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junior

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  1. A

    Worcester 24i Junior Return Unit By-pass Valve

    Have had to replace the pressure relief valve - unfortunately, the way the boiler was installed (pipes not far enough back away from the heat exchanger) I had to remove the return unit to be able to access the valve. This is where things went a little awry... the by-pass valve (87161064340) fell...
  2. P

    Worcester 28i junior leaking from above pump

    Hi all. I don't do too many breakdowns and repairs so this one has me stumped. Not sure if it's a common problem but there is a leak coming from above the circulating pump down the right hand side of the pump. Is this a case of a perished o ring or gasket or is it something more? Any help...
  3. C

    Greenstar 24i junior

    Hi all can someone help me out. How exactly do I check the resistance on the solenoids of the gas valve I can't get my multimeter anywhere near the connections Thanks in advance
  4. sammathias

    Worcester 24i junior non condensing breakdown

    Called to a breakdown. Basically boiler locksout and flashes 4 times a second. Fans working getting 240, pumps getting 240, working but not really strong. Boiler lights and runs for a minute or so then I noticed the fan cuts out and burner flames come from under burner. Flues clear and cleaned...
  5. Peter J Brown

    Old Worcester Bosch 28i junior

    hi guys got phone call yesterday to go and look at a boiler fault, on arriving was informed that another company had been there three times in the last month. Was told that the first visit they checked all the electrical connections ie fan, air pressure switch and gas valve , the fellow said the...
  6. A

    Worcester Greenstar 24i Junior - Vibration

    This boiler is giving me headache literally :eek: the best way to explain it is when the CH is first switched and the boiler is giving its all its spot on, running almost silent! Give it about 30 minutes or so when all the rads are up to temperature it then starts to slow down and gives out...
  7. J

    junior 24i boilder 4 flashes a second

    junior 24i boilder. It produces a fault only when running hot water through a tap. The heating works fine every time. The hot water issue is intermittent and producess 4 flashes a seconds fault code. I replaced the PCB as the pump relay fried last year. The hot water fault was happening before...
  8. C

    Junior plumbing vacancy required

    Hello Im 18 and have just completed a 2 year couse at college in plumbing. I have my city & guilds qualification and am looking for a job in and around maidstone. Tonbridge ir tunbridge wells. Any assistance would be appreciated.
  9. V

    Worcester Junior 28i

    Hi everyone Called out to carry out a boiler service on a junior 28i picked up the seals before hand. Put the boiler on max before doing the service and stuck the probe in came out with a scary 1065ppm co and .0162 ratio. Gave the bad news to the customer and asked when they last had it...
  10. P

    Greenstar 28i Junior hot water question please.

    Could anyone please confirm, if this boiler has a preset for the hot water temp? This boiler has an owner adjuster for the CH but not for HW ( understand later models such as the 30i, had both ) If there is a preset adjuster, can anyone please tell me where to find it. Thank you, Pete.
  11. 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: Boilers
  12. Gasmk1

    worcester 24/28I junior gas valve

    does anyone want this gas valve never fitted just pay for postage or you can collect from warrington
  13. 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
  14. Scott_D

    WB junior full service

    I need to give one of these a proper service, it's not had one before and the FGA readings are getting high. Do I need anything more than Brush kit Burner gasket Electrodes
  15. 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...
  16. S

    Worcester Junior 28I Combi - On the way out?

    Hi All I have a Worcester Junior 28i combi Boiler. Recently it has been causing a few issues. For a while it was loosing pressure and i was having to top up (1/2 a week) This seems to have stopped now however. But not it has started to make a strange noise: After running hot water, then...
  17. D

    Worcester 28i Junior HW not hot enough

    Hi I've got an issue with my Worcester 28i Junior not heating the HW sufficiently. At best it is warm at the taps/shower and when I take the temp of the feed out of the boiler the pipe is reading 44 to 45 deg C The CH works fine. I've had various heating engineers saying its the diverter...
  18. spanner

    Worcester junior 28i (non condense)

    Hi guys weekends here again.. Got a junior 28i about 12 year old boiler The pressure is constantly topping up! With or without the filling loop key . The client has gone away until next week and not going to do any further work until they return and have left no number to contact whilst away...
  19. D

    Worcester 24i junior problem

    Hi guys need some help got a Worcester 24i junior pre condensing , I have no fault lights that come up, fan is permanently running if you blow down air pressure switch hose boiler will fire up , with demand from h/w or c/h turn off demand and then reintroduce demand boiler won't fire up till you...
  20. M

    worchester 24i junior

    ok . my clients boiler which is a worchester 24i junior orignally went there first found blown fuse on pcb , replaced but kept blowing change fuse disconnected leads of board still blown fuses ,board repaired now boiler lights then re-ignition of spark, burner still on , changed flame sensor...
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