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  1. Dan

    When did BOSCH buy Worcester out?

    When did BOSCH buy Worcester out?
  2. Dan

    Welcome to the new Worcester BOSCH Boiler Forums

    Welcome to the new Worcester BOSCH Boiler Forums. Post a new thread or question in this forum if you have any questions about Worcester BOSCH boilers.
  3. S

    Worcester Bosch Heatslave 20/25 Hot Water Not Working

    Hey there, I have a boiler (Heatslave 20/25) that had low pressure. I topped the pressure back up to 1 bar using the external filling pipe but the heating still won't come on. Do I need to reset anything? Thanks for any help
  4. M

    Opinions Re: Worcester Bosch Greenstar 30i Combi

    Hi, would welcome some advice/opinions please. I currently have a Remeha Avanta plus 28c (combi) which is 11 years old, still working in a fashion but beyond economic repair. I have the opportunity to have a Worcester Bosch Greenstar 30i (Combi) installed using the boiler grant scheme...
  5. G

    Worcester Bosch Greenstar 24i Junior cuts out during use with reset button flashing red

    Hi So this morning I was having a shower and suddenly my hot water went completely cold. I jumped out and had a look at my boiler. I noticed that the burner had stopped and the reset button was flashing red. The blue oval shaped light in the middle was on and stable (it was blue). I reset the...
  6. T

    Advice please about fitting mixer shower from Worcester Bosch 25/ 32 heatslave oil combi

    Hello everyone. Looking for comments/advice please about my wife's latest request... Which is to remove the existing bath from an upstairs bathroom (apparently we don't like it anymore!) and replace it with a shower. The hot water is from an external oil combi also feeding a second bathroom...
  7. I

    Bosch EasyControl CT200

    Hey all, Ive a Greenstar 30i combi, looking to upgrade my current wireless thermostat to a easy control ct200. which adapter do I require to fit the boiler to control wireless function? TIA
  8. R

    Worcester Bosch wires melting

    Hi about an hour ago all the lights in my house tripped out. I went to the fuseboard and one switch was down. Flicked it back and it tripped out immediately. few moments later theres and acrid smell and a little smoke in the room tracked the smell down to the boiler, took the cover off and...
  9. M

    worchester bosch 34cdi

    Hi I have a Worchester bosch 34cdi 3 years old recently started to loss pressure associated with water running from the condensing pipe every 15 minuets I/2 a tea cup and i know this because it had a lift pump which i noticed was pumping all the time removed the pump placed a bucked under pipe...
  10. centralheatking

    Bosch PKS 16 Circular Saw well worth a look

    I would never review a tool on here unless its well tried and tested. So This Bosch mini circular saw which will cut wood, mdf etc with one blade and tiles ..and concrete ! with the other blade. I have had it about a year now and I really abuse this stuff ...used it almost everyday so not DIY at...
  11. J

    Worcester Bosch Greenstar Combi Anti Cycling

    Acquaintance has problem with a 5 radiator zoned system which takes ages to heat up. The boiler (don't know output) fires up normally and after ~ 20 minutes reaches its setpoint of 65C, over the next few minutes it will creep up to 70C and then cut out, again fairly normal if min boiler output...
  12. J

    Worcester Bosch combi - HW suddenly runs cold for a few seconds

    Hi - I've searched the existing threads but not found an answer... I've just had a new W-B combi installed and it's excellent. But the question is about what's "normal". My wife and I both take a shower each morning, one after the other, and the shower is turned off for 10-15 seconds while...
  13. G

    Worcester bosch 42cdi

    HUMING through pipes when boiler not on programed to be on 42cdi switched to eco runs heating and hot water all day ok at night after heating switches off we can hear the HUM through the pipes iv looked at boiler with no burner light on but I think pump is still running any help
  14. D

    Worcester Bosch greenstar 30si locking out

    Having problems with this boiler with the hot water running for about 5 mins it locks out .then after a while I try it again it works for another 5- 10 min then locks out again CH is ok , I’ve done usual checks the gas valves ok and the amount of pressure is there is fine ,and ohms is about...
  15. N

    Will a combi boiler be adequate for my house?

    We recently moved into a new home that currently has a Super Hot MG-100 Hydronic Boiler (installed in 1986, when the house was built). Clearly, the boiler is way past its life expectancy and in need of replacement. We had a couple of boiler companies come give us a quote and one of them...
  16. L

    worcester bosch W11 water heater

    Hi am looking for some help with a water heater that has been driving me crazy. I fitted the Worcester Bosch W11 in a caravan around about a year ago, after fitting this boiler I was having problems with the boiler shutting down occasionally when hot water was flowing so i changed the flow...
  17. C

    Worcester bosch greenstar 28i Junior no HW

    I have a worcester greenstar 28i junior boiler in my flat, its about 7 years old and has never put a foot wrong apart from losing a bit of pressure over the course of the week. I've moved out of the flat and its been empty for about 8 months, boiler unused. Tried the Hot water at the taps today...
  18. J

    Bosch CDI 30 combi boiler

    Hi, my boiler has been having an intermittent fault no one can seem to cure. When the hot tap is used , usually first time in the morning, it creates the boiler to over heat. I have to wait for it to reset itself and cool down then usually ok. Apparently not heat exchange plate.
  19. K

    Worcester Bosch Heatslave Green star 18/25 continuously locks out

    Since moving to our property in Dec 2017, the Worcester Bosch Greenstar 18/25 Heatslave, has had a recurring lockout problem, which 3 OFTEC engineers have not been able to diagnose/ resolve. Typically at night when on manual,with no hot water running and with NO HOT WATER demanded of it. The...
  20. G

    worcester bosch heatslave 15/19 oil baffle arrangement

    I didnt remove them, but when I went to replace them,they are kind of flat with trianglar shapes on them they seem to sit right in front of the flame. The handbook gives the order that they go in but Im sure they are supposed to be above the blast tube and not in direct line of fire. Ive just...
  21. D

    What is this error code on Bosch combi boiler?

    I've been having problems with my boiler since I moved house. Today my Hive thermostat was offline, then it recovered but after that my boiler's central heating had problems starting. I've reset the boiler AND turned it off/ on and despite that I am getting the above error - which I cannot even...
  22. C

    Nightmare time with Worcester Bosch repairs

    Hi Was wandering if anyone can tell me if a competent boiler repair man should be able to detect a leak on an isolation valve to the boiler fairly easily. Worcester Bosch repair men came out 10 weeks ago to repair what was a leaking left flow unit. They also took boiler apart and replaced a few...
  23. C

    Worcester bosch and Nest

    I had a new Worcester bosch oil boiler fitted a short while ago and then had a Nest thermostat fitted by a proper electrician and also put the app on my phone. I'm still a bit mystified how Nest operates.....sometimes it shows pre heating but even when it shows "heating in 1+ hrs" etc, it...
  24. 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...
  25. 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...
  26. 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...
  27. 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...
  28. 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...
  29. 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
  30. S

    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...
  31. 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...
  32. D

    Bosch Smart Radiator Thermostats

    im thinking of having a Bosch combi boiler installed with a Bosch ct200 EasyControl smart thermostat, do you have to buy a Bosch Smart Home controller as well to work Bosch smart home radiator thermostat’s on the same system ?
  33. 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...
  34. 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...
  35. 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...
  36. 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
  37. 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...
  38. D

    Worcester Bosch35CDI Mk2 Room thermostat

    I have a remote/wireless room stat for the above boiler. Granted it's a few years old but still working. Anyway the stats info sometimes disappears and when I push the battery compartment up it sometimes comes back to life. After taking the batteries out and prising the terminations out it...
  39. 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...
  40. 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...
  41. 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...
  42. H

    Advice needed on Bosch Greenstar 30si

    The boiler has decided to chuck a wobbly today. If any of you kind people know a bit about boilers and heating systems I'd be grateful for a bit of advice. It's a Worcester-Bosch Greenstar 30si (gas combi). It has been working fine up until just before lunch when I turned on the hot tap, the...
  43. NeuroticNikki

    Bosch SKT5102GB/09 Intake Hose

    Good evening everyone! I am struggling with this countertop dishwasher I bought secondhand to help my husband, who is my full time carer. It’s an older model, 10 years apparently, and I was mislead when buying as the intake hose wasn’t supplied. When I looked on the Bosch spares website the...
  44. Michael Groves

    Worchester Bosch error code EA - Part 2

    I'm not sure why the moderator has blocked further posts to my last thread but I think if someone says something is dangerous and illegal it would be good for everyone to know why? Worchester Bosch 40cdi Error code EA So my question is what was dangerous, please be specific and what law has...
  45. Michael Groves

    Worchester Bosch 40cdi Error code EA

    I have a Worchester Bosch 40 CDi with error code EA. I've checked all the usual suspects but now I'm at a loss. I can hear the boiler clicking but it never fires up. Below is what I've tried so far; Clean condensate Replace electrodes (ionisation really worn) Replace ignition lead (rubber...
  46. G

    Clock not working on Worcester Bosch MT10RF/mechanical RF thermostat

    Hello The clock has stopped working on my Worcester Bosch MT10RF/mechanical RF thermostat. I have changed the batteries but the clock still does not work. There is a radio link with the boiler as the light is green. And I can switch the heating on by just using the bottom left hand switch to...
  47. T

    worcester bosch 350 programmer

    Hi guys. For those of us that are still involved in one way or another with these combis, heres a workround if youve got a timer/programmer that has a flat battery. The problem with a flat battery is as you know in the event of a power disconection the programmer losses its settings and...
  48. R

    Worcester Bosch heating not staying on

    I have the WB green Star 24i with a manual timer. We only have it set on/off and not use the timer, the issue we have is that it runs fine but when the heating switched off it doesn't come back on. The only way is to push the on switch on the timer upwards from the on position and it fires up...
  49. T

    Worcester Bosch combi timer issue

    I have a WB combi boiler. We never use the timer which is the mechanical type on the lower front of the boiler but have it set to constant and use room sat to turn it on and off when required. This method of use suits us well. I noticed recently that the constant setting has stopped working and...
  50. J

    Worcester Bosch 30i Combi boiler HW problem!

    Hi, New to the forum so sorry to jump straight in with a question...but I have Worcester Bosch combi 30 boiler with a hot water issue and I need some help! I recently purchased a house and the boiler is a Bosch Combi 30. It is relatively new (approx 3/4 years) but is out of warranty. After...