Your boiler will have separate controls to turn on the heating and hot water. 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. 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. 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? The hot water is fine and no problems but the green light does not come on my boiler and there is no heat. In the event that it gets stuck, you could end up with hot water but no heating, or vice versa. I had to drain my water down to repair a leaking cold water pipe, now I have no hot water. My Worcester boiler heats the central heating water ok, and seems to heat the hot tap water if the central heating off. 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. How to fix Your diverter valve is going to need replacing, or you’re going to need a new boiler. 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 . I am at complete loss here as I was under impression there should be no hot water or heating with 0 bar. The water that comes from the tap has not been through the boiler. Prior to this model of Worcester Bosch boiler being installed, I would have scored it 5 stars. A boiler timer is a device that allows you to set times for your central heating. 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 Over the last 6 months, we've noticed our hot water running more and more tepid. Cause: the common cause for a leaking boiler is blown pump seals which can happen over time to any boiler. #3 – Lots of hot water but no heating. A Leaky Boiler. Here's some help if you've got no hot water from your boiler. 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 Hi - thanks in advance. 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. The pressure also drops down into the red band. Worcester boiler - hot water running tepid (19 Posts) Add message | Report. 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. Engineer changed the PCB , Fan & 3 sensors. 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 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 pressure increases to 3 again when working and dropping to 0 within 90min when CH is off. The boiler will still be working perfectly; however, the flow of water between the heat exchange will be reduced. Here’s everything you need to know about Worcester Bosch boiler controls. Test the electrical circuits by checking for short circuits, continuity (earth) and resistance (to earth). Water problem has been the same with central heating on or off. Worcester Bosch 24CDi - hot water but no heating. Worcester greenstar 30si - no hot water. Worcester Bosch Fault Code EA. Heating works fine. Timers and Programmers. This page contains the information required to help repair and diagnose the fault codes being shown on the boiler display. This is a common fault linked to a diverter valve. Worcester 28Si II hot water fault? The decline occurred over a couple of months and first began to affect the upstairs taps. No hot water and no heating. 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. If your Worcester boiler is pre-2004, check my blog post ‘5 Common Faults and Fixes for your Faulty Worcester Boiler’ (INSERT LINK). Many of the problems you encounter with gas boilers, you will not encounter with an electric one. Broken diverter valves 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. No fault lights appear. 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. 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. 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. We have a Worcester combi boiler that’s about 12-15years old and is serviced annually. Heating & Hot Water; Boiler Spares; Worcester Bosch; Worcester Bosch. 3. You simply have to run the hot tap at a slower rate than you normally would. so the idea of slowing flow to hot water taps will not increase the water … If it’s a combi boiler, hot water goes directly from it to the taps. However, to date I've had to call out an engineer on 2 maybe 3 occasions. Each time a drop in pressure has caused the problem. Once it has, see if there is any hot water. 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. 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. If the temperature of the water increases after switching on the heating, this is another sign of a faulty diverter valve. The diverter valve is likely stuck on the hot water side. 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. I noticed the pressure had dropped and I have therefore repressurised it (it is now between 1.5 and 2 in the green). 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. The blue light is on as usual and does not flash at all. 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. 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. Diagnosis: A Worcester boiler with a leak will usually result in a boiler with low pressure and a boiler that is locking out. The following table will take you through the fault finding sequence for rectifying a Worcester Bosch boiler with this fault code Discussion in 'Plumbing and Central Heating' started by jawdee, 21 Sep 2010. 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. Hot water has stopped working. Boiler water is circulated again and again. Boiler fires when Hot tap turned on but goes out after about 10-15 seconds. 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. For heating systems that include a combi boiler, there could be an issue with the diverter valve. Adjusting a combi boiler Recommended reading: Water Dripping from Boiler: How to Fix a Boiler Leaking Water from Bottom A programmer allows you to set different times, and temperature for heating and hot water. 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. 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. This issue can be caused by anything from faulty motorised valves, broken system diaphragms and airlocks, to low pressure or a broken thermostat. comehomemax Thu 29-Dec-16 17:05:00. The Worcester Bosch Ri range of boilers will display a flashing blue light when there’s no gas being supplied to the unit. No heating or 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 … A system or conventional heat-only boiler feeds its water in pipes around the hot water cylinder, which warms up the fresh water inside. 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 Step 4: No hot water in electric boilers. Thanks all - Worcester on the case. Ensure system has appropriate electrical polarity. What is a Combi Boiler . Worcester 28CDi Combi Boiler - No Hot water takes for ages! Post by pondfieldlane » Sat Jul 20, 2013 6:31 pm. 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. 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. In cold weather, combi boilers can experience ‘low flow rates’, which may lead you to think your combi boiler has no hot water. Page 1 of 2 1 2 Next > jawdee. 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. The fault code is likely to be EA338.. 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