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worcester bosch

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

    New Worcester Bosch 24i boiler - are these normal noises?

    Have just had a new Worcester Bosch 24i boiler fitted. It heats up the house and the water lovely. However, the boiler is not very quiet when it's working. It makes a constant droning noise when it's on (not loud but loud enough to hear). As it is a brand new boiler I was expecting it to be...
    • Sprintmancolin
    • Thread
    • 24i boiler bosch installer noises normal oil these worcester worcester bosch working
    • Replies: 9
    • Forum: Plumbing Jobs | The Job-board
  2. B

    Worcester Bosch 40CDI - Bypass Circuit help required

    Hello, We've had this 40CDI boiler fitted in place of a Potterton boiler that failed after 16 years of service. The system is configured as an S plan as I would understand. We've got a fairly large house with 3 bed's and loft office. Total radiator count is 13, all have thermostatic valves...
  3. C

    Vokera boiler verses Worcester Bosch does modulation need to be below 7kw?

    I am looking at getting a Worcester Bosch 34cdi but some people are saying it is too big for a 3 bed roomed house. My concern is I have a large bath and I want the water to run off quickly, at least 12 to 14 liters per minute. I have the flow rate to support this. I have heard things about...
  4. P

    Knocking Worcester Bosch Greenstar Heatslave 18/25

    I have recently exchanged a failed boiler for the WB Greenstar Heatslve 18/25, which was basically a like for like swap. The failed boiler was the same model, albeit 10 years old. As the boiler stops burning there is a clunk/knock. Sometimes it's quiet, sometimes loud. The pipework was altered...
  5. W

    Worcester Bosch greenstar invoice needed

    Hi Guys, hope everybody had a merry Xmas? I need another work jacket an I'm too tight to shell out for one... I need a receipt for a worcester Bosch greenstar OIL boiler purchased from 22/7/13 to 31/12/13 so I can qualify for a free jacket. would anybody have a receipt knocking around, I only...
  6. J

    Worcester Bosch Greenstar Pressure Problems

    Hi, I have a Worcester Bosch Greenstar 24i boiler with strange pressure fluctuations. For the last couple of days I noticed that the pressure was reading zero in the morning when cold. I also noticed a slow drip coming out of the drain valve thanks to it only being hand tight. So, I assumed...
    • jsaipe
    • Thread
    • boiler bosch expansion greenstar pressure problems vessel worcester worcester bosch
    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
  7. R

    Problem - Worcester Bosch MT10rf thermostat

    Friends I've got a Worcester bosch green star 28i combi boiler and the control/remote thermostat has stopped working tonight. Tried a variety of batteries, put foil behind but its dead! Any thoughts? If I buy a new one I take it I need to buy a new receiver that fits on the front of the...
  8. S

    Worcester Bosch boiler problems

    I have a Worcester Bosch greenstar boiler,7 years old,with a mechanical m10 programmer and Honeywell thermostat,the problem is that the hot water is working fine but the heating which is always switched to the on position on the programmer and controlled by the thermostat is not coming on when...
  9. J

    Worcester Bosch Warranty and powerflushing microbore

    Hi there I am currently getting quotes to replace Swiftflow Gloworm Combi boiler in our rental property with either Worcester Bosch 25si or 30si. Have seen 3 Worcester Bosch Accredited Installers all offering diffferent advice to one extent or another. The current boiler is in airing cupboard...
  10. J

    worcester bosch fault codes

    got a fault on a worcester bosch heat slave 20/25, the code is 9f flashing on the screen. tried resetting the main one on the boiler, reset on the overheat stat and also on the burner, no avail. if anyone could point me in the right direction of some fault codes that would be excellent. cant...
  11. B

    Thank you Worcester Bosch

    A very cold wet morning yesterday. Turned up to service an external combi but it had been left on. Oh well, out with the big gloves and crack on. Finally realised what the padding on this chamber door is for though, beautifully warm dry soft seat: :-)
  12. T

    Worcester Bosch 25si boiler not heating radiators

    Hello everyone, If someone could take some time to advise me I would be grateful. I live in a small studio flat which has two radiators and a towel radiator in the bathroom. My boiler is a Worcester Bosch 25si boiler and from the looks of it, is quite old. However I have not had a problem with...
    • thejones
    • Thread
    • 25si boiler bosch central heating system not heating oil radiator radiators turned which worcester worcester bosch
    • Replies: 3
    • Forum: Plumbing Jobs | The Job-board
  13. G

    Worcester Bosch DT20RF Problems

    Hi, i've recently moved to a new property and i'm having issues with our DT20RF. It worked intermittently when we moved in but the other night it stopped working completely and the Wireless logo was flashing on the boiler. i followed the instructions to pair it with the boiler again not sure...
  14. D

    worcester bosch 35cdi no dhw

    have Worcester 35cdi no dhw, when water demanded flow and burner light come on then burner goes off on off then flow light starts flashing any ideas
  15. D

    worcester bosch 35cdi no dhw

    have Worcester 35cdi combi boiler no hot water,heating works, when dhw demanded flow and burner light come on then burner light goes off on off then flow light starts flashing any ideas
  16. A

    Help with Worcester Bosch Greenstar 30CDi

    My boiler model is Worcester 37 CDi Greenstar. The HW is running fine but my CH will not work. I have checked the thermostat is wirelessly connected and functioning. I have checked the pressure, it is at 1.5 Bar and in the green area. I have conducted several re-calibrations by pressing the...
  17. Y

    Vaillant Eco Tec Pro 28 Vs Worcester Bosch Cdi28

    HI all I have a very large house. 6 bedrooms, 2 bathrooms and serving 18 radiators. Currently have a Worcester Bosch Cdi28 which is 11 years old. Part of the green deal, been offered a Vaillant Eco Tec Pro 28 but looking at the reviews, this is only suggested for small houses. Will we be...
  18. P

    Worcester Bosch 30 Si crackly noise

    Hi, I wonder if anyone can help me with an issue that has arisen with my Worcester Bosch 30 Si boiler. A few days ago I drained the system to replace a faulty TRV, and with the boiler flow valve shut off I used the integrated filling loop to flush the system, then refilled with added inhibitor...
  19. P

    Worcester Bosch 280 rsf no ch operation

    Hello friends/ fellow tradesmen I have the above boiler in a landlords property that is working on dhw but not on heating. I have had a quick look and couldn't find the fault. I removed the stat and put a link in but still no operation. I also noticed the demand light was not illuminated but...
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