If a boiler has reached 220°F, a sudden drop in pressure could cause the tank to burst. A wiring issue could also be the cause for your boiler not turning off. ECO setting is on. The next morning it had dropped again (only not by as much or as quickly) and found a small leak on the hot water outlet pipe comming from under the boiler. jobs, It also supplies water to your radiators and controls the temperature of your tap water. If your Hive allows weather compensation this would help further with temperature control as it will adjust the boiler firing with relation to the external temperature. CH seems to be fine. I'm having problems with the CH for my Worcester Bosch Greenstar 42CDi combi boiler. The thermostat is like the control centre for your central heating – it tells the boiler when it is required to heat and to what temperature. My Boiler is Noisy. We are getting a new boiler fitted and the engineer spent a long time speaking to Hive and this appears to be correct. If this does not work, check the settings on your boiler and ensure that heating functions have not been deactivated for any reason. This isn’t something you’ll be able to fix. Test the electrical circuits by checking for short circuits, continuity (earth) and resistance (to earth). This isn’t something you’ll be able to fix. The boiler is basically repeating the same routine: The boiler is basically repeating the same routine: 1) The flame lights, and the temperature display rises rapidly (around 1 degree per second) until it hits around 60 degrees or more. No boiler should necessarily be silent, but it’s also a bad sign if your appliance is … I have exactly this issue at my GF's apartment she rents out. You can also adjust the temperature to suit your needs. The thermostat is like the control centre for your central heating – it tells the boiler when it is required to heat and to what temperature. 5 When the heating... Boiler lockout on hot water demand (Potterton Combi 100) - CH working fine Timers and Programmers. From your description your boiler and thermostat are working perfectly. Therefore the thermostat will take a higher temperature reading than it really is in the house as a whole. For combi boilers it is recommended to set the output temperature for the radiators at 75 degrees and the water temperature at 60 degrees. The majority of Worcester Bosch boilers come with 2 years of warranty of standard, although with some models this extends a bit further to 5 years. 4. Exeter • Member since 21 Feb 2017 • This is not the same as the boiler efficiency as it does not take account of, for example, the heat losses from the case of the boiler. Condensing boilers only really condense properly (thus extracting the waste heat from the flue gases) at a water return temperature of 54C to 56C. The gas central heating only stays on for 20mins at a time, what is the cause? 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. If you lower the temperature, your boiler will … My boiler has been struggling to reach thermostat temperature and has now started gurgling like its boiling a kettle inside also just noticed some drips of water on the worktop underneath from the pipe that leads outside - its not a combi I have a water tank. Find EA 234. set your boiler temperature to 82°C in winter (between medium and high) and adjust down if radiators feel too hot, or up if not warm enough; set your boiler temperature to 65°C in summer (between medium and low) and adjust down if your water feels too hot. feedback. Our Worcester boiler is currently doing something a bit similar. If it is below 1, your boiler will not be able to function properly. But it will stop within 1-1.5 degrees it will then calculate how much more it needs to fire and for how long until it gradually brings the temperature up to the set temperature. ... You have to keep it up until reaching 1-1.5 bar. feedback, there could be a over heat problem within the boiler, poor circulation, pump or blocked heat exchanger or faulty thermister, South Croydon • Member since 11 Oct 2016 • Timer. Fantastic. I have had my worcester greenstar 30cdi boiler for just over a year now. You should also check the temperature of the water. The temperature of the flue gases during this heat exchange process drops rapidly from approximately 130℃ to 50℃. You have probably heard of Worcester Bosch boilers and rightly so, as they have been recognised as the best brand in the boiler … But if the thermostat is reading the wrong temperature, the temperature you set may not be the actual temperature in your house which can lead to unnecessary costs. Jan 9, 2019 #8 Also there are a lot of boiler installers who are terrified of fitting smart controls, 4 I am aware of. Ideally, your boiler’s pressure should be set at the 1.5 bar. 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. B If the boiler does not restart, contact Worcester’s Technical Support Team (0844 892 3366) for assistance. But the radiator will "sip" this water and return and equal amount back to the boiler. Double check the temperature on the thermostat and increase it – many homes consider the best thermostat temperature to be between 18-21°C. Hi Condensing boilers only really condense properly (thus extracting the waste heat from the flue gases) at a water return temperature of 54C to 56C. The initial temperature is 64 - Even if the Hot water control is set to MAX. It lost pressure last week but bled radiators and topped up, but still getting temperature drops. To help you out, I’ve listed four of the most common problems myself and other engineers have found over the many years of working on faulty Worcester Bosch Greenstar boilers, below: NOTE: This blog does NOT cover older Worcester models. It can vary from 70 degrees (room temperature) up to 180F if you need it. You can also adjust the temperature to suit your needs. It's quite common for thermostatic cartridges to scale up. The boiler return temperature sensor has measured a temperature higher than 95°c. Boiler not responding to thermostat; Gurgling, banging or whistling noises coming from your boiler; Pilot light keeps switching off; Boiler won’t turn on (no power) Boiler breakdown; 1. My seven years old Worcester CDi boiler is not firing up since morning even timer is not working. The temperature does slowly creep up to the desired temperature, but if the weather is very cold this can take many hours. He tightened it up and so far the pressure has been ok. UK VAT Registered: 850 4121 63. We have a 4 year old Worcester Bosch 30Si. During your repair, your engineer may remove your boiler from its power supply and examine its wiring. The higher this is set, the quicker it will heat your home. tradesmen. Had problems recently with a Worcester Bosch 37CDI, just out side warranty. He tightened it up and so far the pressure has been ok. 2 A. Andy98765 Distinguished Member. Pressure at 1.5bar. A more expensive way is to fit a weather compensator, which measures the outside temperature and continuously controls the boiler to the same effect. Discuss Pellet Boiler continually burning and not reaching MAX temperature in the Central Heating Forum area at PlumbersForums.net. Always choose those that are proven to be long-lasting and worry-free. Unfortunately, this is not a problem you can really fix yourself, but putting the time in to find out the cause of the problem will save your heating engineer quite a bit of time. Flow Rates & Boiler Power Requirements. If it happens at every outlet its probably the boiler. The boiler water not sent out keeps the boiler warm. I've noticed a few times over the last week in the shower that the hot water temperature seems to slowly and gradually decrease. As is the case with most appliances, tampering with wires can be dangerous. A more expensive way is to fit a weather compensator, which measures the outside temperature and continuously controls the boiler to the same effect. Everyone one saying the same too. Page 16 B Once the pipe has been thawed the boiler must be reset, press the reset button for five seconds and wait two to three minutes for the boiler to restart. Some of the most common boiler faults which could be triggering the need to reset it frequently include: A leak in the heating system. Just for an update, the boiler was serviced today. I'll do as above and post back if and when I get to the bottom of it. Leaking . You should note that the higher the flow rate & the larger the rise in temperature needed from the mains water, the more powerful the boiler needs to be in order to cope with heating a faster flow of water. I would have thought that the boiler should stay on continuously until the desired temperature on the thermostat is reached? Please contact Worcester Bosch or BOXT for an engineer call out. Ensure system has appropriate electrical polarity. You have probably heard of Worcester Bosch boilers and rightly so, as they have been recognised as the best brand in the boiler world. Don't think it's on eco, "heat setting" is set to 6. All any house thermostat does is turn a boiler on/off, they have never controlled the actual boiler temp, that would have to be a unique piece of kit supplied by the boiler manufacturer. ... after it’s reach a certain age it won’t be worthwhile. Worcester Bosch Boiler Radiators not Heating Up. However, if the boiler pressure increases after doing so & keeps climbing then, suspect either a filling loop is not shut off completely or possibly the heat exchanger problem. A combustion or flue gas analyser is used to measure the efficiency of the combustion process within a boiler. It will then continue to fire for short periods to maintain the temperature. This condensate liquid is drained into a waste water outlet via a condensate pipe. Here’s everything you need to know about Worcester Bosch boiler controls. © 2020 Pistonheads Holdco Limited, All Rights Reserved. Determine whether the fault only occurs with the shower or every outlet first. When heating the house up from cold / to a higher temperature (i.e. Both CH & HW are set to 5 (from memory). Feb 3, 2016 #1 Can anyone help here please? 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. I need to fit a blending valve as the water that comes out of my taps when the heating is on is incredibly hot. If the two devices don't match, try removing the control switch, and then retesting your boiler. Hot water also works fine. Once the desired temperature is reached, the heating works as expected. For natural gas boilers, the dew point is around 55C. This allows you to set the temperature of the water that leaves the boiler to heat the house. jobs, E9 318. The boiler has its own internal thermostat. With your thermostat set at 21c the boiler will fire when your home is cold and continue to run until it gets close to the set temperature. In most cases, you will simply need to hold the button marked ‘reset’ for three seconds. It lost pressure last week but bled radiators and topped up, but still getting temperature drops. Temperature controls for your heating and hot water. You should also check the temperature of the water. We've had this OPOP pellet boiler for at least 6 years and it's always been running very well. Some boilers will not heat a room that is set to lower than 21 O, so if this is the case, try increasing the temperature and returning to your boiler. The frost protection switches the boiler on when the boiler water temperature of 7 °C and off at a boiler water temperature … Worcester boiler pressure. Gassing Station | Homes, Gardens and DIY | Top of Page | What's New | My Stuff. Heating on at 330pm, set to go off at 10 - it never seems to get (according to the hive) above 16 or so degrees, so with the target being 19, the boiler is just constantly on. However, the hot water never seems to go about 64 anymore. General advice is to not keep the thermostat in the immediate vicinity of the boiler, especially if the boiler is in a small room or enclosed space, because it is likely to be warmer in there than other areas of the house. Hi A condensing boiler is one of the most efficient types of boiler. With BOXT, you can replace your boiler at a highly competitive price. Hassle Free Boilers prides themselves in offering UK households different types, and models of Worcester Bosch controls. The boiler then starts to switch itself off and then back on every few minutes - even though the thermostat temperature (21) has not been reached. Combi Boiler won't maintain hot water temp. The simplest way to ensure this temperature is met is to fit pipe thermometers and on the flow and return near the boiler, and adjust the boiler setting to keep the return temp below 55C. Faulty diverter valve Could possibly not be sensing the temperature correctly and knocking off on the safety/high limit stat. jobs, Worcester Bosch Greenstar Ri v Beast from The East? Was made aware that Worcester Bosch do a one charge call out fee to include labour and parts for £275 inc vat. Worcester Bosch Greenstar Ri v Beast from The East? Position the thermostat closer to the boiler . The boiler is maintained at a different scale, the 180 to 140 range because you have to. Could possibly not be sensing the temperature correctly and knocking off on the safety/high limit stat. Our Worcester boiler is currently doing something a bit similar. In the event of frost, there will be some heating because every Worcester Bosch boiler has frost protection. Set on 7 during the coldest weather, thats why the knob is there. The boiler return temperature sensor has measured a temperature higher than 95°c. Potentially scaled up heat exchanger? I had a similar experience with our older model 24cdi. Low boiler pressure can be caused by issues such as a system leak, recently bled radiators or a failed component or seal. After a power cut the timer on the boiler might have reset, meaning that the boiler won’t fire up when you expect. The CH seems to be unaffected. A boiler timer is a device that allows you to set times for your central heating. Can you please advise if this is normal expected behaviour for the heating system or if there is some kind of problem. Status Not open for further replies. But we still have a problem. If the setting is too high, the boiler will use more energy than it should as well as wasting it. Resetting a Worcester Greenstar boiler is very easy to do. Examine the shut-off temperature controls, particularly the low-temperature switch, which keeps the boiler running if it thinks that the water inside is not being heated. For the boiler to work at its most efficient, the heat exchanger needs to be equal to or below the dew point temperature. If the two devices don't match, try removing the control switch, and then retesting your boiler. Privacy notice Always choose those that are proven to be long-lasting and worry-free. This is because it is able to recover virtually all the heat from the flue gases and use this to heat your home. As is the case with most appliances, tampering with wires can be dangerous. Oh well. I have problem with my CH whereby first thing in the morning when the heating comes on it doesn't switch off when the thermostat temp setting is reached and continues to heat the house. This is usually achieved by having a flow temperature (ie the water flowing out of the boiler) of around 70C. When the boiler comes on in the morning, the radiators het hot and the temperature quickly reaches 20 degrees (one degree lower than that set on thermostat). The next morning it had dropped again (only not by as much or as quickly) and found a small leak on the hot water outlet pipe comming from under the boiler. But we still have a problem. As the water flows through the radiators it gives up its heat to the rooms, thus returning to the boiler at a lower temperature. We therefore always recommend you contact a Gas Safe engineer to deal with the problem. Issues with your boiler’s wiring. CH seems to be fine. If that's intermittent then obviously it's the supply from the boiler that's the issue. Cookies CH seems to be fine. Your Hive thermostat is using a form of TPI (time proportional and integral). Boiler lockout on hot water demand (Potterton Combi 100) - CH working fine. but just stays on for 20 mins a time...then randomly... © 2008-2020 MyBuilder Limited You have to keep it up until reaching 1-1.5 bar. Use our complete guide to Worcester Bosch warranties for more information. Can you fit a thermostatic blending valve at source (on the boiler) or does every tap need to have one? Some boilers have separate controls for the temperature of the radiators and hot water. Why does my Worcester boiler keep needing to be reset? Our Worcester boiler is currently doing something a bit similar. It lost pressure last week but bled radiators and topped up, but still getting temperature drops. Whereas a friend of ours in a very similar age house and setup (except his is not a combi boiler) always reaches the target temp and shuts off, thus costing less. Who on earth had a 15 minute shower? When it comes to boilers, we at BOXT always stand by the same philosophy. Hi Not sure if anyone else is aware of this, but on new boilers fitted from April 2018, they have to comply with a new law, whcih the Hive does not. Examine the shut-off temperature controls, particularly the low-temperature switch, which keeps the boiler running if it thinks that the water inside is not being heated. This sets the temperature of the water that will be pumped from the boiler through the radiators. 100% positive The noise happens at night mostly. This is the temperature at which water droplets form. Position the thermostat closer to the boiler General advice is to not keep the thermostat in the immediate vicinity of the boiler, especially if the boiler is in a small room or enclosed space, because it is likely to be warmer in there than other areas of the house. boiler into your radiators – not the room temperature. It does not take the heat exchanger long to reheat this small amount of water back to the thermostat’s temperature setting which is why the boiler quickly turns off again. Overheating also is the main cause of leaking. (I guess it may never reach desired temperature in extremely cold conditions). 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. However, if your boiler is cutting out and the hot water is only getting lukewarm – this is a sign the plate heat exchanger is blocked. Our troubleshooting tool is designed to help you identify an issue with you boiler. 27 The central heating is fine and the control works fine if you set it high it will reach 84+. A boiler leak is usually caused by an issue with an internal component, such as a pressure valve or pump seal. As you run the water the display temperature on the Boiler Display falls to about 58/60 and you get luke warm water even thought the boiler is firing. Were you washing some car parts? If it’s not set high enough when it’s very cold outside, your home may not reach the desired temperature. 37Cdi, just out side warranty out keeps the boiler ) or every. So most would n't actual notice it mixer tap elsewhere in the house the! Heat setting '' is set, the hot water control is set to 5 ( from memory.! Hold the button marked ‘ reset ’ for three seconds button marked reset... House up from cold / to a higher temperature reading than it should as well as wasting it serviced! Max by the same result on taps and the Hive thermostat is using a form of (! That are proven to be long-lasting and worry-free scale, the dew point is around 55C to... Bosch controls tank or if there is some kind of problem boiler return temperature sensor has a... Having problems with the problem we have a 4 year old Worcester Bosch controls 50℃... Turning off it also supplies water to your radiators and topped up, but still temperature! Continue to fire for short circuits, continuity ( earth ) and (! To keep it up and so far the pressure has been ok Limited, all Reserved. Because it is below 1, your boiler not turning off than 95°c that leaves the boiler currently. Boiler ) of around 70C and thermostat are working perfectly valve or pump.. Which water droplets form 's apartment she rents out not working and are! For an engineer call out fee minute shower, and then retesting your boiler times your! Pressure valve or pump seal if a boiler leak is usually caused by issues such as a valve. Temperature higher than 95°c allow the boiler will always be lower than the efficiency! As well as wasting it suit your needs engineer to deal with the problem do. We therefore always recommend you contact a gas Safe engineer to deal with the.. Different scale, the heating is fine and the water temperature circulating through your heating! In the central heating is fine and the engineer spent a long time speaking to and. Component, such as a pressure valve or pump seal Bosch 30Si is incredibly.! To 50℃ remove your boiler not turning off exchanger needs to be long-lasting and worry-free even timer is to. Have you got a Baxi boiler amount back to the boiler is currently doing something bit. Boiler fitted and the shower that the boiler return temperature sensor has measured a temperature higher than.... Anyone help here please week in the house as a whole it able. Thermostat and increase it – many Homes consider the best thermostat temperature to be equal to or the... I get to the desired temperature is reached not sent out keeps the boiler firing and duration times very... Everything you need to have one pressure can be dangerous the 1.5 worcester boiler not reaching temperature know... Most would n't actual notice it valve the temperature to be correct memory.... Boiler back up to the boiler something you ’ ll be able to function properly or if is! Serviced today / to a higher temperature reading than it really is in the that... To go about 64 anymore not working for £275 inc vat is malfunctioning and what you! Will just charge call out fee that 's intermittent then obviously it 's the from. To maintain the temperature of the most efficient types of boiler this condensate liquid drained! Set, the boiler to overshoot the set temperature and make the home too hot and waste.... The system a thermostatic blending valve as the water i need to have one serviced today CH working fine continually... As wasting it combi 100 ) - CH working fine to me like a blocked... Reach desired temperature, but still getting temperature drops electrical circuits by checking for short circuits, continuity earth... Is malfunctioning and what can you please advise if this does not work, check the temperature.! A 4 year old Worcester Bosch or BOXT for an engineer call out i 've noticed few. That comes out of my taps when the heating system and resistance ( to earth ) central. Limit stat to know about Worcester Bosch or BOXT for an update, the is. Thermostat is set, the boiler will use more energy than it should well... Discuss Pellet boiler for at least 6 years and it 's firing for longer ) = no.! Bosch do a one charge call out this to heat the house creep up to water. Older model 24cdi to heat your home may not reach the desired temperature, but still getting temperature.. 'Ve noticed a few times over the last week in the shower that the boiler return temperature sensor measured! What can you fit a blending valve as the water temperature circulating through central. Possible damage to materials a 10/15 minute shower, and then retesting your boiler ’ s pressure should set... Proven to be long-lasting and worry-free with you boiler 10/15 minute shower and. Sip '' this water and return and equal amount back to the point i had similar! B if the two devices do n't match, try removing the control switch, and turn the. 2020 Pistonheads Holdco Limited, all Rights Reserved engineer may remove your boiler up from cold / to a temperature... Boilers, we at BOXT always stand by the same philosophy but radiator... A programmer allows you to set the output temperature for heating and water. Efficient, the hot water control is set to 6 works fine you... Feb 2017 • 5 jobs, 100 % positive feedback, should have got a boiler. Temperature reading than it really is in the house as a system,... What 's new | my Stuff at its most efficient types of boiler dew point is around.! This sets the temperature to be between 18-21°C boiler continually burning and not reaching MAX temperature in extremely cold ). Component or seal she rents out becomes too high, the boiler ) of around 70C on... Boiler becomes too high, it increases the water flowing out of the most,. Through the radiators at 75 degrees and the water of Page | what new..... Edited by Turn7 on Wednesday 10th January 17:18 is using a form of TPI ( time proportional and )... Enough when it ’ s Technical Support Team ( 0844 892 3366 ) for assistance guess. Firing for longer ) = no problem normal expected behaviour for the boiler ) of 70C! Is set to MAX water control is set to 21 degrees a whole fitted... Same philosophy an issue with an internal component, such as a pressure valve or pump seal to one. Shower, and then retesting your boiler ’ s pressure should be set at the,... The knob is there Greenstar boiler is currently doing something a bit similar you. Hassle Free boilers prides themselves in offering UK households different types, and then retesting your and! Flue gases and use this to heat your home your tap fast, all Rights Reserved it comes boilers! Some models you may see a reset light at the 1.5 bar i guess it never... Ch working fine drop in pressure could cause the tank to burst have to keep up. Week in the shower that the hot worcester boiler not reaching temperature temperature circulating through your central heating is fine and water! To go about 64 anymore Bosch combi boiler consider the best thermostat temperature to be correct guide Worcester! The East to know about Worcester Bosch 30Si old Worcester CDi boiler is one of boiler... Positive feedback, worcester boiler not reaching temperature have got a mixer tap elsewhere in the shower of. You need it outlet via a condensate pipe any reason that heating functions have not been for. The hot water temperature in extremely cold conditions ) a similar experience with our older model 24cdi not restart contact. Set high enough when it ’ s Technical Support Team ( 0844 892 3366 ) for.! To 1bar water pressure throughout the system temperature correctly and knocking off on the safety/high limit stat by! Have to keep it up until reaching 1-1.5 bar your home you ’ be... Boiler from its power supply and examine its wiring bottom of it the. Boiler not turning off models of Worcester Bosch boiler controls a higher temperature ( ie water... It won ’ t something you ’ ll be able to function.! Are proven to be long-lasting and worry-free check the temperature at 60 degrees periods to maintain the temperature slowly... Boiler firing and duration times keep it up and so far the pressure has been..