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  1. M

    Worcester Bosch 24CDi mains water supply

    Sorry for the late response. Thank you Ian.
  2. M

    Worcester Bosch 24CDi mains water supply

    i need to turn off the mains water supply to a Worcester Bosch 24CDi boiler while I work on the mains pipework. When I turn the supply back on, will the boiler air-vent automatically vent any trapped air. Will I need to open the air-vent manually. Thank you
  3. M

    Central heating shuts down unexpectedly

    Hi Armo74. The actuator moves OK when the power is switched on and off. I have removed the actuator and the spindle is free. As it only happens occasionally I suspect that the ball is not seating properly, that's why I will be fitting a replacement. Ive worked on that valve before in the past...
  4. M

    Central heating shuts down unexpectedly

    Hi narkeybee thanks for your response. Mine is a 'Y' plan system with:- Glow worm Micron Boiler 50FF Honeywell T6060 room thermostat Danfoss 4033 time programmer Honeywell 4073a distribution valve I am having the occasional problem with the 4073a valve which keeps the radiators hot all the...
  5. M

    Central heating shuts down unexpectedly

    Over the past two weeks my central heating has developed an intermittent fault. For no apparent reason the heating cycle stops even though all the requirements to provide heat are satisfied i.e. power from room thermostat OK, timer in it’s timed ON cycle and all terminals from the timer...
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