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  1. J

    Weather Compensator - Greenstar CDi condensing boiler

    Hi, I have a Worcester 30 CDi boiler running on natural gas and would like to know if a weather compensator can be retro-fitted to the boiler. I have contacted Worcester Bosch and the technical guys there say that they do not have anything that will be able to assist in this problem and would...
  2. Kewat66

    Worcester Greenstar Highflow 440 intermittent hot water

    Hi All, Anyone come across this problem on the Highflow 440. Customer calls and says hot water not working. Sometimes only comes on with heating. I pop out to take a look and all working fine. New call 3 weeks later same problem. Again pop out but when I get there reset boiler and working fine...
  3. A

    WB Greenstar 37cdi fan runs constantly

    My 37cdi is in holiday mode and Eco mode, with all temp settings at minimum. However the fan ,or something, seems to be running continuously. The only way to stop this is to switch the boiler off. I do need hot water occasionally and I leave it switched on for this reason. What is running?
  4. D

    Hot water problem Greenstar 28i junior

    Having a few issues with shower going cold. It is ok early morning before 7am but after this time goes cold after a few mins. Would this be the heat exchanger or something else. Water pressure is weaker later in the day so wondering if this is the issue. Thanks
    • Deleted member 99291
    • Thread
    • greenstar hot water junior water
    • Replies: 11
    • Forum: Bathroom Advice
  5. 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...
  6. S

    Greenstar 24i blue and red flashing lights

    Hi We have a greenstar 24i system boiler which is feeding an unvented cylinder Since we moved into the hour 3 years ago - we have had an intermittent issue of the boiler stopping and showing flashing lights. It seems totally random. Pressing the reset has always worked and can last for days or...
  7. S

    Bristol - Connecting NEST thermostat to worcester greenstar / thermal store

    Hi I'm looking for a plumber able to connect the gas boiler to the thermostat, thermal store and valves. Our previous plumber said it was the electricians job & left. The electrician said it was the plumbers. We have all the bits, just not connected. BS6 Bristol. Pm me for my mobile Ta, Stephen.
  8. Ted808

    greenstar 24RI .ap hose insecure

    Hey Guys do you come across this often? I've had it twice now and not sure why it's happening. I found it on a service /inspection of the boiler, which is still working fine- which is the puzzling bit. Any clues and what a pain to try top replace, as you can't get to the AP hose connection...
  9. 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...
  10. 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...
  11. P

    Worcester Boch Greenstar Ri 24kw control upgrade

    Hi all, checking on the WB website, it appears to suggest that the Greenstar Ri is not suitable for an upgrade of controls to intelligent/web based..... or is it simply that there are no WB intelligent/web based controls available? In other words, can Hive/Nest etc be used with this boiler -...
  12. P

    Greenstar 24RI water leaking out of boiler

    hello, a problem today with a greenstar 24ri heat only boiler. Woke up to no heating or hot water, the boiler had locked out and water was pouring out from inside the casing. Removed boiler cover and water was leaking from top of heat exchanger, air/gas manifold and fan. The condensate siphon...
    • phillyshaw
    • Thread
    • boiler greenstar leaking water
    • Replies: 1
    • Forum: Boilers
  13. T

    WB Greenstar 30si Leaking

    Hi All Nipped over from the tilers forum but as you can read, my boiler is leaking. It is a pinhole coming from the plastic flow unit and I was wondering if this was going to be expensive to repair if it can be fixed at all. Any help would be most grateful.
  14. S

    Worcester Bosch Greenstar 18Ri Frost protection

    Hi, I have a Worcester Bosch Greenstar 18Ri regular boiler installed within my garage. There is also a Honeywell T4360 Frost Thermostat installed just above and to the left of the boiler. The problem I was having was that the Frost Thermostat was kicking in in cold weather and firing up the...
  15. quality

    Worcester Greenstar Ri .

    Hi folks I had a call to go and look at one of these which is apparently leaking water when its used and not when its turned off. Could anyone give me a heads ups before I go and look tomorrow. All I know is that its open vent s plan thanks in advance
  16. cr0ft

    Spillage on inside of case (Worcester Greenstar 24i System, 2001)

    Went to this boiler today to service for the first time and found black spillage marks all over the inside of the outer case (mostly inside the airbox seal area but not all, some are clearly visible outside the seal). Noticed there is a case screw missing on bottom left so am going to replace...
  17. Gas74

    Greenstar 40cdi conventional

    anyone know what it means when there is an L (inverted)flashing in top left and bottom right of display alternating between that and flow temp. Boiler will not fire onto full rate either so poor/ no heating/hw. Can’t find any info on this Help appreciated.
  18. moonlight

    Worcester greenstar 24i

    Usual visit to my boilers not working. I am not sure where to start. Anyway I have power to the boiler from the fused switch. Blown fuse. Replaced. Turn power back on pop goes the fuse. Can't test past the fuse as it blows instantly. Is this the transformer or a board issue? Thanks in advance...
  19. G

    Greenstar Ri wont start up ?? Advice please

    Hi guys Im wondering if anyone can help. Ive done some work on a house for my son, and the gas and water have been off for a while but the works done now and the boiler wont fire up. We ve never seen it working but it was a rented house before so i assume it would have been working then but obv...
  20. G

    greenstar 35cdi problems

    Boiler had an F0 fault code which turned out to be the pcb. However after changing the pcb which came with the wiring loom it will now not do anything. Display is d3 and the blue led is flashing. Any ideas? Found on line info was Terminals 8-9 not detected at connector ST7. This pcb has no ST7...
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