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junior

  1. K

    Unusual boiler trip 24i junior?

    I've got an issue with an ageing worcester 24i junior. It seems to run fine but often trips RCD just after using HW. I couldn't find an issue but checked and cleaned all contacts and checked terminations in socket and plug (it is a caravan if that makes a plug ok IDK?) It's definitely...
  2. M

    Advice on WB 28i junior

    I need some advice on whether to have the early model burner, 87181206190 replaced with the same part number Mk 5 type. I have my annual service due in a couple of weeks, and while booking it with the guy who did it last year, I remembered that he had commented about the burner being the old...
  3. M

    Low gas rate on Worcester Greenstar Junior 28i

    Hoping someone can give me advice with this one. At an annual gas service today I found a Worcester Greenstar Junior 28i to be using only running at around 12kW on high when carrying out the gas rate. The CO readings were where they should be, fan speed was okay and inlet working pressure was...
  4. M

    Worcester 28i junior fan running

    Hi all, My boiler is a Worcester 28i Junior and the fan switches itself on for no reason. The timer will be off and the hating may have been off for several hours but it does this intermittently throughout the day and night. We have noticed that our electricity bills are higher than normal and...
    • Matta691
    • Thread
    • junior running worcester
    • Replies: 1
    • Forum: UK Plumbers Forums
  5. W

    Worcester Junior 28i Faulty PCB Board

    I need some help with a Worcester Junior 28i gas boiler and I'm hoping someone here may have came across this fault before ... I have checked the following: 240v at supply connections All internal push on connections are correctly fitted to the PCB board The transformer is giving the correct...
  6. H

    Greenstar 28I Junior common/age related faults

    Hi. Looking for some advice. Recently had the flow adaptor fail on my Greenstar. Replaced it and all is good again but; judging by the reason it failed I am due for some more sh*tty plastic parts to let me down anytime soon. This thing and the internals of it were crumbling apart in your hand...
  7. MancAnt

    Bosch Worcester Junior 28I pressure loss

    Hi all, anyone give any advice regarding our Bosch Worcester Junior 28I .... I have to keep re pressuring it every two weeks ( drops to 0.6- I put it back upto 1.2 and then it drops after 2 weeks). Expansion vessel was re-pressured earlier this year by the installer . It is in warranty until the...
  8. I

    Worcester Junior 24i

    I have a worcester 24i boiler i have no room thermostat/programmer, i have to run up and down stairs to turn it on and off, i know i can get a mechanical programmer but i want a wireless units. Is there one for this boiler. Many thanks
  9. S

    10 year old Bosch Greenstar Junior water sloshing noise, then fault

    I noticed the boiler making some strange noises last night. It made the same noise previously during a severe winter several years ago when the condensate exhaust which runs into a sink waste outside froze. I checked the brass spiral filter and purged it and quite a lot of brown debris powder...
  10. M

    Bosch junior 28i pressure goes up and down. Advice please.

    Hi. After the issue, I've had recently and a visit from an engineer (full story below) I've got the following symptoms. On my boiler Bosch, junior 28i pressure goes all the way down to 0 bar when only hot water is in use but goes all the way up to 3 bar (and probably above) when central...
  11. J

    Common faults with a Worcester LPG Junior Combi Mk5.

    Hello. My son is having trouble with the above boiler. When operating the heating above 2 on the control, it locks out. A service engineer replaced the igniter and a sensor but the problem persisted until now. It will not work at all. Any help would be gratefully received. JJ.
  12. 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...
  13. J

    Worcester Greenstar 24i. Junior. Hot then cold.

    If the bath top shower is used by turning on the cold tap first, then the hot supply, it will give a consistent short shower, but that is getting shorter day by day before it goes cold. If the hot is turned on first, then the cold, that will result in domestic supply going cold within a few...
  14. J

    Greenstar junior 28i

    Guys help needed..... greenstar 28i junior...... I can hear it spark but burners don’t come on, then goes to ignition lockout....inlet pressure 22mbar it does not move at all when it’s sparking... gas valve resistance 390 ohms top solenoid 190 ohms bottom. In sparking voltage to gas valve 10vdc...
  15. Luke78

    Pre-Greenstar 28i Junior intermittent DHW

    Hello All- (Usual caveats apply: I am the rather unusual part-time variety of a GSRE, training self-funded and slowly trying to make my way and gain experience- mainly do inspections and safety checks etc, have been on the Baxi fault-finding course relatively recently, don't profess to know it...
  16. M

    Worcester Greenstar Junior 28i combi boiler - no green light or heating

    Hi all, First of all, I hope I have posted this in the correct place (apologies if not). I haven't used my boiler throughout the summer and have gone to turn the heating on. The hot water is fine and no problems but the green light does not come on my boiler and there is no heat. The blue...
    • mrsecm
    • Thread
    • boiler combi combi boiler greenstar heating junior worcester
    • Replies: 3
    • Forum: Boiler Advice Forum
  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. T

    Worcester Greenstar 28i Junior Issue

    Hi All, I just have woken up to no heating and no hot water, The bolier is Worcester Greenstart 28i Junior) on the first instance i have checked the pressure on the boiler which was a little bit below 1, i have topped up to a bit below 2, the bolier had solid blue light on it before and after...
  19. R

    1 inch of water lying in the top compartment of a Worcester Greenstar 28i junior

    Has anyone ever came across about an inch of water lying in the top compartment of a Worcester greenstar 28i junior. Was wondering if anyone knows the possible cause? Thanks.
  20. 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...

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