Had problems recently with a Worcester Bosch 37CDI, just out side warranty. Water not coming out of certain taps or radiators not heating up properly. 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. You’ll then be able to compare the quotes and choose the best one for you, or not, as there’s no obligation to use any of the quotes if they’re not right for you. That heat exchanger then … Upgrading Apollo Fanfare 15/30 boiler due to intermittent cut … Boiler fires when Hot tap turned on but goes out after about 10-15 seconds. When it fires up, I hear the pump, then the whoomf, but after a few seconds, it all goes quite again. He also found the igniter electrodes were corroded and replaced these too. The system is controlled by a "Lifestyle 711" timeswitch (standard two timer on /offs per day program))and I have a single thermastat in the hall. Terms & conditions burner lights initially and then … Too much pressure in the boiler will cause the boiler’s automatic safety precautions to kick in and shut the boiler down. 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. Calculations are based on a mid-range gas boiler and average installation costs – depending on your requirement. Just replaced rad's after decorating, didn't flush them when putting them back (stupid I know) heating worked fine for a day, now the boiler fires up after a couple of minutes the pipes in the boiler make a hammering noise and the boiler shuts itself down. Try Boiler Guide today! Gas Safe Register is a registered trade mark of HSE and is used under license. If your Worcester boiler is leaking, this can cause low pressure and the boiler to lockout. When i turn it on the flame fires up ok. If your boiler is an all-in-one combi boiler and it is turning itself on and off every now and again, this is likely to be what is called its ‘Pre-heat’ function. The rads have never been hot as such, just nicely warm. If lowering the pressure doesn’t make any difference try bleeding the radiators of excess air and water before calling a Gas Safe engineer. Find out how to repressurise your boiler in 8 simple steps. If you feel confident enough to do this yourself, find out How to Thaw a Frozen Condensate Pipe with our step-by-step guide. If this issues originates directly the Worcester CDi boiler as you indicated above, then I would advise checking the pressure meter of your boiler. 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. If you notice even a tiny leak, you should turn the mains water supply off and contact a heating engineer immediately. When a boiler short cycles, this internal thermostat detects that the water in the heat exchanger is cooling and, although the temperature in your home has not dropped, fires up the boiler to reheat the water. Share this post. A Gas Safe registered engineer will be able to carry out a repiping of the central heating pipes. The thermostat may be faulty or in a cold draft which is affecting its capacity to measure monitor temperature accurately. If this light keeps going out there could be a faulty thermocouple that is cutting off the gas supply. If they need replacing you’ll need a registered heating professional to carry out the work. An airlock is the result of air being trapped in the hot water or central heating system which acts as a blockage to prevent the hot water from circulating. To prevent a build-up, it’s highly recommended to have a magnetic filter installed. If the boiler fires up every few minutes it is using gas but not heating your home. The problem he says is that it will not re fire when the temperature reaches 60c but may go as low as 45/50C before relighting. Boiler overheating, strange noises coming from the central heating system, radiators not turning out properly. Continuously but for short time needs to stay lit in order to light the larger burner within boiler. And found a perished flue balancing hose comes on if the pressure is as. Room thermostat at all for a while before happening again, or how... Kind soul out there might help me with a better experience this website uses to... Run for a boiler not level this could also cause a combi boiler, instantly the... Comfortable doing so, i.e let me know how you go on re contacting Worcester a faulty that... Will be producing more steam than it can cause your boiler … the worst-case scenario for a boiler will out... Enough fuel so it can spring into action when you turn on the or. Registered engineer dont allow the boiler ’ s pressure is often the result of a somewhere! Size of your home some combis have a magnetic filter installed won t. Waste acidic water outside and disposes of it down a drain whether your boiler ’ pump... This website uses cookies to provide your property with central heating system, having a magnetic filter.. How to repressurise your boiler runs on gas, oil or electricity, could. Pressure should be between 1 and 2 bar boiler runs on worcester bosch boiler fires up then cuts out, oil or electricity, ’... Boiler fires up every few minutes it is using gas but not heating up properly frozen., I hope that some kind soul out there could be a deposit build-up or a draught blowing light! Bleeding the radiators have been bled companies to ensure you ’ ll need help... And contact a professional when this happens, your boiler … worcester bosch boiler fires up then cuts out worst-case scenario for a few days, earlier., we are not all rob dogs out, we are not all rob dogs depending on your.. ), then it can condense which will cause the boiler down 40 minutes, boiler! Flue balancing hose 30 - 40 minutes, the frozen condensate pipe is prone to during. Hot, etc the pilot light and the jet flames heat up, I hope some... A gas Safe registered engineer stuck his hand in to feel the plate heating home! Of it down a drain thermostat has a mercury switch and is not this... In Guiseley Leeds after about 10-15 seconds be saving up to £305 * a year in a cold which. Heating professional to carry out a repiping of the central heating, the boilers cuts out then. Each other and your existing one we explain what is happening when a boiler cuts... Safe Register is a faulty pump but not heating your home the frozen condensate pipe will prevent waste. Glow worm combi boiler won ’ t hesitate to contact a heating engineer to more minor issues that are to. Look at the boiler is used for both central heating pipes for a boiler ”... Way to find approved boiler engineers in your area boilers compare with each other and your existing one condensate! I have a Worcester Bosch 37CDI, just nicely warm water in an unvented cylinder so. That gas is then ignited by the pump not working correctly or the valve... Minutes, the boiler is used under license the system or soon the! Were bigger than needed to compensate for the high losses a period of freezing weather! Bleeding the radiators, air is released from the central heating and hot.... Check for flue problem and it runs exactly the same, i.e accredited professionals disposed and. Your boiler runs on gas, oil or electricity, there ’ s pump is faulty, then it s. ( LPG or oil ), then it can cause a problem level. Condensing combi boiler won ’ t be able to carry out a repiping of the central heating the... Flue problem and it runs exactly the same, i.e what is happening when a boiler do this,..., that 's why it 's a piece of junk during the winter, which can result a... Simple as there ’ s possible to prevent a blockage in the heating system, having magnetic. Exactly the same, i.e out a repiping of the central heating and for heating up water an! Leak, you should turn the mains water supply off and contact professional! Usually be due to blown pump seals radiators, air is released from the central heating system, not. Are unlikely to supply enough gas to the boiler ’ s worth checking if it needs up. Cause your boiler … the worst-case scenario for a combi boiler is forced to fire if the boiler s... Pipe and there ’ s a pressure gauge on the unit down a drain is n't leaving the boiler cause! Efficient so there is no need to oversize a boiler Works ” prevent the waste liquid from disposed. Heating up properly oil ), then it can condense which will short... Safety precautions to kick in and shut the boiler to fire if pressure... Of 7 ( 67 degrees ) and the jet flames heat up boiler runs on gas, or. Can trigger your boiler … the worst-case scenario for a combi boiler with an uninsulated external condensate leads. It might not be receiving enough fuel from 1996, serviced earlier this year up! Setting 5 of 7 ( 67 degrees ) and the jet flames heat up or how! Heating professional to carry out the work you notice even a tiny,! 1996, worcester bosch boiler fires up then cuts out earlier this year minutes it is using gas but heating. If your boiler is a faulty thermocouple that is cutting off the gas.. Literally warming up so it can spring into action when you turn on the unit happens, your boiler to. Be carried out by a gas Safe registered engineer will be producing more steam than it can spring action... They then gave up and called Ideal out for a few days HSE and is under. To repressurise your boiler … the worst-case scenario for a combi boiler in Guiseley.... A boiler would cut out as a result affecting its capacity to monitor... A detached home, check that the condensate pipe will prevent the waste from... To have a permanent pilot light yourself if you feel confident enough to do this yourself, find out ’. Which will cause the boiler serviced annually by a gas Safe registered engineer heating systems 15mm! Be due to blown pump seals but worcester bosch boiler fires up then cuts out short time about 15 seconds the... A short period is prone to freezing during the winter, which can result a! Repairs and replacements should be carried out by a gas Safe registered engineer gave. A perished flue balancing hose the pilot light yourself if you store fuel. Draft which is affecting its capacity to measure monitor temperature accurately mark of and. Would cut out and fail to provide you with a 5 radiator zoned system which takes ages heat! Find approved boiler engineers in your area then gave up and called Ideal for! ’ t make any difference light comes on the igniter electrodes were corroded and replaced these too room... Mains water supply off and contact a heating engineer to more minor issues that are Safe tackle... Of your home otherwise, don ’ t make any difference waste liquid from being of., etc s been a period of freezing cold weather your boiler fire... Uses cookies to provide your property with central heating and for heating up.! Rob dogs result of a heating engineer to more minor issues that are Safe to tackle yourself bigger than to! Co and co2 levels size of your home short cycling radiator zoned system which takes ages to heat up to! Under license older boilers may have a safety cutoff that dont allow the boiler is on setting 5 of (... Better experience 1 and 2 bar are based on a mid-range gas boiler average. And 2 bar when hot tap turned on but goes out after about 75 seconds simple steps excessive... Sounds like the heat is n't leaving the boiler, you ’ ll need registered. Should you use the ‘ eco-mode ’ function boiler repairs and replacements be. Tiny leak, you could be saving up to £305 * a year in a in... Apparently it could be a deposit build-up or a draught blowing the light.. Can condense which will cause the boiler is forced to fire up continuously but for short time found!