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Boiler issues

Discussion in 'Plumbing and Central Heating' started by monty9120, 19 Apr 2016.

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  1. monty9120

    monty9120

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    Hi all have a Worcester Bosch 28 junior boiler. A few weeks ago it started acting up the wireless thermostat called for heat but it fires and runs but the heat is only Luke warm through the pipes

    Reset the boiler and it's been fine for a few weeks

    This morning wore up to a freezing house. Checked the boiler was running and it was but again only Luke warm the firing light is on as well. Managed to get it working again but I feel it's problems to come

    I have renewed the batteries in the thermostat just in case

    Any ideas what normally goes wrong for this to happen
    There's no fault lights on the boiler
     
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  3. muggles

    muggles

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    Probably a stuck diverter valve, pretty sure it's made of plastic like most other parts on this sh!tbox - they tend to wear out
     
  4. St0rmer66

    St0rmer66

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    28i Junior doesn't have a diverter valve!
     
  5. Agile

    Agile

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    I find them very confusing.

    So which Junior has the plastic diverter valve at the right|?
     
  6. TCCHeating

    TCCHeating

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    Check your photos tony. I'm sure you will have taken a picture of the last one you worked on;)
     
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  7. Steelmasons

    Steelmasons

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    :ROFLMAO::ROFLMAO:
     
  8. St0rmer66

    St0rmer66

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    28i Junior is a standard efficiency combi with bithermal heat exchanger.
    "Greenstar" denotes that it's a condensing boiler with Worcester.
     
  9. St0rmer66

    St0rmer66

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    Particularly the PCB on this model. Melted APS is a common occurrence.
     
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  11. simond

    simond

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    Bithermic heat exchanger. No plate, no diverter valve.

    Now where have I heard that before? Surely that makes a boiler uber reliable?

    Unless it's a Worcester, right? This boiler will be at least 11 yrs old, bear that in mind.
     
  12. monty9120

    monty9120

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    the boilers just over 7 years old which makes it ancient apparently lol. fitted a new expansion vessel at the end of last year.

    it doesnt seem to have any issues with hot water though. is it common to get signal problems from the wireless stats
     
  13. sooey

    sooey

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    It makes it non compliant, unless you have a pretty unusual home. A lot of non compliant boilers were fitted back then in places they shouldn't have been, usually on the cheap.
     
  14. Agile

    Agile

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    Monty, your boiler is non condensing. Since April 2005 all boiler had to be condensing models.

    Either your boiler was second hand when fitted or it was old stock.

    Either way it was incorrect when fitted 7 years ago.

    I suspect they stopped making them about 2004 or earlier.

    Pretty silly calling both a non condensing boiler and a condensing one a "Worcester 28i Junior" !
     
  15. monty9120

    monty9120

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    I always thought a combi boiler was a condenser boiler which mine is

    Anyway any ideas
     
  16. monty9120

    monty9120

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    Can you please explain more please
     
  17. TCCHeating

    TCCHeating

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    They don't tony. They added the word greenstar for the condensing range.

    Is it silly that you can buy a vw golf. And also a vw golf gti?
     
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