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Worcester CDi 24 combi

Discussion in 'Plumbing and Central Heating' started by john306, 6 Sep 2021.

  1. john306

    john306

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    Mother in law called me saying when running the hot water tap/shower the radiators were heating up.
    Got there and pressure gauge reading zero so tried topping it up but reading didn't move.
    looked online as saw the end gets blocked and a video on how to remove/clean.

    I undone the white plastic hexagon drain nut but no water came out.
    Removed the retainer clip and pulled out the end of the pressure gauge and again no water came out. I cleaned the end up pushed a needle in to clear the opening out and replaced everything but still no reading on gauge which i suppose it to be expected given that there was no water in there to begin with.
    Question is why no water come out when trying to drain, is something blocked elsewhere and could that be related to her hot water/radiator issues?

    What would be her best option going forward, local repairer or direct with Worcester?
    The boiler is 20 years old but no previous issues at all.
    Thank you for any advice.
     
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  3. foxhole

    foxhole

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    Could be the filling valves have seized .
     
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  4. john306

    john306

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    There was definitely a sound of water flowing when I turned the filling knob on.
    Thanks.
     
  5. terryplumb

    terryplumb

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    Your diverter valve malfunctioning is the cause of the rads heating when hot water is running. Nothing to do with low pressure / gauge etc. They need sorting out too.You need an engineer .
     
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  6. john306

    john306

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    Thank you.
    That does seem to be the case, but reading about the challenge/cost of changing the diverter valve, coupled with the pressure valve problem and why there was no water when releasing the drain valve, would it be better to get a fixed cost Worcester repair or just a local engineer?
     
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  8. terryplumb

    terryplumb

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    Boiler is 20 years old ,maybe worth considering replacement. Bit like old cars ,once you start spending money on repairs it can be an ongoing saga.
    If you do decide to have it repaired you would be better off with a fixed price from Worcester
     
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  9. Gasguru

    Gasguru

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    By this age they often need the diverter, filling link assembly, auto air vent and expansion vessel...the isolating valves are notorious (you work with the system full of water and never use them as the spindle seals leak for fun and then it's another ballache). Very few boiler engs. will want to take on the job as it's rarely straightforward. See if Worcester will take it on, out of frustration they will often throw even more parts at them for an easy life.

    Last one I did....

     
  10. john306

    john306

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    Wow there's not a lot left there.
    I'll ring her later and ask what she wants doing.
    Just looked at Worcester fixed price repair and it's from £298 hopefully that would cover what's wrong.
    Similar new boiler prices £1000 ish plus fitting whatever that cost would be.
    Hmmm decisions decisions.
    Thanks anyway
     
  11. john306

    john306

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    Just been on to WB to check whats included in their fixed price repair, but they have recently stopped doing it due to backlog with covid.

    Anyone got a rough price for the cost of diverter valve replacement please?

    Priced up a new boiler on Boxt but because she lives in a bungalow and flue exits sloping roof it's getting on for £2400 which she cant afford.
     
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