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Robert Bosch GmbH (; German: [bɔʃ] (listen)), commonly known as Bosch, is a German multinational engineering and technology company headquartered in Gerlingen. The company was founded by Robert Bosch in Stuttgart in 1886. Bosch is 92% owned by Robert Bosch Stiftung, a charitable institution.Bosch's core operating areas are spread across four business sectors: mobility (hardware and software), consumer goods (including household appliances and power tools), industrial technology (including drive and control) and energy and building technology.

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  1. J

    Worcester Bosch 30Si new room thermostat install

    I've got a Worcester Bosch Greenstar 30Si combi boiler and I'm trying to replace the room thermostat which has a faulty display. The faulty thermostat is a DT10RF optimiser which is discontinued so I purchased a Comfort 2 RF which is supposed to be the equivalent replacement. It should be a...
    • JasonC
    • Thread
    • bosch worcester worcester bosch
    • Replies: 1
    • Forum: DIY Plumbing Forum
  2. grumpydad

    Baxi 836 Vs Worcester Bosch 8000 35kw

    Hi all. My glowworm e50 has seen better days. Situation = 4 bedroom detached house, header tanks in the loft, all the rads are singles, they are all the originals from 1996. No TRVS. Some are rusted on the bottoms. Vented heat only. Essentially, it's time to spend some money. Got two...
  3. P

    Intermittent Hot water issue with Worcester Bosch Greenstar 35 CDI

    I have a 16 year-old Worcester Bosch Greenstar 35 CDi combi boiler, which is recently suffering from intermittent issues with the hot water. I usually get the shout from a family member who’s in the shower and found there’s no hot water. If I’m near the boiler when this happens, I can see the...
  4. 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...
  5. I

    Cost to repairing a leaking Worcester Bosch Combi Boiler flow turbine

    Hi there - could someone please tell me what is a reasonable price to pay for a plumber to repair a leaking Worcester Bosch combi boiler flow turbine, pls? Ta!
  6. A

    Worcester Bosch Greenstar 30 CDi - Pressure loss

    Hi all, Recently moved into a new house and noticed the Greenstar boiler has low pressure on the dial. Quick Google suggests using a key, valves, or fill loop to increase the pressure. Only problem being is I don't have either of those things. Any help would be appreciated. Cheers.
  7. Jpm757

    Worcester Bosch Cycling Issue

    Good afternoon everyone, I am hoping you may be able to help me. I have a Worcester Bosch 19/24CBI boiler and it keeps cycling. When trying to heat the hot water (same for heating) the boiler is off more than it is on and thus unless timed for a very long time never gets the desired outcome. In...
  8. L

    How do I fit Bosch thermostatic valves to old radiators .

    background: I have 15 radiators 20+ years old with no thermostatic valves and Bosch instructions depend on replacing the actuator part only of old thermostatic valves. Surely there is an option for new complete valve replacing? Tom
  9. J

    Adding solar thermal to existing bosch combi idea.

    Hello, So I want to add a solar thermal system to my existing Worcester bosch greenstar but don't want to lose the functional benefits of the combi boiler. I'm proposing to install the solar collector on the side of the house in a position that will enable gravity flow to a 200litre tank just...
    • Jonnyo
    • Thread
    • bosch combi existing solar thermal
    • Replies: 8
    • Forum: Renewables
  10. wateece

    Worsted Bosch Green Star 24i won't fire

    Evening We have a Worcester Bosch Green Star 24i that keeps cycling on start up, makes some strange noises the inhibition light turns off and then it starts again until eventually lockout and reset. Reset does nothing but restart the process. Pressure is above 1 bar and in the green. It's been...
  11. L

    Worcester Bosch FS 30 CDI not coming on demand for heat

    HI All, Weird problem with an FS30 CDI, The boiler does not come on when demand for heat (LR terminal) is on, but I can turn it on manually via the service menu. Heating controls all seem fine, but anyone seen an issue before where it doesn't seem to register the demand for heat and just stays...
  12. B

    Worcester Bosch Greenstar 24i Pump Speed

    Can anyone tell me if the greenstar 24i circulating pump modulates? i have been looking at param 2.1c which references settings 0 to 4, i know the factory default setting is 4 (constant high pressure) which to me implies that it would not modulate on this setting, does it need to be setting 0 to...
  13. moonlight

    Worcester Bosch Fault code P3

    A customer rang this morning, says they have a intermittent fault on the boiler P3. Its a Worcester CDI30 I think from a past visit. I did quote for a new boiler 10 months ago, but the old one is still hanging in there. I looked on line as I don't have the book with me. Any suggestions? He says...
  14. M

    New Worcester Bosch startup whooshing sound

    Hi We just had a WB Greenstar 8000 Life 30kW System installed in the loft, and every morning when the heating comes on, the very first thing the boiler does is emit a loud whooshing of water away from the boiler, which results in what sounds like a bucket of water being chucked into the...
    • MikeNewman
    • Thread
    • bosch noise sound worcester worcester bosch
    • Replies: 3
    • Forum: Central Heating Forum
  15. J

    Hot water from Worcester Bosch Greenstar30i combi

    I have a newly installed Worcester Bosch greenstar 30i combi boiler. When i have the downstairs hot tap fully open, the upstairs hot water bath tap has very little flow. Is this a boiler problem, or is it down to the water pipe configuration, ie the downstairs tap is the easiest path for the hot...
    • Jaybrian
    • Thread
    • america bosch combi hot hot water usa water worcester worcester bosch
    • Replies: 2
    • Forum: USA
  16. S

    Why is my Worcester Bosch 24i making this noise?

    Hello All. I have a Worcester Bosch 24i RSF (NG) that until recently has been working ok (not superb, but does it’s job). What is happening is there is a noise that I can only describe (through my years of working on cars) as, as if it is boiling and knocking maybe “kettling”. This is...
    • Scott Hanks
    • Thread
    • 24i bosch kettling making noise worcester worcester bosch
    • Replies: 1
    • Forum: Central Heating Forum
  17. T

    Bosch dishwasher: no water entering but can hear a quiet motor

    Can’t find the model but this Bosch dishwasher is at least 10 maybe 15 years old. During the first wash for months yesterday it failed to finish, with a rather rough motor sound continuing until I eventually switched off power. It was clearly near the end, but it seemed that the final rinse had...
    • terrypin
    • Thread
    • america bosch dishwasher motor no water quiet usa water
    • Replies: 2
    • Forum: USA
  18. D

    Regular boiler replaced with Bosch 25i system

    Quick question - our old regular boiler was just replaced after it failed. They installed a new Bosch 25i system boiler instead. I don’t really understand the details, but they say they fed it from the attic tank and so I should ignore the fact the pressure gauge is at 0. I think it is designed...
    • David B
    • Thread
    • boiler bosch regular replaced system
    • Replies: 12
    • Forum: Central Heating Forum
  19. S

    How to check water psi on a Worcester Bosch Greenstar 8000 Life 40c ?

    How do you check the water pressure on a Worcester Bosch Greenstar 8000 Life 40c? I've searched online but cannot find any help on our boiler
    • Shajin
    • Thread
    • bosch check greenstar help water worcester worcester bosch
    • Replies: 1
    • Forum: Central Heating Forum
  20. F

    Anybody have experience with the Bosch 18v 10 litre wet vac.

    My Parkside wet vac has sh_t itself .20v battery is sound but motor seized.Is anybody familar with the 18v Bosch 10 litre?
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