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Worcester Bosch Greenstar 25si

Discussion in 'Plumbing and Central Heating' started by toroidial, 23 Apr 2014.

  1. toroidial

    toroidial

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    Mine was fitted in 2011 and now it has developed a fault whereby the heating comes on and off on its own accord, even when the heating switch is turned to the off position?
    Has anyone got any ideas as to what/where the fault might be?
    Are there stock faults on the circuit board that could be the problem
     
  2. bellairaphon

    bellairaphon

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    External controls? Divertor paddle possibly stuck!

    Nath
     
  3. toroidial

    toroidial

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    Thanks for that Nath.
    Are these common faults on this or any other make of boiler?
     
  4. Gasguru

    Gasguru

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    The MT10 mechanical timeclocks are total rubbish...common fault is the heating staying on.
     
  5. toroidial

    toroidial

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    Thanks for that gasguru.
    The fault does seem to be intermittent though?
     
  6. ALCPlumbing

    ALCPlumbing

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    Definitely the time clock. They are ****e.
     
  7. gaspro1981

    gaspro1981

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    Preheat activated with a sticky or faffed diverter
     
  8. DIYnot Local

    DIYnot Local

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