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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. C

    Worcester Bosch Heatslave 26/32 (Oil boiler 2007) Flue perished

    Oily smell from boiler recently before failed. Great plumber sorted though when opened external baffle at front of sealed flue the internal spring like tube lining outer insulation had all perished. Barn conversion with thick walls (763mm). Worcester Bosch say Flue Kits are obsolete and...
  2. L

    Worcester Bosch Heatslave Boiler pressure issue... any thoughts...?

    Greetings. I have an external Worcester Bosch Heatslave boiler and have a question about pressure. The boiler pressure was set to 1.5 during a recent visit by a plumber (as it seemed to have dropped and was hovering between the green and red zone) . A few days later I turned the thermostat down...
  3. L

    Worcester Bosch Heatslave Boiler pressure issue...

    Greetings. I have an external Worcester Bosch Heatslave boiler and have a question about pressure. The boiler pressure was set to 1.5 during a recent visit by a plumber (as it seemed to have dropped and was hovering between the green and red zone) . A few days later I turned the thermostat down...
  4. A

    Worcester Bosch help

    I have a greenstar 35cdi combi boiler that when the thermostat calls for heat. It will fire up heat to temp and then drop down to 41* on the boiler display and then kick back in again. I have checked all wiring and the zone valves. What else could it be? anyone seen this before
  5. J

    Bosch Condens 4700IW 24S

    Is the minimum output of this boiler 8.1kw, (max output 24.0kw), I don't see anything in the MIs re this, one would expect a turndown ratio of more than 3:1, surely? Also what is the relationship of Bosch and Wocester Bosch?, they only mention Bosch in the manual.
  6. T

    Worcester Bosch Greenstar knocking noise

    Hello, I have just moved in to a new flat this week and have a problem with noise coming from somewhere around the top of the boiler. It's a loud clicking/knocking sound that lasts about a minute, stops for 20-30 seconds and starts again. It seems to happen at night, starting in the evening...
  7. S

    Down-founded what to do

    Hey guys in the know. I have paid for a heating and plumbing contract and had to pay my excess 3 times for the same thing still not fixed. The issue is quite simple to repair not sure why any one of the 2 plumbers could not fix it. Why am I paying for cover. The auto air vents in part of the...
  8. D

    Main Eco Compact vs Worcester Bosch 1000

    hi everyone a local installer has recently quoted me £3,660 for a complete install using the main eco compact 25kw boiler i have also been waiting for more feedback and reviews of the new worcester bosch 1000 which seems to be getting quite positive initial feedback, and a few criticisms which...
    • Deleted member 131795
    • Thread
    • bosch main worcester worcester bosch
    • Replies: 24
    • Forum: Central Heating Forum
  9. J

    Bosch sounds like a washing machine

    My recently installed Bosch is sounding like a washing machine. It started 4 days ago and goes through this cycle for 35mins twice a day. Using the shower in the morning usually kicks it off. Engineer’s coming in 2hrs but he doesn’t know what it could be from the video so I don’t have much...
  10. D

    Worcester Bosch Magnetic Filter Running Water Noise

    Just had a new Worcester Bosch Greenstar 30Ri fitted with the magnetic filter. When the system is running the boiler is so quiet but there is a sound of trickling water through the filter, loud enough to hear quite clearly and is pretty annoying. I wouldn't of thought trapped air would sound...
  11. M

    Bosch washing machine cold fill

    My new Bosch cold fills in 5 goes each time at the start, some short and some long. Is his normal? Any ideas on a sort of 'normal' time to fill?
  12. H

    Does Worcester Bosch 40cdi 2013 boiler support weather comp?

    Hi there, thanks for looking at this post. I've got a WB 40cdi heat only boiler which was installed around 2013. I've attached the model number. I'm trying to work out if there is a weather compensation feature which will automatically adjust the flow temperature down on warmer days? I don't...
  13. B

    Worcester Bosch Greenstart 36 cdi filter installation

    Hello all. During a recent service to a Worcester Bosch Greenstar 36 cdi compact boiler within my property, a filter was removed by the plumber. (see photo). I was told it was easy enough to purchase a new one and reinstall myself. Despite a search I can't find a replica filter anywhere. Is...
  14. M

    Honeywell Evohome with Worcester Bosch Greenstar System Boiler

    I need a little help if possible as I am trying to check that my current system is running efficiently but not really sure how to check, sorry if this is a long one and I have tried to contact a Honeywell connected specialist but they dont seem interested unless installing a new system and the...
  15. chris skeats

    URGENT Hi I am thinking to replace my ageing Alpha CD24R with a Bosch

    Hi I am thinking to replace my ageing Alpha CD24R with a Bosch equivalent, I have a few quotes which seemed fair, until today we had a company turned up, he really had a good look round. Far longer than the others, (one i had to send pictures ? And he quoted me the pics that I supplied?) He...
  16. D

    Worcester Bosch 542/i - failed sweep test on electrode plate?

    Hi I've just had my annual maintenance check on my boiler (in title), it will be 8 years old in May this year and is (I think) still under guarantee as I get it checked annually with British Gas (they installed it and said the guarantee would be extended until it is 10yr old if I kept the annual...
  17. J

    Worcester Bosch 24SBi

    The flow loop connector is leaking but is now obsolete. I ordered last one available and it has gone missing in transit. Any ideas or possibly a secondhand one?
  18. C

    Veisman or Worcester Bosch Boiler

    Hi guys, just after a little advice please. I must be very fortunate, as I have a 28 year old Valiant VCW-GB242-EH Combi Boiler, which over the 28 years has only had minor leaks caused by the odd gasket and rubber diaphragm replacement...Fingers crossed. I do however realise that the party may...
  19. P

    Mystery Worcester Bosch Combi Status Code 265.

    Can anyone please explain why my 12 month old WB Greenstar 28CDi Compact ErP Combi with fascia mounted Comfort ll room stat continually stalls with a 265 Status Code "Stand-by mode forced due to energy transfer limit", causing it to take twice as long to reach the set room temperature than it...
  20. P

    Bosch EasyControl & autobalance

    Hi, 1st question from a newbie. I've had a search & can't find a thread on this. I have a worcester bosch greenstar boiler with 17 rads. I have a EasyControl with 14 of the rads having Bosch eTRVS. I do not use the weather compensation settings. I have a couple of queries if anyone has set up a...
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