Broken diverter valves Prior to this model of Worcester Bosch boiler being installed, I would have scored it 5 stars. Once it has, see if there is any hot water. This valve allows a combi boiler to switch between heating your radiators and your hot water, so when you turn on your hot tap, the diverter valve opens and sends hot water … But if the central heating is on and hot water is drawn the boiler faults out and displays the rapid flashing fault light -8 flashes per sec? For the past six months we’ve had problems with hot water only lasting a few minutes in the shower or bath, before it runs cold. For heating systems that include a combi boiler, there could be an issue with the diverter valve. Heating works fine. You simply have to run the hot tap at a slower rate than you normally would. a turbine in a gas boiler to prove demand for hot water.is a turbine really required as in my knowledge a turbine rotates at different speeds to supply an output in this case to heat water.via boiler electronics and any limiter. Naturally, it can be very frustrating when your boiler ceases to do the very thing it was designed to do – provide your home with heating and hot-water. Step 4: No hot water in electric boilers. No heating or hot water. Timers and Programmers. so the idea of slowing flow to hot water taps will not increase the water … The Worcester Bosch Ri range of boilers will display a flashing blue light when there’s no gas being supplied to the unit. Worcester greenstar 30si - no hot water. The hot water seems to be fine even with 0 pressure and I was very surprised that CH is also working when I put it on this morning. Many of the problems you encounter with gas boilers, you will not encounter with an electric one. Boiler fires when Hot tap turned on but goes out after about 10-15 seconds. Boiler water is circulated again and again. The pressure increases to 3 again when working and dropping to 0 within 90min when CH is off. A programmer allows you to set different times, and temperature for heating and hot water. Water problem has been the same with central heating on or off. However, to date I've had to call out an engineer on 2 maybe 3 occasions. The blue light is on as usual and does not flash at all. Engineer changed the PCB , Fan & 3 sensors. Adjusting a combi boiler Worcester Bosch 24CDi - hot water but no heating. Discussion in 'Plumbing and Central Heating' started by jawdee, 21 Sep 2010. Worcester 28Si II hot water fault? Hot water has stopped working. Heating & Hot Water; Boiler Spares; Worcester Bosch; Worcester Bosch. Ensure system has appropriate electrical polarity. It is possible that the hot water or heating may have been set to off by mistake, or the setting has been inadvertently changed. Worcester Greenstar 24i and No Hot Water but Have Central Heating by Dragorphis1 » Sat Jan 27, 2018 12:40 pm Last post by Dragorphis1 Sat Jan 27, 2018 12:40 pm The water that comes from the tap has not been through the boiler. I am at complete loss here as I was under impression there should be no hot water or heating with 0 bar. No fault lights appear. 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. This is a common fault linked to a diverter valve. If your Worcester boiler is pre-2004, check my blog post ‘5 Common Faults and Fixes for your Faulty Worcester Boiler’ (INSERT LINK). The decline occurred over a couple of months and first began to affect the upstairs taps. Worcester boiler - hot water running tepid (19 Posts) Add message | Report. The pressure also drops down into the red band. Red Flashing Light On Worcester Boiler 24i Junior: ... the other day on the phone we where told to put a hot water bottle or pour some hot water on the pipe, today the engineer got it working but tonight the light started flashing again so I pressed the reset button to try to light the boiler again. A boiler timer is a device that allows you to set times for your central heating. How to fix Your diverter valve is going to need replacing, or you’re going to need a new boiler. While they are more reliable than gas boilers, they are not always perfect so from time to time electric boiler users can find themselves with no hot water. When I run the hot water tap the boiler fires up but the pressure gauge goes into the red band and the boiler shuts down. The diverter valve is likely stuck on the hot water side. Page 1 of 2 1 2 Next > jawdee. #3 – Lots of hot water but no heating. I have tried using the timer to turn the heating on, and I've tried just flicking the switch to 'on' but both methods have proved unsuccessful. Common fault 1: Low boiler pressure The Cause: If you’re done all the usual checks (including checked the radiators for leaks and looked at the pressure relief valve without finding any faults), it could be the automatic air vent . Diagnosis: A Worcester boiler with a leak will usually result in a boiler with low pressure and a boiler that is locking out. I noticed the pressure had dropped and I have therefore repressurised it (it is now between 1.5 and 2 in the green). comehomemax Thu 29-Dec-16 17:05:00. To determine whether there’s a fault with the boiler or the gas supply, check if other gas appliances around your home, such as the stove, are working. In the event that it gets stuck, you could end up with hot water but no heating, or vice versa. The boilers are designed to operate using the water directly from the main supply that results in stronger water pressure and ensures that you would never be lacking on hot water again. If the temperature of the water increases after switching on the heating, this is another sign of a faulty diverter valve. 3. If it’s a combi boiler, hot water goes directly from it to the taps. The central heating is fine but when we run a bath, we used to have to add cold water to it - now we can fill the dc' s bath without any cold at all. My Worcester boiler heats the central heating water ok, and seems to heat the hot tap water if the central heating off. Each time a drop in pressure has caused the problem. Test the electrical circuits by checking for short circuits, continuity (earth) and resistance (to earth). boiler circulation cold combi flame flow heating hot hot water inside lukewarm no hot water pipe problem pump system tap temperature test vaillant valve water water tap worcester Discuss Worcester 240 Combi no hot water in the Central Heating Forum area at PlumbersForums.net A system or conventional heat-only boiler feeds its water in pipes around the hot water cylinder, which warms up the fresh water inside. This page contains the information required to help repair and diagnose the fault codes being shown on the boiler display. Over the last 6 months, we've noticed our hot water running more and more tepid. If your central heating is functioning perfectly but there is no hot water coming from your shower or taps, it is likely an issue with the diverter valve. The fault code is likely to be EA338.. Basically, I own a flat with a Worcester Bosch Greenstar 24i/28i Junior combi boiler and although the hot water works fine, I am not getting any response when it comes to central heating. Here’s everything you need to know about Worcester Bosch boiler controls. Cause: the common cause for a leaking boiler is blown pump seals which can happen over time to any boiler. I have a Worcester Bosch Greenstar 28i Junior boiler and I have no hot water or heating, there is no fault indication shown via the blue light. In cold weather, combi boilers can experience ‘low flow rates’, which may lead you to think your combi boiler has no hot water. Here's some help if you've got no hot water from your boiler. Worcester Bosch have a wide range of combination boilers ranging from our design-led Lifestyle range, ... the Greenstar Style range is a stunning design-led boiler with no compromise on quality. Hi - thanks in advance. I had to drain my water down to repair a leaking cold water pipe, now I have no hot water. Worcester 28CDi Combi Boiler - No Hot water takes for ages! A Leaky Boiler. The hot water is fine and no problems but the green light does not come on my boiler and there is no heat. What is a Combi Boiler . Recommended reading: Water Dripping from Boiler: How to Fix a Boiler Leaking Water from Bottom If your boiler seems to be working and your hot water supply is still functioning, but your central heating is not working, then the problem is either down to the settings on your boiler and central heating system or because a component of the boiler – almost certainly the motorised diverter valve – is broken. The modern highly efficient units come, being a stainless steel condensing boiler with an inbuilt heat exchanger that operates in order to serve the customers with hot water immediately. Worcester Bosch Greenstar 24i No Hot Water? 5 May 2011 at 8:51AM edited 30 November -1 at 12:00AM in LPG, Heating Oil, Solid & Other Fuels 4 replies 15.4K views Your boiler will have separate controls to turn on the heating and hot water. Thanks all - Worcester on the case. The worcester combination boilers have a preheat function that you can turn off and on with the ECO button.When the ECO mode is on the boiler will no longer preheat and it may take longer for the water from your taps to run hot, however you will save money on your gas. No hot water and no heating. Worcester Bosch 28CDi No Hot Water I was asked by a lady to look at her Worcester Bosch 28CDi combination boiler because her hot water performance had been gradually declining before failing altogether. The boiler will still be working perfectly; however, the flow of water between the heat exchange will be reduced. We have a Worcester combi boiler that’s about 12-15years old and is serviced annually. Combi boilers provide heating and hot water on demand and the diverter valve directs the hot water to either the radiators or the hot water outlets. The aptly named diverter valve diverts the water to either your radiators, hot water outlets or both – depending on what you’re demanding from it. This issue can be caused by anything from faulty motorised valves, broken system diaphragms and airlocks, to low pressure or a broken thermostat. Worcester Bosch Fault Code EA. Post by pondfieldlane » Sat Jul 20, 2013 6:31 pm. If you still have no hot water or no heating after checking the above steps, then you will want to check that the boiler settings are correct. 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. 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