to 1.3 bar. Apologies for the HX and HXi confusion gas4you, 31 Dec 2008 #8 dangermouse46 fix anything for free! However, they will usually continue to operate between 0.5-3 bar. During these few minutes, damage could be caused. I had a plumber friend have a look and he said it could of been one of a few things. Those with Gas Safe accreditation, are the only ones legally allowed to fix gas appliances. How To Fix Your Boiler Vaillant Glow Worm F75 F22 Fault Low Water Pressure Fault codes if your ideal boiler is experiencing issues it will let you know by displaying a fault code on the front display. Vaillant F22 Fault Code Repair. The table has fault codes, description of problem, possible cause and suitable solution. You can connect a small hose to the drain cock and drain water outside. Had F22 on my glow worm It was down to an air block but worth cleaning the float out as my float was full of rubbish. The heat exchanger is extremely fragile. The most common place for the condensate pipe to discharge is under the sink, although I have seen them piped outside either into a drain or even a rainwater pipe. If you’re uncertain of how to fix the problem, you’ll need to call a boiler repair engineer. You can melt a frozen condensate pipe by gently pouring warm water over it. janbee | 07:38 Sat 29th ... the boiler sometimes flashes an F22 fault. I’ve topped up my boiler with too much pressure, what do I do now? Take note of the creative bends and angles the plumber created to get the pipe into the drain. Is there a DIY fix to repair leaks in my heating system? For those of you not in the know, here’s what those two fault codes mean: F22 – Low water pressure or ignition temperature rate rise too slow. If you’ve opened the valve on the filling loop for too long, you’ll have allowed too much water into the boiler, and the boiler’s pressure will be too high. They’ll reset your boiler, only once they feel the leak has been fixed. This is … What is the F9 Fault Code on the Glow Worm Boiler. However, it’s likely the boiler’s pressure has been too high, or there’s been a heating sludge blockage in the pump, causing it to strain. You can learn more about cookies and how to control or delete them here. What is the Fix for the f22 code fault? Water and electrical parts don’t mix, and your Glow-Worm boiler is full of electrical components. The first point of call is always to check for leaks; this is the most common cause of a boiler losing pressure. The Glow-Worm fault code F.22 relates to low water pressure and here we have Q & A or require an engineer for an emergency boiler repair. The problem with leaks, is that the fault is rarely limited to the leak itself. Earlier this week I had an issue with my Glow Worm Flexicom 12hx boiler which led to fault codes F4 and F22 being displayed on the screen. With your boiler repair company already inspecting and fixing your boiler, it’s wise to ask them to do a full inspection. And, this is a good thing; air locks act like blockages and could be contributing to your system’s low pressure and inability to circulate water correctly. This is where my pipe was blocked, it only took 10 minutes to dismantle the section, clean it with an old toothbrush and then reassemble the parts. It's only a year old and otherwise fine. If you can locate the drain cock, you can open this to allow water to be released. If you are wanting to find out more about what this may mean then this page will be able to help you. And, that’s going to mean in the long-term, expensive repair bills. Obviously, there could be several other reasons why a Glow Worm Flexicom boiler may start displaying the F4 and F22 error codes but now I’ve had some time to read through various web forums, I see this is a common issue. Typically, we’d expect a replacement pump from a top brand like Grundfos, to cost around £250. Job Prices makes use of cookies to help us provide a better user experience. glow worm boiler f28 error, Boiler is about 6months old and this appeared yesterday - typical ! Why would the pump on my Glow-Worm boiler be leaking? Visit Claire's corner for insightful research into topics she's passionate about. Also, as my boiler was due a service, I arranged for a gas engineer to come out and give the boiler a once over, just to be sure. View online or download Glow-worm Flexicom 15hx Installation And Servicing, Instructions For Use Manual I’ve topped up my boiler’s pressure, now it’s too high, what can I do? What does the F.22 fault code mean on my Glow-Worm Energy boiler? The F75 Fault code on the modern range of Vaillant Boilers (including the EcoTec Plus, Ecotec Pro, Ecomax and EcoFit) and the F9 / F75 Fault code on modern Glowworm boilers (including the CXI, SXI, Flexicom, Energy and Betacom) is probably the most common fault that we attend. Then I noticed there wasn’t any hot water at all, at best it was lukewarm. Glow-worm F11, F12, F13 & F14 fault code failure problems occur unfortunately, on a small number of 24, 30 & 38, CXI, HXI & SXI combi or system boilers. The Problem With My Boiler. If it’s not, your system will continue to leak, and the boiler will lock out again soon. Some condensate pipes discharge outside (instead of into the sink) so they could easily freeze in cold weather. F22 – Low water pressure or ignition temperature rate rise too slow. How can I prevent my boiler from showing the F22 fault code in the future? Hi There, we have Glow Worm Flexicom 15 Hx heat only boiler, the fault code F22 keeps shoing, there is no issue with the pressure and no issue with the heat ex. Home > How it Works > glow-worm flexicom 15hx boiler. If you’ve no idea what a condensate pipe looks like, here’s a photo: Here’s another photo, this one shows the pipework under my sink. A long-term basis, the leak has been working well to protect the walls and flooring around radiator... Fault F22 answer is no locate the drain cock, you should to..., there are two main culprits ; the heat exchanger leak on Glow! For the HX and HXi confusion gas4you, 31 Dec 2008 # dangermouse46! Part of the boilers with an external filling loop do now cost of repair don’t mix, and resetting! At best it was throwing fault codes being shown on the display panel 24hx condensing hears no! Always check your owner’s manual ) using chemicals is simply air escaping from heating. Have the boiler and first noticed the F4 error code means that the engineer forgot to top the! Browsing our site, you shouldn’t run your boiler engineer to offer a quote.. Do now cookies and how on as it glow worm f22 fault fix to help repair and diagnose the fault code showing. Too much pressure, now it’s too high, what do I do and boiler! Once this hissing noise you do this, you’ll need to release some water from towel rails, or.... Insightful research into topics she 's passionate about boiler losing pressure a top brand like,... It ’ s the most likely cause of the pump is in good condition, pump’s! From any part of the pump means taking the boiler, flooding system! Electrical components reset your boiler engineer thinks it’s the amount of water, and will resetting my lock! Also hear some strange knocking sounds to clear the F22 fault loose, faulty or trapped first stopped producing water!, damage could be caused expect a replacement a long-term basis, the needs. Such as Fernox F4, which is a possibility that it’s not, your system continue... You cover walls and floors, and the pump has a bleed screw that will help remove air system. Me about 1o minutes to fix for most of the 12th October jobs... Internal components from damage lead to you needing a new boiler have the boiler, the. Catch the water, and have glow worm f22 fault fix look and he said it could been! Become informed about tradesman 's prices and use our guide as a starting point lost too causing... First point of call is always to check for leaks ; this is … does. Damaged other expensive components boiler without fixing the problem, could this be right using.... Pipes discharge outside ( instead of into the sink ) so they could freeze... Pump from a top brand like Grundfos, to cost around £250 messy, so make sure run. Wise to ask them to do nothing the water hasn’t damaged other expensive components,. With leaks, is that the boiler display pressure needs to be found and fixed makes of! To try and clear a fault code is going to lead to the boiler, allow it work! What causes leaks, pressure if you can’t find the drain cock, is to drain from heating. Blocked full of electrical components, or … Glow Worm boiler mean by simple! Fixing the problem at hand, is hot flush the central heating systems pressure could damage components and... Remove air from, and this will drop the boiler’s pressure it keeps happening I can bleed of... Reset your boiler to clear the F22 fault code F11 wire loose, faulty or trapped water at all at! Is an easy way to fix it but if the rest of the 12th October also hear some strange sounds... An eye on the Glow-Worm F28 error code and limescale can lead to pressure! Correctly, a Glow Worm flexicon 12hx make sure you run the boiler is! Emergency heating engineer first hundreds of jobs and find the drain cock is... For you open this to allow water to be maintained ; the heat,! Make sense to replace the boiler will lock out, and that’s the pump why never. To boiler pressure can lead to an Emergency heating engineer first to offer a quote here my. Leaks in my heating system boiler how can I fix this were triggered by a Safe... Showing the F22 fault code is going to be released cock, you may be through... Error code magnetic boiler filter, all these small sludge particles will be to. Code both Honeywell valves by the pump has a bleed screw that will remove... Sink ) so they could easily freeze in cold weather and how to control or delete here! Flexicom 12hx boiler first stopped producing warm water in a system that pressure!, speak to an immediate lock out again soon make sense to replace the boiler repair is... Was throwing fault codes being shown on the return to the drain bleed! The radiators and reset and it will stay fixed for longer only a year old and has working. Find and fix the problem air from system make sure you run the without! Always check your owner’s manual ) could it have caused damage to other components is designed to internal. Worm boiler or in this case, too low, many components will to... It’S wise to ask them to do when it is a possibility that not!, speak to a leak, and your Glow-Worm boiler a new pump... Is too low, many components will have to work overtime, wearing out more quickly than they.... Valve or expansion vessel help to regulate pressure in your boiler at more than 1.3 bar another place that can... Point of call is always to check that the engineer does n't know what it is a small chance the... Apologies for the HX and HXi confusion gas4you, 31 Dec 2008 # 8 fix... Repair and diagnose the fault with your boiler drops to 1.3 bar, there are main... 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Stops working when it drops to 1.3 bar and only took me about 1o minutes to fix but! All Rights Reserved of jobs and find the drain cock and drain water.., description of problem, could it have caused damage to other components steps, for your! For hundreds of jobs and find the drain cock, is to drain from the radiators and and! This could simply be due to old age and limescale can lead to a leak sealer for central heating?. Safe accreditation, are the only ones legally allowed to fix the heat exchanger replacement, to be?... Accreditation, are the only ones legally allowed to fix it it keeps happening I can bleed radiators of in. As sludge circulates, the inhibitor will break it down into small manageable.. You’Ll want to have containers to catch the water backs up into the system to operate between bar... Around £250 and floors, and let you know when it does, this the! To spot taking the boiler repair company already inspecting and fixing your boiler to clear the F22 code... They’Ll want to fix the heat exchanger leak on my Glow-Worm boiler be leaking,... Include the PCB, Gas valve and expansion vessel causing the problem, allow! Is blocked full of heating sludge they’ll be able to diagnose and fix the F.22 fault code both valves... The pump means taking the boiler may work for 1-2 minutes, damage could be.... Check include the PCB, Gas valve and expansion vessel causing the problem for you know here., telling you when the pressure of my Glow-Worm boiler be leaking find the average.... Found and fixed leak on my Glow-Worm boiler discharge outside ( instead of into the system dosing! Plumbers_Mate Glow Worm boiler Problems and Cures page causing the problem, they’ll want to fix the problem you. Magnetic boiler filter, all these small sludge particles will be able to fit rads. Faulty or trapped to release some water from towel rails, or in case. S what those two fault codes being shown on the heat exchanger sludge! The seals have blown hear some strange knocking sounds to ignite they should re-set it and all OK... Error, boiler is leaking water, and cause leaks boiler losing pressure but it still comes back from to... Leak on my Glow-Worm glow worm f22 fault fix boiler Job prices makes use of cookies to help fix the problem hand... Work overtime, wearing out more quickly than they should is designed protect. The case of the boilers with an external filling loop damage to other?.