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worcester boiler

Worcester Bosch (commonly referred to as Worcester) is a United Kingdom based heating and hot water products manufacturer.The company was founded in 1962 by Cecil Duckworth as Worcester Engineering Co Ltd in Worcester, England. After changing its name to Worcester Heat Systems Ltd, in 1992 the company was acquired by Robert Bosch GmbH, adopting the new name of Worcester Bosch.
Headquartered in Warndon, the company employs more than 2,000 people across the headquarters and manufacturing plants in Worcester and Clay Cross, Derbyshire, including a network of over 300 service engineers and over 80 technically trained field sales managers.

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  1. W

    Worcester Boiler on the Blink... Literally! All Lights Flashing

    My Worcester Combi Boiler is not working, instead the display flashes on and off repeatedly, as shown in <a href=" View: https://youtu.be/Touvx2c3RJE ">this video</a> I took when turning it back on this morning (it had been off overnight) - it shows the behaviour, but if that fails, all the...
  2. C

    Worcester boiler noise

    Our boiler has started making a noise on start up and when it kicks in and out engineer says it’s an ignition coil bracket and nothing to worry about but it sometimes gets worse and it went on for few seconds todays (5) like it was stuck and then freed itself and might have been coincidence but...
  3. S

    Flow temperature discrepancy

    Morning all, I have a Worcester Bosch 8000 life 40kw boiler on system with 7 radiators and the boiler is located in the loft of a 1907 end of terrace house. It has been range rated down to 50% and I currently have the flow temperature set to 64, due to slow warm up. I recently purchased a...
  4. R

    URGENT Seized baffles in worcester boiler

    Seized baffles - can anyone give advice how to free them ? Worcester Camry boiler
  5. J

    Worcester Boiler - GREENSTAR 8000 Life - Heating anomaly

    Worcester Boiler - GREENSTAR 8000 Life - Heating anomaly I have recently noticed when I have lost power to my boiler and power is then reinstated that the Central Heating comes on. Is this the norm?…ALL CH controls are off.
  6. P

    Worcester boiler thermostat

    Hi My boiler Worcester Comfort RF 1 thermostat states "permanently 5 degrees". I cant get my wall thermostat to go above 5 degrees. I have to put it in the fridge to trigger the boiler. My hot water is fine. Does anyone have any idea whats going on? Many thanks, Paul
  7. G

    Rusty flue replacement?

    Hi, I have just noticed a damp patch around where my boiler flue exits through to outside wall along with a rusty colour around the collar of the flue bend. I’ve checked the external wall & there’s no water coming in from outside but the flue terminal also has a rusty colour. My regular boiler...
  8. K

    Worcester boiler losing pressure only after boiler had been on

    My Worcester boiler is losing pressure. It only happens after the boiler has been on and it loses approx 0.5 bar each time. The expansion vessel was replaced last year and no improvement, I have checked the rads, no issues, also no obvious water patches on walls ceilings etc. I have also used...
  9. S

    Worcester Boiler - Fault has the engineer stumped (video)

    Hello, My mum has a Worcester Greenstar HE30 boiler (15+ years old). Since its last service (and possibly coincidentally) it has been making a booming/banging sound randomly. This is a noise like a pocket of gas igniting and can be loud enough to make you jump. It's been impossible for the...
  10. J

    How noisy is a Worcester Bosch 39CDi boiler?

    We’re thinking of replacing our veritable Ideal Mexico Floor Standing Boiler (installed by me in 1985 and pretty much reliable ever since!) with a Worcester Bosch Greenstar 30CDi boiler. Question: How noisy is it? We’re OK with the noise from our old boiler but we’re worried about any...
  11. I

    Advice on which boiler to choose

    I currently have installed a Worcester Greenstar 24i Junior boiler in my 2 bed house, I think it's about 12 years old and it's generally been fine (except it is a bit annoying that you can't alter the hot water temperature). but it's getting a bit cranky and faulty now. My regular engineer...
  12. P

    Worcester boiler makes intermittent rumbling noises

    Our boiler makes these very loud rumbling noises every 2-3 minutes. We're quite used to them now but they have become a lot more regular over the past year or so (it only used to happen once every half an hour or so) and they can be quite annoying. Our boiler is a Worcester Greenstar 24I Junior...
  13. F

    Can I pair up 2 Santon Cylinders with this new Worcester Boiler?

    Hi all Bit of a story here. We moved into our house in March 2021 and had lots of jobs to do. On buying the house we were told that the current Boiler was not fit for purpose and we received a £2,500 rebate off the house price so we could get a new boiler fitted. So, the new Boiler was...
  14. JPC123

    Which Worcester boiler?

    Hi - I have been given 2 options of boiler to fit in my small flat, a Worcester 2000 combi or a Worcester 28 compact. The W 2000 is £150 cheaper with 6 year guarantee and the compact has 10 year. I have read the later on repair costs on the 2000 are lower as it easier to work on, I would be...
  15. M

    Worcester Boiler is crashing/lockout randomly when using central heating.

    Hello, I've previously had an issue with my boiler pressure getting too high with the central heating on and needing a reset. I had a gas plumber come round and he swapped the expansion vessel. The pressure issue seems to be fixed but now there is another issue... When I turn the central...
  16. G

    Worcester combi 25Si burner light out

    Hi all. was wondering if anyone knew why my hot water is not working on Worcester Greenstar 25Si . sequence of events: I removed a radiator for decorating , shutting of valves etc then repressurised the boiler back up to 1.5. All seemed to be working . I turned off water overnight. Next day I...
  17. M

    Blue light constant on Worcester boiler but no heat

    Blue light on but no heat from radiators. When I reset the boiler, there is a slight chugging noise like it’s wanting to fire up but can’t. The blue light is on constantly
  18. A

    Worcester boiler blue light on

    Good morning everyone, I woke up to find the radiators unusually hot. Went to check the Worcester 30Si and the blue light was on even though no demand (fire symbol) was showing. The room temperature was well above the room thermostat (Honeywell, wired) setting. Hot water is fine. Tried...
  19. P

    Help needed! leaking isolation valve on Worcester Boiler

    So, got a lot of water leaking from my boiler. (Old Worcester 28CDI) Looking underneath it appears to be from the isolation valve (at the point where you close or open it) I've switched off my water supply, and turned off the heating for now as I'm about to go to bed. Question is, is this...
  20. R

    Worcester Boiler change to Combi

    Hi All, I'm looking into changing my conventional boiler (Worcester 30CDi conventional) to a Worcester Greenstar 8000 Style 30kW Combi. My house has 2 bathrooms/4 beds - showers (Aqualisa) in both bathrooms, but never likely to be on at the same time. Has anyone made the switch with these...
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