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  1. J

    Worcester 28CDi Water cycling hot/cold. Water leak from AAV

    I have a Worcester Bosch 28CDi combi that seems to have developed a fault. With the hot tap running (and the central heating off) the boiler will provide hot water for around 30 seconds, after which the pressure gauge needle will wobble around slightly for around 10-20 seconds, at which point...
  2. J

    Help needed with Bus door control circuit.

    I am rebuilding the passenger door mechanism on a Mercedes 609D bus. I have rebuilt the door rams and motor, which work fine. If directly hook up the 24v motor then it turns one way and the doors open. If I then switch the polarity, then the motor turns the other way and the doors close...
  3. J

    Worcester 28CDi Hot Water works, but Central Heating doesn't

    Hello one and all. My first post.... and no surprise I'm looking for some help. I've got a Worcester 28CDi RSF Combi Boiler It provides hot water without a problem. However Central Heating isn't working. When I switch the CH on, the fan clicks on and spins up and then immediately clicks...
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