You may wish to look at the following options if you feel confident to do so. Also make sure there is a water supply - if no water comes from the taps, there may be a temporary supply interruption. Depending on the type of boiler you have, the first sign that your boiler is not working will often be a change from the usual display colour along with an error code. Surely this could affect the vent? Last Monday for example and last Thursday when it was really wild outside, it kept shutting down as soon as the radiators had nearly heated up, then it flashes and eventually starts up again then does the whole thing again 5 mins later. Hot water goes cold(usually when in the shower!) It may be easier to get somebody you trust to help you. Discuss Worcester 28CDi Intermittent Fault. For a better experience, please enable JavaScript in your browser before proceeding. Take care to observe the gauge at all times to avoid over-pressurising the boiler. Combi boiler intermittent hot water in shower. This is a special part of the system which allows your combi-boiler to switch between hot water and heating. Something is restricting the amount of hot water and the constancy of hot water leaving the boiler. Expert: Andrew Smith replied 3 years ago. Test the electrical circuits by checking for short circuits, continuity (earth) and resistance (to earth). Hi, I have a problem with my boiler. The following steps should be followed: If you continue to experience problems with your boiler losing pressure, find out more about possible causes and solutions in our advice concerning the topic boiler loses pressure. Last Monday for example and last Thursday when it was really wild outside, it kept shutting down as soon as the radiators had nearly heated up, then it flashes and eventually starts up again then does the whole thing again 5 mins later. I am desperate now, its been going on for ages (although not had any problems through the summer?). A leak in either your heating or hot water system can cause a fall in pressure and result in a lack of hot water. If your pressure is below the normal operating range, follow this guide to re-pressurise. If there is no display on your boiler, this may indicate that the problem is with your power supply - checking to see if you have electricity to your lights and sockets will quickly confirm this. This guide will help you to identify and solve common causes for hot water problems. Low boiler pressure. Touch the plate heat exchanger at the back of the boiler. Take care not to mistake condensation for a leak. rain water coming into Ideal Combi boiler through flue and causing main circuit board to blow. Find the location of your filling-loop and pressure gauge. If you are confident that your hot water problem is not caused by one of the above problems then it may be advisable to seek help from a trained Gas Safe engineer. However, since the wind has died down its worked fine and the rads are so hot you can't touch them and it doesn't switch off once!!!! Primary Flow Switch – Pressure differential, Diaphragm, Reed. How to patch a hole in a toilet waste pipe. You can usually identify if your boiler’s pressure is too low by taking a look at … It may not display this or other websites correctly. Boiler problem 1: no hot water. In order to function correctly, your boiler needs a particular balance of water and air to ensure the pressure in the system is adequate for when water is demanded from the boiler – essentially when you switch on your heating or hot water. Is a broken boiler covered by home insurance? If you hear a boiler noise while having intermittent hot water it is like scale as well. It seems to be worse when the weather is bad. The fast flashing Hot water light shows as an air flow problem in the manual, thanks in advance for any help!!!!! A boiler’s diverter valve has the same function as the one on a showerhead – it controls the flow of hot water to different destinations. If you have eliminated any fault in the system and you have a recurring problem with your hot water supply, the problem may be that the boiler simply isn’t big enough and is struggling to provide enough heat and hot water for your house. I've been having an issue with my hot water for a couple of weeks now- it comes out hot for about 2-3 mins and then goes cold for 2-3 mins, then goes hot for 2-3 mins, and so on. Also when its playing up it tends to wait until I am in the shower with my hair wet, then it goes freezing cold, when you go down to check the boiler the light is flashing again and you have to press the red button or wait for it to restart itself. You are using an out of date browser. Hot water fluctuates between hot and cold or hot water is unstable. The first thing you should check if you have no hot water is whether or not your boiler is working. We live on the hills as well so when I say windy I mean the house was shaking! Some fault codes can be easily rectified yourself with a simple boiler reset, whilst others may need professional attention. 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. Get your new boiler today and get up to 12 years guarantee for that extra peace of mind. The water pressure for a standard domestic boiler is usually around 1.5 bar and will be displayed on a gauge known as a ‘Manometer’, usually located where the water supply pipes are connected to the boiler. If there are no instructions for this or if you have any doubts, be sure to seek the advice of a qualified engineer. It seems to be worse when the weather is bad. In cold weather, combi boilers can experience ‘low flow rates’, which may lead you to think your combi boiler has no hot water. Heating/Hot Water Issue - Unknown problem! Test a hot water tap as well. System and conventional boilers don’t require a diverter valve, since they store the hot water in a cylinder. Slowly turn both of the filling loop handles until they match the direction of the pipe - as you do this, you should be able to hear water flowing. The water pressure for a standard domestic boiler is usually around 1.5 bar and will be displayed on a gauge known as a ‘Manometer’, usually located where the water supply pipes are connected to the boiler. Have bypassed external thermostatic controller however has made no difference. One sign of this is if you need to turn the central heating to maximum in order to get any hot water. You may also want to check your main fuse box. Gas Safe Register | Ensure your gas engineer is registered. Your timer may have been affected by the clocks changing, power supply, back-up batteries failing or even somebody altering the settings without you knowing. Looking for a Heating Engineer? You simply have to run the hot tap at a slower rate than you normally would. Share this conversation. I have a 3 year old combi boiler - Ideal i-mini 30 which works ok for heating and hot water. When I turn a hot tap on the boiler fires up and hot water is initially produced but within 10 to 20 seconds the water goes cold again. This may have been affected by the clocks changing, power supply, back-up batteries failing or even somebody altering the settings without you knowing. When does a new boiler need its first service? Use our FastTrack service to get your new boiler installed hassle free. I have a Worcester Bosch Greenstar 30CDI combi boiler - 3 years old and obviously out of warranty :( Although the heating works fine, I have an intermittent fault where I lose hot water. Before beginning, make sure you can see the pressure gauge at all times whilst accessing the filling loop. Boiler is leaking (A281 or EA338) The longer a leaking boiler is left before being repaired, the higher the chance of damage being caused to other components, especially electrical parts. Liberty Hot Water Oil-Fired Boiler with 131,000 to 175,000 BTU Input 117,000 to 131,000 BTU Output Tankless Coil Equip your home with 117,000 BTU to 131,000 Equip your home with 117,000 BTU to 131,000 BTUs of heating power per hour using this 3.2 Gal. I had a similar problem once on an old Worcester and it was the rectification probe, it had just slipped down and was touching the burner. Water and heating - not heating only. in the Gas Engineers Forum area at PlumbersForums.net, Welcome to PlumbersForums.net - The international free. No fault code. Nightmare!!! Look for patches on ceilings, peeling or flaking paint on or around pipes, swollen woodwork and mould patches. The electricity supply. The operating pressure for most systems is around 1.5 bar, however it is recommended that you consult the manual for your boiler to confirm. When lime … Is your hot water cycling hot and cold? The cottage walls are very thick. From experience, I’ve found that as combi boilers get older, their parts get worn down which can end up causing this problem. Important: Be sure to consult the operating manual first to ensure that you are able to re-pressurise the boiler yourself. Does a new boiler need a gas safe certificate? If that's intermittent then obviously it's the supply from the boiler that's the issue. Post Jobs Here, Coronavirus SARS-Cov-2 virus and COVID-19 disease, Worcester 28CDi Intermittent Fault. To find out what the error code means, consult your boiler manual or have a look on our Fault code page for Viessmann boilers. Oil Boiler that is ideal for heating large spaces up to 3,000 sq. An expert will be able to advise you of the optimum boiler size for your home based on your current and future needs. The boiler is a Worcester-Bosch Greenstar 25si, if that's of any use. Worcester Greenstar 30CDI Combi - intermittent hot water. However, there are two sides of coin to think about: for 11 years. Once you have restored the correct pressure, ensure the handles are fully closed. 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. How to make an old home more energy efficient. However, regardless of not having to share incoming it could be a flow fluctuation issue. This was on a Worcester … I have an engineer coming tomorrow but he said its just coincidence with the wind and it sounds like the circuit board needs replacing. 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. JavaScript is disabled. Hi, I have a problem with my boiler. If you have followed the previous steps and still the hot water does not work but your central heating is fine, then it is worth checking the diverter valve. in the Gas Engineers Forum area at PlumbersForums.net, Reply to Worcester 28CDi Intermittent Fault. Our troubleshooting tool is designed to help you identify an issue with you boiler. Water problem has been the same with central heating on or off. If your home runs on a combi-boiler, then low pressure may be the reason for your lack of hot water. Engineer changed the PCB , Fan & 3 sensors. Leaks often occur at joints in pipework which are usually visible, so these are a good place to start. http://www.ukplumbersforums.co.uk/central-heating-forum/42241-notice-gas-safety-related-advice.html. If you are expecting warm water from your taps only to suddenly discover that there is no hot water, it can be both unpleasant and inconvenient. If your boiler timer controls your hot water, this may be the cause of the problem. Boiler is kettling. Warm your home with Worcester Bosch, the only boiler brand to be recommended by Which? A bit irritating when you're in the shower, as you might imagine. If only a single component is corroded, then a Gas Safe Engineer may be able to replace it relatively cheaply, but extensive corrosion may indicate it’s time for a new boiler. The best way to avoid a nasty surprise with your hot water supply is to ensure your heating and hot water system is regularly maintained by a qualified professional to help keep everything running safely and smoothly all year round. How difficult is it to install a heat pump? A couple of days ago I was running a bath and the water ran cold - if I turned the tap off then on again I would get hot water for a few seconds then it would go cold. The correct pressure level will often be indicated on the gauge for modern systems with a green area. The first thing you could check is that your boiler is receiving the power it … The heating is working perfectly but I am have no hot water. Leaks can also cause other problems associated with damp which may lead to significant damage. Remove the cover of the boiler and run hot water tap. Combi Boiler Intermittent Grinding/ Vibrating Noise. Do you want to learn what might be causing it and how to fix it? Whilst this may seem obvious, it is easy to overlook in the heat of the moment. Combi boiler issue - heating and hot water. A problem with the diverter valve will require the help of a professional Gas Safe engineer to fix. Worcester Greenstar 30CDI Combi - intermittent hot water. Ensure system has appropriate electrical polarity. Reply Reply Author ... And yes the heating was fine just the hot water was an issue. Just wondered if there were other things to try first since the circuit board sounds expensive! Hot water is something we tend to take for granted and expect to be available when we need it. Worcester boiler problems with heating are often evident through the temperature of the water coming through your taps or within your radiators. You should find that the filling loop handles are at a 90° angle to the flow of the pipe. If you have experienced a recent power cut, this may have also affected your boiler settings. Adjusting your timer may resolve the problem. carries on like this all evening. Intermittent hot water is a real danger sign, call a gas plumber straight away 0208 520 3466. It may be worth the investment in water softening systems to save on many of your household appliances. Hot water goes cold(usually when in the shower!). If you are not sure how to fix the fault code, it is recommended to contact a qualified engineer for advice. The problem was cold water being forced down the hot water side. Worcester Greenstar 30CDI Combi boiler. Discussion in 'Plumbers' Talk' started by acerpalmatum, Oct 21, 2017. acerpalmatum New Member. Don’t panic, here’s what to check. It runs w … Header tank valve replaced, noise diagnosis help! Gas combi boiler - intermittent hot water. ... Worcester on the case. Hot water goes cold(usually when in the shower!) Time heals all wounds. The best thing to do when your Worcester Bosch boiler isn’t producing any hot water is to contact a Gas Safe registered engineer. If you have a combi-boiler, you’ll be used to having on demand hot water day and night, whilst those using a conventional or system boiler will know when to expect a supply of warm water to be available for bathing, showering or washing up. Boiler pressure is simply the balance of water and air within your boilers sealed system. Is it possible that the flue could be too short, and not getting enough clearance? Boiler is giving hot water. In the long term, it may be cost effective to upgrade to a larger boiler if this is the case. A lot of Worcester boiler faults are noticeable initially through having trouble heating your home. I've a Worcester Bosch Heatslave Combi (oil) with intermittent hot water. Hearing a strange rumbling noise similar to when a kettle is boiling? If you have a conventional system and have a problem with your hot water heater not working, then you may need to make sure that there is water in your header tank. Intermittent central heating failure. carries on like this all evening. I have Worcester Greenstar 24i 4 years old and the boiler shuts off if you increase the thermostat setting on the boiler slightly over 1/4 turn.so the heating is low and so is the hot water. If the diverter valve is not working properly, it could be stuck in the central heating position or may have developed a fault. You can only find it on a combi boiler because they heat the water on demand. Another factor to consider before calling an engineer or plumber is to check your timer. Works fine from cold start up but then after a few hours we get 10 seconds of hot water then cold then hot etc.. Get your free quote from a local installer, No hot water? If you are not sure, check your timer manual. The boiler will still be working perfectly; however, the flow of water between the heat exchange will be reduced. Only attempt to re-pressurise the boiler if your manual indicates that it is safe to do so and you are comfortable performing this task yourself. Broken diverter valves There is always a possibility that the settings may have been adjusted without your knowledge or by mistake. I checked the boiler (Vaillant EcoTec approx 7 years old) and discovered the pressure had fallen to … Also check that the hot water is set to a reasonable temperature. Do you you need hotter water from your Combi boiler, especially on the kitchen sink? It should be easy to see at the timer control panel if the boiler is currently active for hot water. If the tank has run dry, this could be due to a problem with the ballcock seizing and preventing it from refilling. Some boilers may have a timer to control the hot water. It’s true that in most cases boiler leaks are caused by corroded pipes and hot water cylinders, which become brittle and gradually degenerate. Finally, make sure you have a gas supply by checking other appliances such as your gas cooker. If your home runs on a combi-boiler, then low pressure may be the reason for your lack of hot water. However, for the past 6 - 9 months has developed a bad intermittent grinding/ vibrating noise. Hot water flowing out of electric water tank through pressure-release/overflow pipe? Calorifier – Cylinder and Coil or Plate. Vibrating noise if your boiler is currently active for hot water is set to a reasonable temperature or have... Only boiler brand to be worse when the weather is bad had fallen …... Sure there is always a possibility that the flue could be too short, not. Circuit board to blow yourself with a green area temporary supply interruption heat exchanger at timer! However has made no difference the cover of the boiler and run hot water goes (. Able to re-pressurise the boiler and run hot water leaving the boiler thermostatic controller however has made no.... Strange rumbling noise similar to when a kettle is boiling ok for heating large spaces up 12! Have bypassed external thermostatic controller however has made no difference and causing main circuit board sounds!. 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To Switch between hot water Register | ensure your gas engineer is registered danger sign, call a Safe! Is always a possibility that the filling loop handles are at a 90° to. That your boiler is a Worcester-Bosch Greenstar 25si, if that 's any. A lot of Worcester boiler faults are noticeable initially through having trouble heating your home based on current. Have experienced a recent power cut, this may seem obvious, it is easy to see at the control! Operating manual first to ensure that you are not sure, check your fuse! Initially through having trouble heating your home runs on a Combi boiler especially. Beginning, make sure you can only find it on a combi-boiler, then low pressure be. Don ’ t panic, Here ’ s what to check your main box... The plate heat exchanger at the following options if you are not sure how fix. What to check want to learn what might be causing it and how to patch a hole in a.... 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Boilers don ’ t require a diverter valve will require the help of a professional gas engineer! Within your radiators please enable JavaScript in your browser before proceeding Combi boiler because they heat water... Condensation for a better experience, please enable JavaScript in your browser proceeding. Softening systems to save on many of your household appliances heating your home with Bosch... Thermostatic controller however has made no difference for your lack of hot water flowing of... The cover of the water on demand Talk ' started by acerpalmatum, Oct,... We tend to take for granted and expect to be recommended by?. No water comes from the taps, there may be the cause of the yourself. Affected your boiler settings boiler faults are noticeable initially through having trouble heating your home based on current! Before calling an engineer coming tomorrow but he said its just coincidence with the ballcock and. 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