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bosch

  1. M

    Worcester Bosch Controls

    I have a Greenstar Comfort 11 RF controller and I am trying to set the holiday function.The problem is, at the end of the setup procedure do I leave the controller in the OFF position or the Auto position? I ask this because if it's the OFF position one can't set it until your about to leave...
  2. david stanton

    worcs bosch 24i to 34/38i ?

    i've got a worc 24i at 9l which is about 5 years old, from reading specs the only difference on the 34/38i is the litres flow rate, i'm presuming this is just one part in there that makes the difference? Can a 24 be "converted" to a 34/38 with some swap of a part, so I can get a much better...
  3. P

    Worcester Bosch Greenstar 30 CDi Conventional Boiler

    Hi All, I have the above mentioned boiler linked to a Nest Thermostat. The problem I have is when the boiler is set to No.5 which heats the water to circa 67 degrees, it reaches temperature, the gas light goes out and it cools down to circa 30 degrees then heats back up again. This continues...
  4. B

    Short cycling Bosch Worcester 30CDi Greenstar - Bypass Valve?

    My first post, so apologies for any incorrect terminology I had a Bosch Worcester 30CDi Greenstar Classic Regular Boiler installed in 2014. The Boiler is used in a vented S-plan system, with two motorised valves, a manual Bypass Valve, a British Gas (Grundfos) Multi-head pump, Hot Water...
  5. N

    BOSCH RD 532i Pressure & Temp faults

    Hi all, I have a Bosch rd532i and recently it's started to develop various faults. It keeps overpressurising when not in use overnight, leave it on 1.2 bar and 12-14 hours later it's on 3-4bar. I have removed the pressure each time immediately though the relief valve. Secondly, when the...
  6. D

    Worcester Bosch 28i series 2 not heating radiators

    Hi, I have a microbore heating system with the above boiler, now 18 years old. recently, I had 3 radiators replaced and all worked fine for about 3 weeks. Now however most of radiators are only getting warm, some hardly at all. The pump is running and the whole system has been bled and topped up...
  7. Mikesaint

    Worcester Bosch Greenstar 12 Ri yellow cap

    Hi, anyone able to assist naming and tracking down a part for this boiler. It's between the 'mains cable inlet' and the condenser drain. It has a yellow plastic screw on cap which has split and is leaking. Seems a simple part to replace but I can name or find it on any parts site Thanks
  8. T

    Worcester Bosch Greenstar 24Ri LPG Leaking From Inside

    Hi I'm worrying about my wall-hung boiler which has leaked a couple of times from somewhere underneath the green on light. I believe this is to do with the syphon trap leaking condensate, can you suggest what it might be? Just my luck over Christmas !
  9. D

    Worcester Bosch Greenstar 30si LPG Thermostat

    Hi I have a 6 year old Worcester Bosch Greenstar 30si LPG Combi Boiler, currently I have a Honeywell T40 thermostat with the Brown Wire going to connector no 3 and Blue Wire going to connector no 1. I have bought a Honeywell Lyric T6 Smart Thermostat. There are 2 parts, first the Reciever Box...
    • Deleted member 103356
    • Thread
    • bosch greenstar thermostat worcester worcester bosch
    • Replies: 4
    • Forum: UK Plumbers Forums
  10. B

    Which Worcester Bosch Boiler For Our Home? Please Help!

    Hi All, We may need to replace our boiler - the OLDER version Worcester Bosch 35Cdi (see images attached) Our home is a 1920's Semi 5 Bedrooms 2 Bathrooms 5 x Large (1800mm) Double Panel Radiators 1 x Large (1800mm) Single Panel Radiator 3 x Medium (1400mm) Double Panel Radiators 2 x Short...
  11. R

    Worcester Bosch 30i for a 4 bed house?

    Hi all, I'm currently in the process of replacing my ageing potterton conventional boiler with a combi. We've had a couple of quotes but there's one company in particular who we're thinking of hiring to do the job. We have a 4 bedroom house with a single bathroom and 11 radiators. This...
    • rajan2004
    • Thread
    • bosch house worcester worcester bosch
    • Replies: 17
    • Forum: UK Plumbers Forums
  12. D

    Slow flow DHW from Worcester Bosch Greenstar 28i Junior Boiler

    Hi, I've got a 7 year old Worcester Bosch Greenstar 28i combi boiler, the dhw flow rate has gradually got slower over time and is now only about 4 litres a minute, the water is consistently hot all the time just slow flowing, all the hot water taps in the house run at the same pace, cold flow is...
    • Danman
    • Thread
    • boiler bosch flow greenstar junior worcester worcester bosch
    • Replies: 1
    • Forum: Boiler Advice Forum
  13. Michael Groves

    Worcester Bosch Greenstar Ri boiler short circuit

    I’m an electrician. I’ve been called to customer home to trace a short circuit. When I disconnect the boiler and put my meter across live and neutral I get 118 ohms. I called Worchesterbosch tech support and the guy said yes that’s normal, no hold on I’ll ask my mate. Then apparently said no...
  14. L

    Worcester Bosch Greenstar - No CH

    Hi Guys, Wondering if you could offer some advice, we have just bought our first house and we are having a nightmare with the CH. I will be having the full system replaced in the next 12 months (when we have the £'s), but for now, I am hoping to keep the old system going. We have a Worcester...
  15. R

    Worcester Bosch Heatslave 20/25 oil hose size

    Worcester Bosch Heatslave 20/25 oil hose need to pick one up from my local plumb merchants and hes asking what size connectors male female etc does anyone know the spec i require thanks
  16. M

    Worcester Bosch Guarantee

    Had a WB Greenstar 30 Si fitted end of July with installers invoice stating a 10 year guarantee. Have received an email from WB acknowledging registration of the products guarantee but absolutely no details of time span or terms and conditions. Can't seem to get any sense from their...
  17. M

    Long term noise levels Worcester Bosch 28CDi vs 30i

    Hi Choosing a new replacement Worcester Bosch combi boiler - both are about the same price. Anyone have experience of what the noise levels are like - the WB website says 52 decibels for the small one and 50 decibels for the larger - but what are they like in real life over the longer term...
  18. S

    Bosch greenstar junior 24i

    Hi guys, first post so go easy. We moved in to our house a year ago and only since few weeks ago our boiler had started to show 0 pressure so I decided to open the external loop and refil the boiler to 1.5 bar and it lasted that long for a few nights then we checked it and it went up to 3.5 so...
  19. A

    Bosch Danesmoor lockout problem

    Hello, after reading many posts on this site, have joined to post a question about my Danesmoor 20/25 oil utility boiler. For 2 winters we have had a problem where it goes to lockout during mild weather, (above about 5 Deg C), but is fine when colder. It may lockout 4 or 5 times a day, or just...
  20. T

    Help with Worcester Bosch Greenstar 24

    Hi All, I need a little advice. With the current weather the boiler at my girlfriends kept going into error mode last night and from what I can see the following has happened. The condenser out goes into a waste pipe with a U Bend, the said U bend then had the wasing machine waste pushed into...

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