Boiler not working in both hot water and central heating modes. This means that the boiler is undertaking a three way valve test and is therefore in test mode. Home Boilers How to relight pilot light on Worcester boiler. Slow flashes tend to be an ignition lock out. GreenGoblin , 19 Jul 2020 This is particularly common with the old Highflows and some RSF models, as they were built with overheat thermostats. To boost your boiler pressure back to normal levels, you can follow the steps for re-pressurising or call out an engineer to help. When I am NOT using water ANY nevermind hot it starts up, blue light and water running thtough first pipe. If the pressure continues to drop, contact BOXT or Worcester Bosch as you may have a leak. There are a few other things that may have gone wrong to mean you have to endure a cold shower. This boiler component is responsible for controlling both the hot water flowing to your taps/showers and the hot water for your central heating system. If the issue continues, then contact either Worcester Bosch or BOXT. Always call in the experts, especially with older boilers as there can be numerous parts failing at the same time. Check service mode switch is in the minimum position. The Cause: This one’s quite specific. If you isolate the electric supply then reinstate it after a few seconds the light shouls stop flashing and the boiler might work, sometimes the flashing might stop on its own. Heat off, water set to come on and heat on frmand only. You can even have it installed as soon as the next day! This means the flow rate in the heat exchanger is too low. Your boiler may have gained or lost too much pressure or even lost power completely. If you add up the cost of a valve, the tools needed to do the job, and the hourly rate of a skilled engineer will be expensive. EA338 or A281 – A leak somewhere, either within your boiler or around the system. means the control box or the heat control module (HCM) is defective. The air pressure switch and tubes need to be replaced. The fault code C7 214 means that the fan isn’t running properly. Finance available subject to status. Thanks, This is probably the most informed and helpful advice I have ever seen on the Internet. Older boilers are more prone to faults, and over the years I’ve received quite a few calls about old, faulty Worcester boilers. Wondering what has happened to the boiler, answer nothing. The boiler is waiting – the actual temperature is higher than the calculated or selected boiler temperature. A7? Pick the brains of our senior engineers who work hard to guide you through any boiler problems. This means that there is an issue with the Tank negative thermistor coefficient (NTC) and may be defective. ea fault flashes on the worcester bosch boilers when the main circuit board or printed circuit board has detected a fault , the electronic safety circuits then blocks the boiler from operating,the electronic digital displays the EA fault together with a blue flashing light and flashing red reset button. Contact BOXT or Worcester Bosch for an engineer call out. Discussion in 'Plumbing and Central Heating' started by mutamist, 14 Apr 2015. mutamist. The control unit may need replacing. Another reason for the fault code is there could be a blockage in siphon or the condensate discharge, check not frozen or blocked. The fan lead and connector needs an inspection and possibly replacing. This means the flow / heat exchanger temperature sensor differential is too great. There could be: a potential water leak or that your pump either needs replacing or freeing due to the pump running dry and may have become stuck. There are … This means that the boiler is undertaking an ionisation oscillator test and is therefore in test mode. This fault code symbolises an internal error within the boiler system. With BOXT, you can replace your boiler at a highly competitive price, knowing you are investing in a boiler that will last many years – rather than spending money on your old boiler that is on the way out. If the issue persists then contact Worcester Bosch or BOXT for an engineer call out. Are you finding your boiler isn’t turning on or functioning whatsoever? This can cause issues like your boiler overheating and eventually locking out. How to solve Worcester Greenstar diverter valve problems, Therefore, if you find your valve is sticking frequently and causing trouble - then this is a great time to begin looking for a, All modern combi boilers by law must have a condensate pipe which vents any harmful flue gases from your home. This means there may be an issue regarding flame loss. The low loss header temperature sensor is faulty. If you need to determine if there is a fault with your gas supply or boiler, you should check any of your home’s other gas appliances like the hob, oven or fire. Locate the reset button on your boiler – Look for a button that has a flame, flashing light, or a cross written through it. This means the contacts for the safety temperature sensor have shorted or the safety temperature sensor has detected a temperature higher than 130°c. This means that an incorrect Heat Control Module (HCM) has been installed. I called a plumber and he said it’s the pcb board, I paid him £300 to fit a new one and 2 days later the same problem happens again. They outshine many other big boiler brands when it comes to their popularity, but why? Whilst replacing your central heating pump is an option - after it’s reach a certain age it won’t be worthwhile. Your tap water is lukewarm. Or you have no hot water but do have heating. The air/gas ratio control valve might need replacing. This way, when you notice your boiler acting up, you can think logically to decide whether the issue is detrimental to your boiler’s health - or easy to solve. Short circuit of the temperature sensor at the heating block – temperature sensor may need replacing. 1 long flash, 4 quick flashes, 5 second gap, 1 long flash, 4 quick flashes, 2 long flashes, 4 quick flashes, 5 second gap, 2 long flashes, 4 quick flashes. This means the flame failed during burner operation. This isn’t something you’ll be able to fix, please contact Worcester Bosch or BOXT to take a further inspection. 08086606 VAT No. Do you need help with your faulty Worcester boiler? DIYnot Forums. This means that the primary flow temperature has exceeded 95°c. This means the flow temperature sensor contacts have been interrupted. All Worcester Bosch boilers installed in the last decade will have a control panel on the front clearly displaying Worcester boiler fault codes. The (NTC) sensor may also be defective. This means the pump is stuck or running with air in the system. Look around your boiler, pipes, radiators, valves, and even your water pumps for any damp or swollen patches. More sudden and dramatic drops in boiler pressure can indicate a more pressing matter to deal with. If the issue persists, please contact Worcester Bosch or BOXT to take a further inspection. Your guarantee will also have expired and you’ll find it difficult to get a service contract. Status Not open for further replies. This will be to prevent any further damage occurring and to remove potential danger. This means the heat control module (HCM) is void. Or there may be an issue with the fan operation. Let’s investigate some of the more notable Worcester boiler problems, so if they arise, there’s no need to panic. Renting. Unfortunately, you won’t be able to fix this problem. Are all the appliances around your home receiving a gas supply? Sadly, having a faulty diverter valve is not good news. Please contact Worcester Bosch or BOXT so someone can take a further inspection. EA225 or D5 – Condensate pipe is blocked. Take a few minutes to answer our quick and simple questions on the BOXT site, where we will find your perfect boiler match. The following table or page contains the information required to help repair and diagnose the fault codes being shown on the boiler display. In the case of Worcester boilers, their fault codes start with EA. 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