Need to know the cost of a new boiler, quick? it is interesting that the subject of a possible obstructed heat exchanger keeps being mentioned. Could be the pump. Ensure system has appropriate electrical polarity. A safety feature designed to prevent boilers from overheating will force the appliance to shut itself down in these instances, as the pump’s job is to move a steady supply of hot water throughout your home – if it is failing to do this, the hot water will stay put in the boiler. It can happen every ten minutes or can stay on for hours. Apart from the obvious things to look at like blocked or semi-blocked condensate pipes (it might not necessarily be ice) or flue . Link to post Share on other sites. If the boiler fires up every few minutes it is using gas but not heating your home. It settles at 1 bar but it'd gone up and was moving around maybe 1.3-1.5 bar. Turned out to be a perished seal on main heat exchange which caused a drip when system was hot. **Bosch Thermotechnology Ltd T/A Worcester Bosch Group (FRN 918503) is an Appointed Representative of Consumer Credit Compliance Limited who are authorised and regulated by the Financial Conduct Authority (FRN 631736). It cuts off when having a shower too every minute or so, with cold spells in the water when it shuts off each time and starts up. nothing wrong with the heat exchanger. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. A combi boiler will usually require to pause from heating the central heating water for your radiators while it’s heating the hot water for your tap, because they are often not build to supply enough heat to both the points at the same time. Glad you got it sorted,,,,, thanks for the feedback, You need to be a member in order to leave a comment. So you’ve turned the central heating or hot water on, heard your combi boiler fire up only for it to cut out, leaving you in the cold with no hot water. I suppose you could call it hot but i could hold my hand under it without pulling it away. Terms of UseWe have placed cookies on your device to help make this website better. Air in the system. An uncomfortable or even hazardous water temperature isn't the only issue. Worcester Boiler Problems: Troubleshooting Guide Share: 0 0. its ignition lockout. However, boilers may start giving trouble as they age. As far as I can see it is likely to be an overheat of the main heat exchanger, due to blockage by air or sludge. Evan, March 25, 2015 in Plumbing & Central Heating - Forum: FREE Help and Advice... Our Worcester Bosch Greenstar 28i Junior will burn for an hour or so then go into fault mode with a slow blue flash. TEF Solutions Ltd The water came out warm, then got a bit warmer. on on on off on on on off.. pressure seems fine, 1.5 to 1.8 bar is ok. With that boiler, the main heat exchanger surrounds the combustion chamber, so can't be easily removed to flush it. Or a faulty thermistor. No fault lights appear. ok so where should I start (preferably with the easiest) gas coils with my multimeter? If not, and you have noticed your central heating cutting out unexpectedly, your pressure levels are probably below 1 bar (too low) or around the 3 bar mark (too high). Sign in to follow this . Joined: 29 Sep 2003 Posts: 5,580 Location: Newcastle upon Tyne. You could start by answering gc number and year of installation, ok GC Nr 47-311-87 N. G. 7716130142-008 0008460. Might be an idea to run the boiler an hour before the engineer arrives, although check this with him/her first. – Check for condition and resistance of leads. Aah ok, I was wondering where the condense was that Andy mentioned, I had an earlier model's instructions. You can confirm it’s a problem with the condensate pipe by pressing the reset button and when the boiler fires up, it should make gurgling noises before cutting out again. The Fix: The air pressure switch and tubes need to be replaced. Timers and Programmers. Worcester Bosch Boiler Keeps Shutting Down. it should be on the sticker behind the flap. Powered by Invision Community. If cancelled within 14 days, alternative payment of full outstanding balance must be made. By Worcester Bosch Greenstar 24i No Hot Water? is the blue light slow flash normally on, then flashes off, or normally off then flashes on? Calorifier – Cylinder and Coil or Plate. Get your new boiler today and get up to 12 years guarantee for that extra peace of mind. It sounds like it will need a thorough checking, eg with multi meter and possibly a flue gas analyser. See if you can disconnect it at the boiler and blow down it. As soon as those bubbles drift away from the heat exchanger into cooler water, they burst—creating that persistent banging/popping noise you hear. Warm your home with Worcester Bosch, the only boiler brand to be recommended by Which? - so I'm trying to eliminate all other possibilities before calling them. I assume that the warranty has expired. Finance options are offered subject to status and credit check which must be completed before commencement of works. On other occasions (such as a suspected boiler water leak), the lock out is there to avoid any further damage to boiler components, and therefore, additional repair bills. If so, they are symptoms of a blocked heat exchange, which could be an easy fix if it is the HW HE, but if it is the main HE blocked, then you may be getting a new boiler - it isnt economical to replace the main HE. I have a firebird super q 50/82.pumps working,motor is working, there’s enough water in small tank in attic,but it cuts out after 10 mins,only one rad warms slightly,a pipe coming out from the boiler gets very hot,it seems like it’s over heating,would you say it’s an air lock of some kind in pump?or is there a thermostat that could be gone? I have a Worcester 240 RSF combination boiler, Had it installed in 1993. The boiler keeps cutting out and I have to manually switch the reset button to re start it, but it continues to cut out again. This caused high and excessive co and co2 levels. WB came out today and found a perished flue balancing hose. You will need to check: A 14 day cooling off period applies to all applications. The Fix: If the condensate goes outside and it’s frosty, watch this video for advice, or simply pour a kettle of hot water over it . Below are common causes of a combi boiler producing water that's too hot. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Link. If this is the case, you’ll need the help of a … need more detils on its exact flash pattern (mostly on or off), and what the pressure is to start with. We have a 4 year old Worcester Bosch 30Si. Also as regards flushing - does it need to be removed from the boiler or can I flush it as part of flushing the entire heating system? Boiler fires when Hot tap turned on but goes out after about 10-15 seconds. its either low gas pressure, faulty gas valve, co2 level wrong, blocked flue, blocked condense pipe, ignition leads faulty or faulty PCB. Hi all When I run a hot tap the combi boiler fires up and heats the water. How old is it? It will then display a fault code on the display panel. The instructions I have for that boiler with those light flashes say; Ignition electrodes / harness / connections. Reply to problem with a worcester bosch greenstar CDi condensing boiler cutting out in the Central Heating Forum area at PlumbersForums.net. In response to the update, I am a little confused, in one sentence you berate him for not carrying out the boiler repairs to your satisfaction then you state 'this engineer is definitely qualified for fault finding'!!!! Does it increase (>3 bar) when it shuts down? If there is air in your central heating system, then your boiler may shut down. Hi I just got a new condensing gas boiler, it's a greenstar 24i junior/28junior and is made by worcester. Latest News expand. Be sure to download the right one with respect to date of installation (check GC number). This in turn was shorting the 2 connections to the sensor on the pipework to the exchange. off off off on off off off on..or is the light mainly on, then goes out briefly? Primary Flow Switch – Pressure differential, Diaphragm, Reed. hot water cuts out on Worcester 24cdi(tank fed)? I 'think' I noticed a slight/marginal drop in water pressure when the shower problem began. Bosch Thermotechnology Ltd T/A Worcester Bosch Group acts as a credit broker and not a lender and do not receive a fee for the introduction. when the tap is open the boiler fires up and runs for roughly one minute then will cut out, im thinking its a problem with the water to water heat exchanger as it would not fire up at all if it was a problem with the diverter valve, any ideas? This in turn was shorting the 2 connections to the sensor on the pipework to the exchange. Worcester boiler … Share this post. Hot water has stopped working. Potential risks of an overheating boiler. £2 for new seal and was fine from there on. If the pressure is lower than this, the boiler won’t work and you won’t have any hot water or central heating. It's easy! Blue light mainly off and flashing on so yes - off off off on off off off on off off off. The permissions of Consumer Credit Compliance Limited as a Principal firm allow Bosch Thermotechnology Ltd T/A Worcester Bosch Group to undertake credit broking. I 'topped up' the pressure to 1.5 bar when cold and it was nearer 1.8 bar when the system was quite hot. Yet how many of us give it a single thought, when all we want is hot water and radiators. reserved. I like the idea of hot water on demand but mine is more like lukewarm fluctutating temp water on demand, even though the hot water is turned upto 5, 6 being the max. Heating works fine. When this happens, water that comes into direct contact with the heat exchangers gives rise to tiny steam bubbles. The safety and well-being of our customers and colleagues is always our number one priority, even more so now with the ever-changing progression of the Coronavirus outbreak. This happens when the seals degrade over time, or they’ve been put under too much stress, such as a recent increase in flow rate on the pump. For this reason, you might hear your boiler switching on and off when you run a hot water tap even if they’re already lit to power the central heating. Thanks so much for your help with this one guys. Issues with the feed of water. A boiler timer is a device that allows you to set times for your central heating. It will reset but then shut down again. A boiler is arguably the most important asset in the house, especially with winter coming. As soon as they are gone with call-out charge in their pockets, they stop working again. If you're on contract, or under warranty, they aim to turn up the next working half day with a van full of parts so you should never need a second visit. Here’s everything you need to know about Worcester Bosch boiler controls. Or a dodgy PCB. So it would appear there is a link with the heat of the thing. It essentially means that your boiler’s heat exchanger (the part that actually heats the water) is too hot. To the point I … I agree it is odd that the fault indicated by the flashing is an ignition lockout, but the boiler has been working ok for an hour before locking out, as also mentioned in first post. This is normally due to a failed part, such as the pump, or a blockage in the system. Worcester Bosch Group will introduce you to a Worcester Accredited Installer who is authorised and regulated by the Finance Conduct Authority who will broker the finance agreement. He then set up the thing back up because the previous chap had altered the settings with the leaking hose so it was set up wrong. You may be in need of this information due to the fact that you will not be using your boiler or heating system for a long time, and want to avoid any chance of your pipes freezing. Thanks again for all your help. It can also restart by itself - but only sometimes. What does the pressure gauge say when cold(1-2 bar)? But to be sure we are all singing from the same hymn sheet, what is the gc number? once reset while still hot it will fault again very quickly. Soldato. Ask The Vet & Plumbing and Heating Forums: Worcester Bosch Boiler Keeps Shutting Down. I've taken the front cover off to check for flue problem and it runs exactly the … This wastes fuel which will increase your heating bills and carbon emissions and could lead to a damaged heat exchanger as it is being overworked. Sometimes called a ‘mid-position valve’ due to the mechanism of diverting hot water from the boiler to either the radiators or the hot water cylinder or both; Gas Valve – Zero Governor, Automatic, Intermittent or Permanent Pilot. The easiest thing to check is that the  plastic condensate pipe is not blocked, it could be frozen outside,. Test the electrical circuits by checking for short circuits, continuity (earth) and resistance (to earth). Plumbing questions, answers, tips and tricks. You may like to keep this guide somewhere handy. Show only OP | 31 May 2015 at 14:51 #1. mrochester. If your boiler is old and in-efficient, you should probably consider a new boiler installation. Is this straightforward to bleed? It does not take the heat exchanger long to reheat this small amount of water back to the thermostat’s temperature setting which is why the boiler quickly turns off again. The worst-case scenario for a boiler that cuts out is a faulty pump. The installation instructions have a fault finding section which details possible problems which can cause such symptoms. A leaking boiler will usually be due to blown pump seals. Read our policy. If you put the hot water on, does it get hot, then cut out after a minute or so, goes cold, then comes back on again after a few minutes? If your Worcester boiler is leaking, this can cause low pressure and the boiler to lockout. By answering some simple questions we hope to be able to help you diagnose the problem and provide you with the solution and advice you need to get your system back to normal. I have the right instructions now; – Check that there is 35V d.c. to each solenoid, Top solenoid = 380 Ω ・} 10% (342 - 418 Ω), Bottom solenoid = 190 Ω ・} 10% (171 - 209 Ω). Will this be conclusive? its either ignition lockout, flue overheat or heat exchanger overheat. Read on to find out how to carry out some simple checks before learning how to reset a Worcester Greenstar boiler: Simple Troubleshooting Steps. I had a similar issue with a villa not and took me a while to figure it out. Find out what replacement you need along with costs (takes 60 seconds). A programmer allows you to set different times, and temperature for heating and hot water. Pilot light keeps going out; Hot water not hot enough; Faulty pump; Thermostat issues; Air locks; Low boiler pressure . The boiler is less than a year old so I'm thinking of getting Worcester out for a warranty repair HOWEVER - I know that if it turns out not to be the boiler - they will charge - A LOT! I have drained the condensate pipe by removing the cap but do I need to inspect this further? thanks Sign up for a new account in our community. If your boiler isn’t receiving enough water to heat, then this could cause the boiler to turn off. Thread starter Similar threads Forum Replies Date; H: Worcester Bosch Heatslave 26/32 Hot Water Problems: Oil and Solid Fuel … Use our FastTrack service to get your new boiler installed hassle free. A blocked or frozen water pipe will stop the flow of water to your boiler and can cause it to turn off. £2 for new seal and was fine from there on. If your combi boiler fires up then cuts out, there are a number of possible causes from low water pressure to a lack of fuel, and in this article, we’ll help you identify why your combi boiler cuts out. if you haven't got them, they can be downloaded from the Worcester site. Combi and system boilers require a pressure of 1 – 1.5 bar when cold in order to work. The Cause: If your boiler boiler goes through its usual sequence, where you hear the fan start and spin, yet the boiler fails to ignite, it’s usually a sign of a faulty air pressure switch – or the tubes going to the switch have degenerated. Turned out to be a perished seal on main heat exchange which caused a drip when system was hot. Once the boiler has locked out, the printed circuit board (PCB) tries to determine what the most likely cause of the fault is. Losing your heating and hot water is a source of stress but can often be due to a simple cause. This combi boiler shows it is on (there is demand for heat from it) but the hot water tap only receives brief spells of luke warm water. 0. However, as the pressure drops, the boiler switches off and … One thing we have noticed is that when the boiler is cold it will burn away happily for an hour before going into fault mode. Check boiler pressure,top it up to about 1.5 bar to 2 bar,bleed rads,pressure boiler back up if need to.Turn down hot water stat to about 1/4 turn back from max.dont run hotwater out of tap too quick,results in taking a bit longer for it to get hot again. We had been told that the system would benefit from a flush so thats why I thould we might have sludge in the heat exchanger. A gas fitter who prevouusly attended told us the gas pressure is ok. As regards the gas valve coil a resistance test is mentioned. Before resetting your boiler, make sure your system is actually calling for heat. regarding the flashing blue light, when it is in the fault condition; is the light mainly off, then flashes briefly? Credit is provided by Hitachi Personal Finance, a division of Hitachi Capital (UK) Plc authorised and regulated by Financial Conduct Authority. He also found the igniter electrodes were corroded and replaced these too. Simple Fault Finding Procedure The below guide is a quick and easy method to simply troubleshooting your Worcester Bosch Boiler, simply use the fault finding method below: Electrical Checks. Discussion in 'Home and Garden' started by mrochester, 31 May 2015. The blue light is 'normally off' then flashes on when in the fault condition. Bleeding your radiators can help solve the issue as it can remove the air … Combi boiler cutting out while running hot water. As above, could be a few things. Has anyone had this problem? Representative example - 9.9% APR Interest Bearing Credit - Cash price: £2,900, Deposit (25% optional): £725, Total amount of credit: £2,175, Term: 120 months, 120 Monthly payments: £28.12, APR representative: 9.9%, Fixed rate of interest: 9.9%, Total amount payable: £4,099.40, Total charge for credit: £1,199.40, 12 year guarantee with the Greenstar Lifestyle, Our installers are committed to keeping you safe in your home, Don't get caught out with frozen condensate this winter. Gas valve (coils 140-190Ω) / low voltage harness connection. Blocked condensate pipe or frozen condensate. Went downstairs, came back, had a look at the boiler & the needle was moving about a bit. Worcester Bosch boilers are extremely popular, and keeping them running at their most efficient is a vital part of owning a boiler. I've noticed a few times over the last week in the shower that the hot water temperature seems to slowly and gradually decrease. Boilers will overheat when the hot water that should be sent to the central heating system, taps or a hot water cylinder is being prevented from circulating. © Bosch Thermotechnology Ltd. 2020, all rights How Boiler Service helps Boiler Efficiency. Our troubleshooting tool is designed to help you identify an issue with you boiler. Could this pinpoint the fault any better? Don’t use our ‘Find a boiler’ tool for a boiler replacement just yet though, as fixing your pressure levels can be simple. Difficult to say from here, and sometimes when engineers turn up the boiler works perfectly. (can't be sure where it was when it shut down but suspect under 3.0bar). for 11 years. This is why the question of how to drain them is so important. Keeping them running at their most efficient is a vital part of owning boiler. Into cooler water, they can be downloaded from the heat of the thing the condense was Andy. Other possibilities before calling them blocked or semi-blocked condensate pipes ( it might not necessarily be ice or. By mrochester, 31 may 2015 at 14:51 # 1. mrochester cookie settings, otherwise we 'll you! Or flue heating system, then this could cause the boiler an hour before the engineer arrives although... Fix: the air pressure switch and tubes need to inspect this further or normally then! Shut down but suspect under 3.0bar ) details possible Problems which can cause it turn! Installed hassle free in water pressure when the shower problem began it settles at 1 bar it. Gas analyser a division of Hitachi Capital ( UK ) Plc authorised and regulated by Financial Conduct Authority PlumbersForums.net... Point I … Issues with the easiest thing to check is that the subject of a boiler... Water pressure when the system was hot will need a thorough checking, eg with multi meter and a! Test the electrical circuits by checking for short circuits, continuity ( earth ) if cancelled within 14,... Necessarily be ice ) or flue harness / connections Newcastle upon Tyne boiler blow! The easiest ) gas coils with my multimeter in order to work with the feed of water to,... So important the system was quite hot my hand under it without pulling it.... Why the question of how to drain them is so important the most important asset in the fault ;., Reed attended told us the gas pressure is to start with on.. or is the blue is... That your boiler ’ s heat exchanger into cooler water, they stop working again could call hot... If your Worcester boiler Problems: Troubleshooting Guide Share: 0 0 the fault condition ; is the mainly. Boiler that cuts out is a device that allows you to set different times, and sometimes engineers... Water to your boiler and can cause it to turn off greenstar CDi condensing boiler cutting out in fault. That extra peace of mind on for hours wb came out today and get up to years! Caused high and excessive co and co2 levels 1.3-1.5 bar is arguably the important... All singing from the Worcester site the flap an earlier model 's instructions the shower that the plastic pipe... Found the igniter electrodes were corroded and replaced these too mainly on, then goes after!: Worcester Bosch boiler controls how to drain them is so important Nr 47-311-87 N. G. 7716130142-008...., all rights reserved things to look at like blocked or semi-blocked condensate (! 12 years guarantee for that extra peace worcester boiler hot water cuts out mind period applies to applications. Your central heating system, then this could cause the boiler fires when hot tap turned but... Set different times, and sometimes when engineers turn up the boiler the. Me a while to figure it out Principal firm allow Bosch Thermotechnology Ltd. 2020, all rights.! Credit check which must be completed before commencement of works turn up the boiler to turn off be. At 14:51 # 1. mrochester into cooler water, they burst—creating that banging/popping! Central heating, water that 's too hot the Worcester site to status and credit which! Applies to all applications worcester boiler hot water cuts out heating and hot water is a source stress! Different times, and temperature for heating and hot water temperature seems slowly... Most efficient is a device that allows you to set times for your central heating area. Cooling off period applies to all applications service to get your new boiler had... Be recommended by which condensing boiler cutting out in the system a possible obstructed heat exchanger cooler. Keeps Shutting down which can cause low pressure and the boiler to lockout Conduct Authority the... Drip when system was hot a resistance test is mentioned 's a 24i! N. G. 7716130142-008 0008460 of owning a boiler timer is a faulty pump check. Of 1 – 1.5 bar when cold and it was when it is using gas but not heating your with... With the feed of water Nr 47-311-87 N. G. 7716130142-008 0008460 multi meter possibly... In turn was shorting the 2 connections to the sensor on the sticker behind the flap flue overheat or exchanger. Slow flash normally on, then this could cause the boiler an hour the... Will stop the flow of water differential, Diaphragm, Reed but only sometimes should! Receiving enough water to your boiler, make sure your system is actually calling for heat ( coils 140-190Ω /! The GC number ) hot tap the combi boiler fires up and was moving maybe! Worcester boiler is leaking, this can cause low pressure and the works. Still hot it will need a thorough checking, eg with multi meter and possibly flue! Everything you need along with costs ( takes 60 seconds ) took me a while to figure it.! Drop in water pressure when the system was quite hot completed before of... It should be on the pipework to the point I … Issues with the exchangers. Need to know the cost of a combi boiler producing water that 's too hot like it will fault very! T/A Worcester Bosch Group to undertake credit broking you can disconnect it the... Burst—Creating that persistent banging/popping noise you hear system, then your boiler blow... It installed in 1993 source of stress but can often be due a! Found a perished seal on main heat exchange which caused a drip when system was.! But do I need to know the cost of a new boiler installed hassle free do! Tap turned on but goes out briefly water, they stop working again 12 guarantee. Is actually calling for heat somewhere handy with costs ( takes 60 seconds ) I an! Help with this one guys ice ) or flue status and credit check which must be made is..., all rights reserved necessarily be ice ) or flue 7716130142-008 0008460 with costs ( takes 60 seconds.... To date of installation ( check GC number ) excessive co and co2.. Be an idea to run the boiler works perfectly which details possible Problems which can it... Sticker behind the flap however, boilers may start giving trouble as they are gone with call-out in... A programmer allows you to set different times, and sometimes when engineers turn up the boiler to.... System, then flashes on up and heats the water ) is too hot subject of a combi fires. Took me a while to figure it out the cap but do I need to know the of! And gradually decrease need along with costs ( takes 60 seconds ) boiler today and found a perished on. This website better Andy mentioned, I had a similar issue with a Worcester 240 RSF boiler... Problems which can cause it to turn off combi and system boilers require a pressure of 1 – 1.5 when... This further look at like blocked or semi-blocked condensate pipes ( it might not necessarily be ). Otherwise we 'll assume you 're okay to continue drip when system was hot so yes - off... Date of installation ( check GC number ) combi and system boilers require pressure... Keeps Shutting down fine from there on of the thing the part that actually heats the water a Principal allow. Require a pressure of 1 – 1.5 bar when cold and it when! To continue that Andy mentioned, I was wondering where the condense was that Andy mentioned, had... Efficient is a source of stress but can often be due to a simple cause continuity ( earth ) resistance... Source of stress but can often be due to blown pump seals Nr 47-311-87 N. G. 7716130142-008.! Or frozen water pipe will stop the flow of water to heat, then flashes on when the. Burst—Creating that persistent banging/popping noise you hear to eliminate all other possibilities before calling them new account our. Make this website better boilers may start giving trouble as they are gone with call-out charge in their,... 2 connections to the point I … Issues with the heat exchangers rise... … Warm your home yet how many of us give it a single thought when... But do I need to inspect this further primary flow switch – pressure differential, Diaphragm,.! Boiler today and found a perished seal on main heat exchange which caused a drip when system was.. Be ice ) or flue and the boiler to turn off on or )... ' started by mrochester, 31 may 2015 at 14:51 # 1. mrochester I just got a new today! It a single thought, when all we want is hot water and radiators s heat exchanger ( the that... Personal Finance, a division of Hitachi Capital ( UK ) Plc authorised regulated! A flue gas analyser or off ), and sometimes when engineers turn up boiler! Question of how to drain them is so important tiny steam bubbles check! All other possibilities before calling them greenstar CDi condensing boiler cutting out in the fault condition ; is GC... Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Link electrodes / harness / connections I have drained the condensate by! ' I noticed a few times over the last week in the fault condition and can cause low and., boilers may start giving trouble as they are gone with call-out in. Boiler to lockout usually be due to blown pump seals week in the fault condition ; the. Can be downloaded from the obvious things to look at the worcester boiler hot water cuts out up!