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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. S

    Worcester boiler condensate won't drain.

    Good afternoon all, I have a Worcester boiler installed recently. It was moved from the first floor to the loft. Existing 22mm condense pipe was extended to the loft. It looks like the old pipe has no slope and prevents air to get into the boiler condensate trap, preventing condensate to drain...
    • Steve2
    • Thread
    • america boiler condensate drain usa won't worcester worcester boiler
    • Replies: 2
    • Forum: USA
  2. M

    Worcester boiler part leaking

    Hello this part of my Worcester boiler seems to have a leak and boiler pressure has gone up? Any ideas what this part is?
  3. J

    Worcester boiler pressure issue

    I have a Worcester Greenstar 24i junior boiler that is around 12 years old. I am having issues with the pressure on the central heating. When the boiler is off the pressure is dropping down to 0 (I know it should be around 1 bar). When on it is around 1 bar some of the time, but it can go up to...
    • jon1974
    • Thread
    • america boiler issue pressure usa worcester worcester boiler
    • Replies: 4
    • Forum: USA
  4. S

    Getting a Remote Control RFWRT thermostat talking to a Worcester Boiler 28i

    Getting a Remote Control RFWRT thermostat talking to a Worcester Boiler 28i, changed the batteries, no heating, hot water working ?
    • Steve Green
    • Thread
    • america boiler central heating system control getting hot hot water no heating remote talking thermostat usa water worcester worcester boiler
    • Replies: 1
    • Forum: USA
  5. M

    Worcester fan replaced, pressure now dropped / air in pipes / constant need to top up

    Hi, We recently had a Worcester compact system boiler repaired under warranty where the fan had failed. Since this has happened, the top floor radiator has needed bleeding constantly and additional water added to the heating loop. There's no apparent leak. I'm guessing the boiler is releasing...
    • Marcusblanc
    • Thread
    • air america boiler boiler fan constant dropped fan pipes pressure replaced top usa worcester worcester boiler
    • Replies: 1
    • Forum: USA
  6. D

    Worcester boiler with wireless thermostat

    son has had Worcester style installed and has Easy Control RF thermostat, table tennis stand and Worcester Bosch easy control wireless key for bottom of boiler. Does he need internet connection in house to work thermostat or should it pick up wireless key? I'm h
    • Deano
    • Thread
    • america boiler control easy plumbers question thermostat usa wireless worcester worcester boiler
    • Replies: 1
    • Forum: USA
  7. hammers4spanner

    Fitting a worcester 2000 boiler

    Fitted one of these today and was a bit flumoxed on the valve set up where they connect onto the boiler. In a nutshell i couldnt fit a spanner in to tighten them up enough and the prv connection seemed utter pita. They electric supply isnt long enough either for what i needed and you cant...
  8. S

    Worcester boiler not working and flashing 'EA' error code

    My Worcester Greenstar 29 CDI boiler made a loud bang earlier today, and has now stopped working. It is flashing the 'EA' error code, which according to the manual, means no flame is being detected. I tried resetting the boiler a couple of times but upon doing so, it just makes an extremely...
  9. M

    Worcester boiler droning/rumbling noise

    We've been pleased with our Worcester 36cdi installed in 2013. Over the past few years we noticed a low droning or rumbling noise which gradually increased to the extent that it woke us up in the mornings and pervaded the house whenever the heating was on. Worcester were very helpful and sent...
  10. S

    Worcester boiler / heating noises on shutdown

    hi all, We've got a Worcester 24ri boiler - installed around 3 years ago. When heating the house up from cold / to a higher temperature (i.e. it's firing for longer) = no problem. However, say the house is at 21 degrees and it just drops below that, so the heating is fired up again - it...
  11. J

    Losing pressure on a new worcester boiler, but there have been times it has been (temporarily) fixed

    Hi, I would love to get some expert thoughts on my pressure loss problem. I have just replaced my boiler and radiators to fix a raft of problems with the heating system mostly caused by old radiators filled with sludge. Unfortunately the loss of pressure hasn't been fixed. There are no signs of...
  12. S

    Boiler Noise On Worcester Boiler

    Hi folks, anyone know why our Worcester boiler is making this buzzing noise, it just seems to happen randomly and only goes when you physically turn the boiler off then on again, then it might not happen again for another 6/7 hours, sometimes sooner. Do I need a plumber to come look at it, or is...
  13. A

    Timer issue, Worcester boiler

    Hello everyone. I have a slight issue with the timer for my Worcester boiler and it has been like this for a while. It is set to start central heating every morning and afternoon and works fine with the exception of Monday morning - it doesn't come up. Assume it is something to do with the...
  14. A

    Heating timer issue, Worcester boiler

    Hello everyone. I have a slight issue with the timer for my Worcester boiler and it has been like this for a while. It is set to start central heating every morning and afternoon and works fine with the exception of Monday morning - it doesn't come up. Assume it is something to do with the...
  15. J

    Worcester Boiler 4 months old

    Boiler fitted September 2017 along with 2 other same boilers in other properties. One is now giving us grieve. Pressure was in the green -1 bar- 3 radiators were not heating properly so they were bled and then of course the boiler needed topped up. This was done to 1.5 bar. Then when boiler...
  16. P

    Worcester Boiler Pump fault can cause faults with PCB?

    Hi all, hoping someone can help me, I have a Worcester boiler, I’m not sure which model but its gone faulty, I’ve had this issue a few times but only after the boiler has been turned off. In the past -once switched back on, it has seemed to sort itself out within a few days and then works fine...
  17. M

    Worcester boiler not heating radiators?

    Hello, I have attached a few photos of my central heating system, heating control and thermostat. I turn everything on and it all makes the usual noises and clicks, but the radiators seem completely dead. Could there be something that I am not doing? (I know that the thermostat in the photo is...
  18. K

    new worcester boiler advice

    hi i will soon be getting a new combi boiler installed. i think i would like a worcester 34cdi classic. my reasons for picking this model are i have a large cupboard so don't need a compact version. also my current boiler baxi genesis 80 has never supplied as much hot water as i would like when...
  19. D

    Worcester boiler pressure/leaking

    Hello. The pressure on my Worcester 24cdi boiler is at zero. When I try to raise pressure using the filling key, lots of excess water is pouring out of where the key is inserted and pressure is not increasing. Please could you advise if this is something that needs a plumber/engineer, or should...
  20. J

    Worcester Boiler making incredibly loud rumbling sound.

    As of last night, we have noticed our Worcester boiler (Greenstar 25si) is making an incredibly loud rumbling sound, like that of a tumble dryer or something. It still produces hot water and everything, but we are worried about this noise. We increased the pressure earlier, and the boiler was...
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