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Worchester Bosch Highflow Greenstar 440

Discussion in 'Plumbing and Central Heating' started by postle, 8 Oct 2011.

  1. postle

    postle

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    HELP! is there something I can do to get my central heating working properly without calling an engineer out ... The water is heating up but the central heating will only come on if I press the button on the far left, which looks like a test setting. Then it fires up, but goes off after a while. I have the manual override setting on and have never used the wireless thermostat and that doesn't even turn on now ( yes I checked the batteries ) But it has never worked, so I don't think its that. The setting on the front is lit up in the 'on' position btw.

    Any ideas?
     
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  3. petit_pablo

    petit_pablo

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    Sounds like a control issue rather than the boiler.

    What controls do you have for the heating.
     
  4. picasso

    picasso

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    What make/model of wireless room stat do you have and why do you think its never worked ?
     
  5. postle

    postle

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    The controller is a Drayton Digistat Rf1 Wireless system. But we have the part that is connected into the boiler on manual over ride, so I guess that should do the trick .... however I agree the problem must lie with the fact the controller is not doing the job properly
     
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  7. postle

    postle

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    I say it's never worked because the display does not have anything on it. It all seems a bit pointless since we have TRV on every rad in every room and the timer on the 440 has always worked well.
     
  8. simond

    simond

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    The radio receiver is probably knackered.

    Turn all the electrics off, then remove the radio receiver front. There will be LN1234 terminals.

    Then join terms 1 and 3 on the terminal back plate using a piece of wire, replace the front and turn on.

    Alternatively, take the wire from '3' and put it in '1' (there will be something in 1 already, leave it there).

    The heating will now work; then go and buy a new radio stat.
     
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  9. muggles

    muggles

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    Re-check the batteries, both for being new and also for being installed correctly, it's not too hard to get that bit wrong believe me!!
     
  10. postle

    postle

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    Batteries are good. I have not only checked them on a battery charger, put new ones in and double checked that I have put them in correctly. common sense tells me the problem is located before that ... As I said before, that part of it has always been dodgy. I have always used the manual override at the transmitter end. What I need is to over ride the transmitter entirely!
     
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